From 1e2de6a82fa22d6e7391a1109dc1ebdbc11e7c03 Mon Sep 17 00:00:00 2001
From: Muaz Khan <muazkh@gmail.com>
Date: Sun, 13 Jan 2019 18:07:13 +0500
Subject: [PATCH] WebAssemblyRecorder is included by default in
 RecordRTC-v5.5.2

---
 Gruntfile.js                          |   16 +-
 README.md                             |   10 +-
 RecordRTC.js                          |  209 ++-
 RecordRTC.min.js                      |    7 +-
 dev/WebAssemblyRecorder.js            |  142 +-
 dev/WebAssemblyRecorder.old.js        |  192 +++
 index.html                            |    3 +-
 package-lock.json                     | 2115 +++++++++++++++++++++++++
 package.json                          |    9 +-
 simple-demos/WebAssemblyRecorder.html |    4 +-
 10 files changed, 2627 insertions(+), 80 deletions(-)
 create mode 100644 dev/WebAssemblyRecorder.old.js
 create mode 100644 package-lock.json

diff --git a/Gruntfile.js b/Gruntfile.js
index 92e5c2a3..59ef00e9 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -53,7 +53,7 @@ module.exports = function(grunt) {
                     'dev/MultiStreamsMixer.js', // github/muaz-khan/MultiStreamsMixer
                     'dev/MultiStreamRecorder.js',
                     'dev/RecordRTC.promises.js',
-                    // 'dev/WebAssemblyRecorder.js' // grunt-contrib-uglify fails; maybe we should use uglify-es instead?
+                    'dev/WebAssemblyRecorder.js' // grunt-contrib-uglify fails; maybe we should use uglify-es instead?
                 ],
                 dest: './temp/RecordRTC.js',
             },
@@ -116,7 +116,9 @@ module.exports = function(grunt) {
                     JSON: true,
                     typeof: true,
                     define: true,
-                    EBML: true
+                    EBML: true,
+                    ReadableStream: true,
+                    WritableStream: true
                 },
                 browser: true,
                 browserify: true,
@@ -214,6 +216,15 @@ module.exports = function(grunt) {
                 pushTo: 'upstream',
                 gitDescribeOptions: '--tags --always --abbrev=1 --dirty=-d'
             }
+        },
+        watch: {
+            scripts: {
+                files: ['dev/*.js'],
+                tasks: ['concat', 'replace', 'jsbeautifier', 'jshint', 'copy', 'uglify', 'clean'],
+                options: {
+                    spawn: false,
+                },
+            }
         }
     });
 
@@ -222,4 +233,5 @@ module.exports = function(grunt) {
     // set default tasks to run when grunt is called without parameters
     // http://gruntjs.com/api/grunt.task
     grunt.registerTask('default', ['concat', 'replace', 'jsbeautifier', 'jshint', 'copy', 'uglify', 'clean']);
+    grunt.loadNpmTasks('grunt-contrib-watch');
 };
diff --git a/README.md b/README.md
index c7be6d74..d0c1833f 100644
--- a/README.md
+++ b/README.md
@@ -238,8 +238,8 @@ Otherwise check cdnjs below.
 You can even link specific [releases](https://github.com/muaz-khan/RecordRTC/releases):
 
 ```html
-<!-- use 5.5.1 or any other version on cdnjs -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/RecordRTC/5.5.1/RecordRTC.js"></script>
+<!-- use 5.5.2 or any other version on cdnjs -->
+<script src="https://cdnjs.cloudflare.com/ajax/libs/RecordRTC/5.5.2/RecordRTC.js"></script>
 ```
 
 Note: You can use `RecordRTC.min.js` as well. (on webrtc-experiment or cdnjs)
@@ -1193,11 +1193,13 @@ recorder.startRecording().then(function() {
 });
 
 recorder.stopRecording().then(function(url) {
-    var blob = recorder.blob;
+    recorder.getBlob().then(function(blob) {
+        //
+    }).catch(function(error) {});
 
     recorder.getDataURL().then(function(dataURL) {
         //
-    }).catch(function(error) {})
+    }).catch(function(error) {});
 }).catch(function(error) {
     //
 });
diff --git a/RecordRTC.js b/RecordRTC.js
index aade0e8a..dbc8435f 100644
--- a/RecordRTC.js
+++ b/RecordRTC.js
@@ -1,6 +1,6 @@
 'use strict';
 
-// Last time updated: 2019-01-13 11:46:56 AM UTC
+// Last time updated: 2019-01-13 12:45:07 PM UTC
 
 // ________________
 // RecordRTC v5.5.2
@@ -5611,3 +5611,210 @@ function RecordRTCPromisesHandler(mediaStream, options) {
 if (typeof RecordRTC !== 'undefined') {
     RecordRTC.RecordRTCPromisesHandler = RecordRTCPromisesHandler;
 }
+
+// All Copyrights goes to: Google Inc.
+// Original: https://github.com/GoogleChromeLabs/webm-wasm
+
+// ______________________
+// WebAssemblyRecorder.js
+
+/**
+ * WebAssemblyRecorder lets you create webm videos in JavaScript via WebAssembly. The library consumes raw RGBA32 buffers (4 bytes per pixel) and turns them into a webm video with the given framerate and quality. This makes it compatible out-of-the-box with ImageData from a CANVAS. With realtime mode you can also use webm-wasm for streaming webm videos.
+ * @summary Video recording feature in Chrome, Firefox and maybe Edge.
+ * @license {@link https://github.com/muaz-khan/RecordRTC#license|MIT}
+ * @author {@link http://www.MuazKhan.com|Muaz Khan}
+ * @typedef WebAssemblyRecorder
+ * @class
+ * @example
+ * var recorder = new WebAssemblyRecorder(mediaStream);
+ * recorder.record();
+ * recorder.stop(function(blob) {
+ *     video.src = URL.createObjectURL(blob);
+ * });
+ * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
+ * @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.
+ * @param {object} config - {webAssemblyPath:'webm-wasm.wasm',workerPath: 'webm-worker.js', frameRate: 30, width: 1920, height: 1080}
+ */
+function WebAssemblyRecorder(stream, config) {
+    if (typeof ReadableStream === 'undefined' || typeof WritableStream === 'undefined') {
+        // because it fixes readable/writable streams issues
+        console.error('Following polyfill is strongly recommended: https://unpkg.com/@mattiasbuelens/web-streams-polyfill/dist/polyfill.min.js');
+    }
+
+    config = config || {};
+
+    config.width = config.width || 640;
+    config.height = config.height || 480;
+    config.frameRate = config.frameRate || 30;
+    config.bitrate = config.bitrate || 1200;
+
+    function createBufferURL(buffer, type) {
+        return URL.createObjectURL(new Blob([buffer], {
+            type: type || ''
+        }));
+    }
+
+    function cameraStream() {
+        return new ReadableStream({
+            start: function(controller) {
+                var cvs = document.createElement('canvas');
+                var video = document.createElement('video');
+                video.srcObject = stream;
+                video.onplaying = function() {
+                    cvs.width = config.width;
+                    cvs.height = config.height;
+                    var ctx = cvs.getContext('2d');
+                    var frameTimeout = 1000 / config.frameRate;
+                    setTimeout(function f() {
+                        ctx.drawImage(video, 0, 0);
+                        controller.enqueue(
+                            ctx.getImageData(0, 0, config.width, config.height)
+                        );
+                        setTimeout(f, frameTimeout);
+                    }, frameTimeout);
+                };
+                video.play();
+            }
+        });
+    }
+
+    var worker;
+
+    function startRecording(stream, buffer) {
+        if (!config.workerPath && !buffer) {
+            // is it safe to use @latest ?
+            fetch(
+                'https://unpkg.com/webm-wasm@latest/dist/webm-worker.js'
+            ).then(function(r) {
+                r.arrayBuffer().then(function(buffer) {
+                    startRecording(stream, buffer);
+                });
+            });
+            return;
+        }
+
+        if (!config.workerPath && buffer instanceof ArrayBuffer) {
+            var blob = new Blob([buffer], {
+                type: 'text/javascript'
+            });
+            config.workerPath = URL.createObjectURL(blob);
+        }
+
+        if (!config.workerPath) {
+            console.error('workerPath parameter is missing.');
+        }
+
+        worker = new Worker(config.workerPath);
+
+        worker.postMessage(config.webAssemblyPath || 'https://unpkg.com/webm-wasm@latest/dist/webm-wasm.wasm');
+        worker.addEventListener('message', function(event) {
+            if (event.data === 'READY') {
+                worker.postMessage({
+                    width: config.width,
+                    height: config.height,
+                    bitrate: config.bitrate || 1200,
+                    timebaseDen: config.frameRate || 30,
+                    realtime: true
+                });
+
+                cameraStream().pipeTo(new WritableStream({
+                    write: function(image) {
+                        if (!worker) {
+                            return;
+                        }
+
+                        worker.postMessage(image.data.buffer, [image.data.buffer]);
+                    }
+                }));
+            } else if (!!event.data) {
+                if (!isPaused) {
+                    arrayOfBuffers.push(event.data);
+                }
+            }
+        });
+    }
+
+    /**
+     * This method records video.
+     * @method
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.record();
+     */
+    this.record = function() {
+        arrayOfBuffers = [];
+        isPaused = false;
+        this.blob = null;
+        startRecording(stream);
+    };
+
+    var isPaused;
+
+    /**
+     * This method pauses the recording process.
+     * @method
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.pause();
+     */
+    this.pause = function() {
+        isPaused = true;
+    };
+
+    /**
+     * This method resumes the recording process.
+     * @method
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.resume();
+     */
+    this.resume = function() {
+        isPaused = false;
+    };
+
+    function terminate() {
+        if (!worker) {
+            return;
+        }
+
+        worker.postMessage(null);
+        worker.terminate();
+        worker = null;
+    }
+
+    var arrayOfBuffers = [];
+
+    /**
+     * This method stops recording video.
+     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
+     * @method
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.stop(function(blob) {
+     *     video.src = URL.createObjectURL(blob);
+     * });
+     */
+    this.stop = function(callback) {
+        terminate();
+
+        this.blob = new Blob(arrayOfBuffers, {
+            type: 'video/webm'
+        });
+
+        callback(this.blob);
+    };
+
+    /**
+     * @property {Blob} blob - The recorded blob object.
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.stop(function(){
+     *     var blob = recorder.blob;
+     * });
+     */
+    this.blob = null;
+}
+
+if (typeof RecordRTC !== 'undefined') {
+    RecordRTC.WebAssemblyRecorder = WebAssemblyRecorder;
+}
diff --git a/RecordRTC.min.js b/RecordRTC.min.js
index bfe12cc9..35cc926c 100644
--- a/RecordRTC.min.js
+++ b/RecordRTC.min.js
@@ -1,6 +1,6 @@
 'use strict';
 
-// Last time updated: 2019-01-13 11:46:56 AM UTC
+// Last time updated: 2019-01-13 12:45:08 PM UTC
 
 // ________________
 // RecordRTC v5.5.2
@@ -12,5 +12,6 @@
 // MIT License   - www.WebRTC-Experiment.com/licence
 // --------------------------------------------------
 
-
-"use strict";function RecordRTC(mediaStream,config){if(!mediaStream)throw"First parameter is required.";config=new RecordRTCConfiguration(mediaStream,config=config||{type:"video"});var self=this;function initRecorder(initCallback){initCallback&&(config.initCallback=function(){initCallback(),initCallback=config.initCallback=null});var Recorder=new GetRecorderType(mediaStream,config);(mediaRecorder=new Recorder(mediaStream,config)).record(),setState("recording"),config.disableLogs||console.log("Initialized recorderType:",mediaRecorder.constructor.name,"for output-type:",config.type)}function stopRecording(callback){if(callback=callback||function(){},mediaRecorder){if("paused"===self.state)return self.resumeRecording(),void setTimeout(function(){stopRecording(callback)},1);"recording"===self.state||config.disableLogs||console.warn('Recording state should be: "recording", however current state is: ',self.state),config.disableLogs||console.log("Stopped recording "+config.type+" stream."),"gif"!==config.type?mediaRecorder.stop(_callback):(mediaRecorder.stop(),_callback()),setState("stopped")}else warningLog();function _callback(__blob){if(mediaRecorder){Object.keys(mediaRecorder).forEach(function(key){"function"!=typeof mediaRecorder[key]&&(self[key]=mediaRecorder[key])});var blob=mediaRecorder.blob;if(!blob){if(!__blob)throw"Recording failed.";mediaRecorder.blob=blob=__blob}if(blob&&!config.disableLogs&&console.log(blob.type,"->",bytesToSize(blob.size)),callback){var url;try{url=URL.createObjectURL(blob)}catch(e){}"function"==typeof callback.call?callback.call(self,url):callback(url)}config.autoWriteToDisk&&getDataURL(function(dataURL){var parameter={};parameter[config.type+"Blob"]=dataURL,DiskStorage.Store(parameter)})}else"function"==typeof callback.call?callback.call(self,""):callback("")}}function readFile(_blob){postMessage((new FileReaderSync).readAsDataURL(_blob))}function getDataURL(callback,_mediaRecorder){if(!callback)throw"Pass a callback function over getDataURL.";var blob=_mediaRecorder?_mediaRecorder.blob:(mediaRecorder||{}).blob;if(!blob)return config.disableLogs||console.warn("Blob encoder did not finish its job yet."),void setTimeout(function(){getDataURL(callback,_mediaRecorder)},1e3);if("undefined"==typeof Worker||navigator.mozGetUserMedia){var reader=new FileReader;reader.readAsDataURL(blob),reader.onload=function(event){callback(event.target.result)}}else{var webWorker=function(_function){try{var blob=URL.createObjectURL(new Blob([_function.toString(),"this.onmessage =  function (eee) {"+_function.name+"(eee.data);}"],{type:"application/javascript"})),worker=new Worker(blob);return URL.revokeObjectURL(blob),worker}catch(e){}}(readFile);webWorker.onmessage=function(event){callback(event.data)},webWorker.postMessage(blob)}}function handleRecordingDuration(counter){counter=counter||0,"paused"!==self.state?"stopped"!==self.state&&(counter>=self.recordingDuration?stopRecording(self.onRecordingStopped):(counter+=1e3,setTimeout(function(){handleRecordingDuration(counter)},1e3))):setTimeout(function(){handleRecordingDuration(counter)},1e3)}function setState(state){self&&(self.state=state,"function"==typeof self.onStateChanged.call?self.onStateChanged.call(self,state):self.onStateChanged(state))}var mediaRecorder,WARNING='It seems that recorder is destroyed or "startRecording" is not invoked for '+config.type+" recorder.";function warningLog(){!0!==config.disableLogs&&console.warn(WARNING)}var returnObject={startRecording:function(config2){return config2&&(config=new RecordRTCConfiguration(mediaStream,config2)),config.disableLogs||console.log("started recording "+config.type+" stream."),mediaRecorder?(mediaRecorder.clearRecordedData(),mediaRecorder.record(),setState("recording"),self.recordingDuration&&handleRecordingDuration()):initRecorder(function(){self.recordingDuration&&handleRecordingDuration()}),self},stopRecording:stopRecording,pauseRecording:function(){mediaRecorder?"recording"===self.state?(setState("paused"),mediaRecorder.pause(),config.disableLogs||console.log("Paused recording.")):config.disableLogs||console.warn("Unable to pause the recording. Recording state: ",self.state):warningLog()},resumeRecording:function(){mediaRecorder?"paused"===self.state?(setState("recording"),mediaRecorder.resume(),config.disableLogs||console.log("Resumed recording.")):config.disableLogs||console.warn("Unable to resume the recording. Recording state: ",self.state):warningLog()},initRecorder:initRecorder,setRecordingDuration:function(recordingDuration,callback){if(void 0===recordingDuration)throw"recordingDuration is required.";if("number"!=typeof recordingDuration)throw"recordingDuration must be a number.";return self.recordingDuration=recordingDuration,self.onRecordingStopped=callback||function(){},{onRecordingStopped:function(callback){self.onRecordingStopped=callback}}},clearRecordedData:function(){mediaRecorder?(mediaRecorder.clearRecordedData(),config.disableLogs||console.log("Cleared old recorded data.")):warningLog()},getBlob:function(){if(mediaRecorder)return mediaRecorder.blob;warningLog()},getDataURL:getDataURL,toURL:function(){if(mediaRecorder)return URL.createObjectURL(mediaRecorder.blob);warningLog()},getInternalRecorder:function(){return mediaRecorder},save:function(fileName){mediaRecorder?invokeSaveAsDialog(mediaRecorder.blob,fileName):warningLog()},getFromDisk:function(callback){mediaRecorder?RecordRTC.getFromDisk(config.type,callback):warningLog()},setAdvertisementArray:function(arrayOfWebPImages){config.advertisement=[];for(var length=arrayOfWebPImages.length,i=0;i<length;i++)config.advertisement.push({duration:i,image:arrayOfWebPImages[i]})},blob:null,bufferSize:0,sampleRate:0,buffer:null,reset:function(){mediaRecorder&&"function"==typeof mediaRecorder.clearRecordedData&&mediaRecorder.clearRecordedData(),mediaRecorder=null,setState("inactive"),self.blob=null},onStateChanged:function(state){config.disableLogs||console.log("Recorder state changed:",state)},state:"inactive",getState:function(){return self.state},destroy:function(){var disableLogsCache=config.disableLogs;config={disableLogs:!0},self.reset(),setState("destroyed"),returnObject=self=null,Storage.AudioContextConstructor&&(Storage.AudioContextConstructor.close(),Storage.AudioContextConstructor=null),config.disableLogs=disableLogsCache,config.disableLogs||console.warn("RecordRTC is destroyed.")},version:"5.5.2"};if(!this)return self=returnObject;for(var prop in returnObject)this[prop]=returnObject[prop];return self=this,returnObject}function RecordRTCConfiguration(mediaStream,config){return config.recorderType||config.type||(config.audio&&config.video?config.type="video":config.audio&&!config.video&&(config.type="audio")),config.recorderType&&!config.type&&(config.recorderType===WhammyRecorder||config.recorderType===CanvasRecorder||"undefined"!=typeof WebAssemblyRecorder&&config.recorderType===WebAssemblyRecorder?config.type="video":config.recorderType===GifRecorder?config.type="gif":config.recorderType===StereoAudioRecorder?config.type="audio":config.recorderType===MediaStreamRecorder&&(getTracks(mediaStream,"audio").length&&getTracks(mediaStream,"video").length?config.type="video":!getTracks(mediaStream,"audio").length&&getTracks(mediaStream,"video").length?config.type="video":getTracks(mediaStream,"audio").length&&!getTracks(mediaStream,"video").length&&(config.type="audio"))),void 0!==MediaStreamRecorder&&"undefined"!=typeof MediaRecorder&&"requestData"in MediaRecorder.prototype&&(config.mimeType||(config.mimeType="video/webm"),config.type||(config.type=config.mimeType.split("/")[0]),config.bitsPerSecond),config.type||(config.mimeType&&(config.type=config.mimeType.split("/")[0]),config.type||(config.type="audio")),config}function GetRecorderType(mediaStream,config){var recorder;return(isChrome||isEdge||isOpera)&&(recorder=StereoAudioRecorder),"undefined"!=typeof MediaRecorder&&"requestData"in MediaRecorder.prototype&&!isChrome&&(recorder=MediaStreamRecorder),"video"===config.type&&(isChrome||isOpera)&&(recorder=WhammyRecorder,"undefined"!=typeof WebAssemblyRecorder&&"undefined"!=typeof ReadableStream&&(recorder=WebAssemblyRecorder)),"gif"===config.type&&(recorder=GifRecorder),"canvas"===config.type&&(recorder=CanvasRecorder),isMediaRecorderCompatible()&&recorder!==CanvasRecorder&&recorder!==GifRecorder&&"undefined"!=typeof MediaRecorder&&"requestData"in MediaRecorder.prototype&&(getTracks(mediaStream,"video").length||getTracks(mediaStream,"audio").length)&&("audio"===config.type?"function"==typeof MediaRecorder.isTypeSupported&&MediaRecorder.isTypeSupported("audio/webm")&&(recorder=MediaStreamRecorder):"function"==typeof MediaRecorder.isTypeSupported&&MediaRecorder.isTypeSupported("video/webm")&&(recorder=MediaStreamRecorder)),mediaStream instanceof Array&&mediaStream.length&&(recorder=MultiStreamRecorder),config.recorderType&&(recorder=config.recorderType),!config.disableLogs&&recorder&&recorder.name&&console.log("Using recorderType:",recorder.name||recorder.constructor.name),!recorder&&isSafari&&(recorder=MediaStreamRecorder),recorder}function MRecordRTC(mediaStream){this.addStream=function(_mediaStream){_mediaStream&&(mediaStream=_mediaStream)},this.mediaType={audio:!0,video:!0},this.startRecording=function(){var recorderType,mediaType=this.mediaType,mimeType=this.mimeType||{audio:null,video:null,gif:null};if("function"!=typeof mediaType.audio&&isMediaRecorderCompatible()&&!getTracks(mediaStream,"audio").length&&(mediaType.audio=!1),"function"!=typeof mediaType.video&&isMediaRecorderCompatible()&&!getTracks(mediaStream,"video").length&&(mediaType.video=!1),"function"!=typeof mediaType.gif&&isMediaRecorderCompatible()&&!getTracks(mediaStream,"video").length&&(mediaType.gif=!1),!mediaType.audio&&!mediaType.video&&!mediaType.gif)throw"MediaStream must have either audio or video tracks.";if(mediaType.audio&&(recorderType=null,"function"==typeof mediaType.audio&&(recorderType=mediaType.audio),this.audioRecorder=new RecordRTC(mediaStream,{type:"audio",bufferSize:this.bufferSize,sampleRate:this.sampleRate,numberOfAudioChannels:this.numberOfAudioChannels||2,disableLogs:this.disableLogs,recorderType:recorderType,mimeType:mimeType.audio,timeSlice:this.timeSlice,onTimeStamp:this.onTimeStamp}),mediaType.video||this.audioRecorder.startRecording()),mediaType.video){recorderType=null,"function"==typeof mediaType.video&&(recorderType=mediaType.video);var newStream=mediaStream;if(isMediaRecorderCompatible()&&mediaType.audio&&"function"==typeof mediaType.audio){var videoTrack=getTracks(mediaStream,"video")[0];navigator.mozGetUserMedia?((newStream=new MediaStream).addTrack(videoTrack),recorderType&&recorderType===WhammyRecorder&&(recorderType=MediaStreamRecorder)):newStream=new MediaStream([videoTrack])}this.videoRecorder=new RecordRTC(newStream,{type:"video",video:this.video,canvas:this.canvas,frameInterval:this.frameInterval||10,disableLogs:this.disableLogs,recorderType:recorderType,mimeType:mimeType.video,timeSlice:this.timeSlice,onTimeStamp:this.onTimeStamp}),mediaType.audio||this.videoRecorder.startRecording()}if(mediaType.audio&&mediaType.video){var self=this;isMediaRecorderCompatible()?(self.audioRecorder=null,self.videoRecorder.startRecording()):self.videoRecorder.initRecorder(function(){self.audioRecorder.initRecorder(function(){self.videoRecorder.startRecording(),self.audioRecorder.startRecording()})})}mediaType.gif&&(recorderType=null,"function"==typeof mediaType.gif&&(recorderType=mediaType.gif),this.gifRecorder=new RecordRTC(mediaStream,{type:"gif",frameRate:this.frameRate||200,quality:this.quality||10,disableLogs:this.disableLogs,recorderType:recorderType,mimeType:mimeType.gif}),this.gifRecorder.startRecording())},this.stopRecording=function(callback){callback=callback||function(){},this.audioRecorder&&this.audioRecorder.stopRecording(function(blobURL){callback(blobURL,"audio")}),this.videoRecorder&&this.videoRecorder.stopRecording(function(blobURL){callback(blobURL,"video")}),this.gifRecorder&&this.gifRecorder.stopRecording(function(blobURL){callback(blobURL,"gif")})},this.pauseRecording=function(){this.audioRecorder&&this.audioRecorder.pauseRecording(),this.videoRecorder&&this.videoRecorder.pauseRecording(),this.gifRecorder&&this.gifRecorder.pauseRecording()},this.resumeRecording=function(){this.audioRecorder&&this.audioRecorder.resumeRecording(),this.videoRecorder&&this.videoRecorder.resumeRecording(),this.gifRecorder&&this.gifRecorder.resumeRecording()},this.getBlob=function(callback){var output={};return this.audioRecorder&&(output.audio=this.audioRecorder.getBlob()),this.videoRecorder&&(output.video=this.videoRecorder.getBlob()),this.gifRecorder&&(output.gif=this.gifRecorder.getBlob()),callback&&callback(output),output},this.destroy=function(){this.audioRecorder&&(this.audioRecorder.destroy(),this.audioRecorder=null),this.videoRecorder&&(this.videoRecorder.destroy(),this.videoRecorder=null),this.gifRecorder&&(this.gifRecorder.destroy(),this.gifRecorder=null)},this.getDataURL=function(callback){function getDataURL(blob,callback00){if("undefined"!=typeof Worker){var webWorker=function(_function){var url,blob=URL.createObjectURL(new Blob([_function.toString(),"this.onmessage =  function (eee) {"+_function.name+"(eee.data);}"],{type:"application/javascript"})),worker=new Worker(blob);if(void 0!==URL)url=URL;else{if("undefined"==typeof webkitURL)throw"Neither URL nor webkitURL detected.";url=webkitURL}return url.revokeObjectURL(blob),worker}(function(_blob){postMessage((new FileReaderSync).readAsDataURL(_blob))});webWorker.onmessage=function(event){callback00(event.data)},webWorker.postMessage(blob)}else{var reader=new FileReader;reader.readAsDataURL(blob),reader.onload=function(event){callback00(event.target.result)}}}this.getBlob(function(blob){blob.audio&&blob.video?getDataURL(blob.audio,function(_audioDataURL){getDataURL(blob.video,function(_videoDataURL){callback({audio:_audioDataURL,video:_videoDataURL})})}):blob.audio?getDataURL(blob.audio,function(_audioDataURL){callback({audio:_audioDataURL})}):blob.video&&getDataURL(blob.video,function(_videoDataURL){callback({video:_videoDataURL})})})},this.writeToDisk=function(){RecordRTC.writeToDisk({audio:this.audioRecorder,video:this.videoRecorder,gif:this.gifRecorder})},this.save=function(args){(args=args||{audio:!0,video:!0,gif:!0}).audio&&this.audioRecorder&&this.audioRecorder.save("string"==typeof args.audio?args.audio:""),args.video&&this.videoRecorder&&this.videoRecorder.save("string"==typeof args.video?args.video:""),args.gif&&this.gifRecorder&&this.gifRecorder.save("string"==typeof args.gif?args.gif:"")}}RecordRTC.version="5.5.2","undefined"!=typeof module&&(module.exports=RecordRTC),"function"==typeof define&&define.amd&&define("RecordRTC",[],function(){return RecordRTC}),RecordRTC.getFromDisk=function(type,callback){if(!callback)throw"callback is mandatory.";console.log("Getting recorded "+("all"===type?"blobs":type+" blob ")+" from disk!"),DiskStorage.Fetch(function(dataURL,_type){"all"!==type&&_type===type+"Blob"&&callback&&callback(dataURL),"all"===type&&callback&&callback(dataURL,_type.replace("Blob",""))})},RecordRTC.writeToDisk=function(options){console.log("Writing recorded blob(s) to disk!"),(options=options||{}).audio&&options.video&&options.gif?options.audio.getDataURL(function(audioDataURL){options.video.getDataURL(function(videoDataURL){options.gif.getDataURL(function(gifDataURL){DiskStorage.Store({audioBlob:audioDataURL,videoBlob:videoDataURL,gifBlob:gifDataURL})})})}):options.audio&&options.video?options.audio.getDataURL(function(audioDataURL){options.video.getDataURL(function(videoDataURL){DiskStorage.Store({audioBlob:audioDataURL,videoBlob:videoDataURL})})}):options.audio&&options.gif?options.audio.getDataURL(function(audioDataURL){options.gif.getDataURL(function(gifDataURL){DiskStorage.Store({audioBlob:audioDataURL,gifBlob:gifDataURL})})}):options.video&&options.gif?options.video.getDataURL(function(videoDataURL){options.gif.getDataURL(function(gifDataURL){DiskStorage.Store({videoBlob:videoDataURL,gifBlob:gifDataURL})})}):options.audio?options.audio.getDataURL(function(audioDataURL){DiskStorage.Store({audioBlob:audioDataURL})}):options.video?options.video.getDataURL(function(videoDataURL){DiskStorage.Store({videoBlob:videoDataURL})}):options.gif&&options.gif.getDataURL(function(gifDataURL){DiskStorage.Store({gifBlob:gifDataURL})})},MRecordRTC.getFromDisk=RecordRTC.getFromDisk,MRecordRTC.writeToDisk=RecordRTC.writeToDisk,void 0!==RecordRTC&&(RecordRTC.MRecordRTC=MRecordRTC);var browserFakeUserAgent="Fake/5.0 (FakeOS) AppleWebKit/123 (KHTML, like Gecko) Fake/12.3.4567.89 Fake/123.45";!function(that){that&&"undefined"==typeof window&&"undefined"!=typeof global&&(global.navigator={userAgent:browserFakeUserAgent,getUserMedia:function(){}},global.console||(global.console={}),void 0!==global.console.log&&void 0!==global.console.error||(global.console.error=global.console.log=global.console.log||function(){console.log(arguments)}),"undefined"==typeof document&&(that.document={},document.createElement=document.captureStream=document.mozCaptureStream=function(){var obj={getContext:function(){return obj},play:function(){},pause:function(){},drawImage:function(){},toDataURL:function(){return""}};return obj},that.HTMLVideoElement=function(){}),"undefined"==typeof location&&(that.location={protocol:"file:",href:"",hash:""}),"undefined"==typeof screen&&(that.screen={width:0,height:0}),void 0===URL&&(that.URL={createObjectURL:function(){return""},revokeObjectURL:function(){return""}}),that.window=global)}("undefined"!=typeof global?global:null);var requestAnimationFrame=window.requestAnimationFrame;if(void 0===requestAnimationFrame)if("undefined"!=typeof webkitRequestAnimationFrame)requestAnimationFrame=webkitRequestAnimationFrame;else if("undefined"!=typeof mozRequestAnimationFrame)requestAnimationFrame=mozRequestAnimationFrame;else if("undefined"!=typeof msRequestAnimationFrame)requestAnimationFrame=msRequestAnimationFrame;else if(void 0===requestAnimationFrame){var lastTime=0;requestAnimationFrame=function(callback,element){var currTime=(new Date).getTime(),timeToCall=Math.max(0,16-(currTime-lastTime)),id=setTimeout(function(){callback(currTime+timeToCall)},timeToCall);return lastTime=currTime+timeToCall,id}}var cancelAnimationFrame=window.cancelAnimationFrame;void 0===cancelAnimationFrame&&("undefined"!=typeof webkitCancelAnimationFrame?cancelAnimationFrame=webkitCancelAnimationFrame:"undefined"!=typeof mozCancelAnimationFrame?cancelAnimationFrame=mozCancelAnimationFrame:"undefined"!=typeof msCancelAnimationFrame?cancelAnimationFrame=msCancelAnimationFrame:void 0===cancelAnimationFrame&&(cancelAnimationFrame=function(id){clearTimeout(id)}));var AudioContext=window.AudioContext;void 0===AudioContext&&("undefined"!=typeof webkitAudioContext&&(AudioContext=webkitAudioContext),"undefined"!=typeof mozAudioContext&&(AudioContext=mozAudioContext));var URL=window.URL;void 0===URL&&"undefined"!=typeof webkitURL&&(URL=webkitURL),"undefined"!=typeof navigator&&void 0===navigator.getUserMedia&&(void 0!==navigator.webkitGetUserMedia&&(navigator.getUserMedia=navigator.webkitGetUserMedia),void 0!==navigator.mozGetUserMedia&&(navigator.getUserMedia=navigator.mozGetUserMedia));var isEdge=!(-1===navigator.userAgent.indexOf("Edge")||!navigator.msSaveBlob&&!navigator.msSaveOrOpenBlob),isOpera=!!window.opera||-1!==navigator.userAgent.indexOf("OPR/"),isFirefox=-1<navigator.userAgent.toLowerCase().indexOf("firefox")&&"netscape"in window&&/ rv:/.test(navigator.userAgent),isChrome=!isOpera&&!isEdge&&!!navigator.webkitGetUserMedia||isElectron()||-1!==navigator.userAgent.toLowerCase().indexOf("chrome/"),isSafari=/^((?!chrome|android).)*safari/i.test(navigator.userAgent);isSafari&&!isChrome&&-1!==navigator.userAgent.indexOf("CriOS")&&(isChrome=!(isSafari=!1));var MediaStream=window.MediaStream;function bytesToSize(bytes){if(0===bytes)return"0 Bytes";var i=parseInt(Math.floor(Math.log(bytes)/Math.log(1e3)),10);return(bytes/Math.pow(1e3,i)).toPrecision(3)+" "+["Bytes","KB","MB","GB","TB"][i]}function invokeSaveAsDialog(file,fileName){if(!file)throw"Blob object is required.";if(!file.type)try{file.type="video/webm"}catch(e){}var fileExtension=(file.type||"video/webm").split("/")[1];if(fileName&&-1!==fileName.indexOf(".")){var splitted=fileName.split(".");fileName=splitted[0],fileExtension=splitted[1]}var fileFullName=(fileName||Math.round(9999999999*Math.random())+888888888)+"."+fileExtension;if(void 0!==navigator.msSaveOrOpenBlob)return navigator.msSaveOrOpenBlob(file,fileFullName);if(void 0!==navigator.msSaveBlob)return navigator.msSaveBlob(file,fileFullName);var hyperlink=document.createElement("a");hyperlink.href=URL.createObjectURL(file),hyperlink.download=fileFullName,hyperlink.style="display:none;opacity:0;color:transparent;",(document.body||document.documentElement).appendChild(hyperlink),"function"==typeof hyperlink.click?hyperlink.click():(hyperlink.target="_blank",hyperlink.dispatchEvent(new MouseEvent("click",{view:window,bubbles:!0,cancelable:!0}))),URL.revokeObjectURL(hyperlink.href)}function isElectron(){return"undefined"!=typeof window&&"object"==typeof window.process&&"renderer"===window.process.type||(!("undefined"==typeof process||"object"!=typeof process.versions||!process.versions.electron)||"object"==typeof navigator&&"string"==typeof navigator.userAgent&&0<=navigator.userAgent.indexOf("Electron"))}function getTracks(stream,kind){return stream&&stream.getTracks?stream.getTracks().filter(function(t){return t.kind===(kind||"audio")}):[]}function setSrcObject(stream,element){"srcObject"in element?element.srcObject=stream:"mozSrcObject"in element?element.mozSrcObject=stream:element.srcObject=stream}function getSeekableBlob(inputBlob,callback){if("undefined"==typeof EBML)throw new Error("Please link: https://cdn.webrtc-experiment.com/EBML.js");var reader=new EBML.Reader,decoder=new EBML.Decoder,tools=EBML.tools,fileReader=new FileReader;fileReader.onload=function(e){decoder.decode(this.result).forEach(function(element){reader.read(element)}),reader.stop();var refinedMetadataBuf=tools.makeMetadataSeekable(reader.metadatas,reader.duration,reader.cues),body=this.result.slice(reader.metadataSize),newBlob=new Blob([refinedMetadataBuf,body],{type:"video/webm"});callback(newBlob)},fileReader.readAsArrayBuffer(inputBlob)}void 0===MediaStream&&"undefined"!=typeof webkitMediaStream&&(MediaStream=webkitMediaStream),void 0!==MediaStream&&void 0===MediaStream.prototype.stop&&(MediaStream.prototype.stop=function(){this.getTracks().forEach(function(track){track.stop()})});var Storage={};function isMediaRecorderCompatible(){if(isFirefox||isSafari||isEdge)return!0;navigator.appVersion;var verOffset,ix,nAgt=navigator.userAgent,fullVersion=""+parseFloat(navigator.appVersion),majorVersion=parseInt(navigator.appVersion,10);return(isChrome||isOpera)&&(verOffset=nAgt.indexOf("Chrome"),fullVersion=nAgt.substring(verOffset+7)),-1!==(ix=fullVersion.indexOf(";"))&&(fullVersion=fullVersion.substring(0,ix)),-1!==(ix=fullVersion.indexOf(" "))&&(fullVersion=fullVersion.substring(0,ix)),majorVersion=parseInt(""+fullVersion,10),isNaN(majorVersion)&&(fullVersion=""+parseFloat(navigator.appVersion),majorVersion=parseInt(navigator.appVersion,10)),49<=majorVersion}function MediaStreamRecorder(mediaStream,config){var self=this;if(void 0===mediaStream)throw'First argument "MediaStream" is required.';if("undefined"==typeof MediaRecorder)throw"Your browser does not supports Media Recorder API. Please try other modules e.g. WhammyRecorder or StereoAudioRecorder.";if("audio"===(config=config||{mimeType:"video/webm"}).type){var stream;if(getTracks(mediaStream,"video").length&&getTracks(mediaStream,"audio").length)navigator.mozGetUserMedia?(stream=new MediaStream).addTrack(getTracks(mediaStream,"audio")[0]):stream=new MediaStream(getTracks(mediaStream,"audio")),mediaStream=stream;config.mimeType&&-1!==config.mimeType.toString().toLowerCase().indexOf("audio")||(config.mimeType=isChrome?"audio/webm":"audio/ogg"),config.mimeType&&"audio/ogg"!==config.mimeType.toString().toLowerCase()&&navigator.mozGetUserMedia&&(config.mimeType="audio/ogg")}var mediaRecorder,arrayOfBlobs=[];function updateTimeStamp(){self.timestamps.push((new Date).getTime()),"function"==typeof config.onTimeStamp&&config.onTimeStamp(self.timestamps[self.timestamps.length-1],self.timestamps)}function getMimeType(secondObject){return mediaRecorder&&mediaRecorder.mimeType?mediaRecorder.mimeType:secondObject.mimeType||"video/webm"}function clearRecordedDataCB(){arrayOfBlobs=[],mediaRecorder=null,self.timestamps=[]}this.getArrayOfBlobs=function(){return arrayOfBlobs},this.record=function(){self.blob=null,self.clearRecordedData(),self.timestamps=[],allStates=[],arrayOfBlobs=[];var recorderHints=config;config.disableLogs||console.log("Passing following config over MediaRecorder API.",recorderHints),mediaRecorder&&(mediaRecorder=null),isChrome&&!isMediaRecorderCompatible()&&(recorderHints="video/vp8"),"function"==typeof MediaRecorder.isTypeSupported&&recorderHints.mimeType&&(MediaRecorder.isTypeSupported(recorderHints.mimeType)||(config.disableLogs||console.warn("MediaRecorder API seems unable to record mimeType:",recorderHints.mimeType),recorderHints.mimeType="audio"===config.type?"audio/webm":"video/webm"));try{mediaRecorder=new MediaRecorder(mediaStream,recorderHints),config.mimeType=recorderHints.mimeType}catch(e){mediaRecorder=new MediaRecorder(mediaStream)}recorderHints.mimeType&&!MediaRecorder.isTypeSupported&&"canRecordMimeType"in mediaRecorder&&!1===mediaRecorder.canRecordMimeType(recorderHints.mimeType)&&(config.disableLogs||console.warn("MediaRecorder API seems unable to record mimeType:",recorderHints.mimeType)),mediaRecorder.ondataavailable=function(e){if(e.data&&allStates.push("ondataavailable: "+bytesToSize(e.data.size)),"number"!=typeof config.timeSlice)!e.data||!e.data.size||e.data.size<100||self.blob?self.recordingCallback&&(self.recordingCallback(new Blob([],{type:getMimeType(recorderHints)})),self.recordingCallback=null):(self.blob=config.getNativeBlob?e.data:new Blob([e.data],{type:getMimeType(recorderHints)}),self.recordingCallback&&(self.recordingCallback(self.blob),self.recordingCallback=null));else if(e.data&&e.data.size&&100<e.data.size&&(arrayOfBlobs.push(e.data),updateTimeStamp(),"function"==typeof config.ondataavailable)){var blob=config.getNativeBlob?e.data:new Blob([e.data],{type:getMimeType(recorderHints)});config.ondataavailable(blob)}},mediaRecorder.onstart=function(){allStates.push("started")},mediaRecorder.onpause=function(){allStates.push("paused")},mediaRecorder.onresume=function(){allStates.push("resumed")},mediaRecorder.onstop=function(){allStates.push("stopped")},mediaRecorder.onerror=function(error){error&&(error.name||(error.name="UnknownError"),allStates.push("error: "+error),config.disableLogs||(-1!==error.name.toString().toLowerCase().indexOf("invalidstate")?console.error("The MediaRecorder is not in a state in which the proposed operation is allowed to be executed.",error):-1!==error.name.toString().toLowerCase().indexOf("notsupported")?console.error("MIME type (",recorderHints.mimeType,") is not supported.",error):-1!==error.name.toString().toLowerCase().indexOf("security")?console.error("MediaRecorder security error",error):"OutOfMemory"===error.name?console.error("The UA has exhaused the available memory. User agents SHOULD provide as much additional information as possible in the message attribute.",error):"IllegalStreamModification"===error.name?console.error("A modification to the stream has occurred that makes it impossible to continue recording. An example would be the addition of a Track while recording is occurring. User agents SHOULD provide as much additional information as possible in the message attribute.",error):"OtherRecordingError"===error.name?console.error("Used for an fatal error other than those listed above. User agents SHOULD provide as much additional information as possible in the message attribute.",error):"GenericError"===error.name?console.error("The UA cannot provide the codec or recording option that has been requested.",error):console.error("MediaRecorder Error",error)),function(looper){if(!self.manuallyStopped&&mediaRecorder&&"inactive"===mediaRecorder.state)return delete config.timeslice,mediaRecorder.start(6e5);setTimeout(void 0,1e3)}(),"inactive"!==mediaRecorder.state&&"stopped"!==mediaRecorder.state&&mediaRecorder.stop())},"number"==typeof config.timeSlice?(updateTimeStamp(),mediaRecorder.start(config.timeSlice)):mediaRecorder.start(36e5),config.initCallback&&config.initCallback()},this.timestamps=[],this.stop=function(callback){callback=callback||function(){},self.manuallyStopped=!0,mediaRecorder&&(this.recordingCallback=callback,"recording"===mediaRecorder.state&&mediaRecorder.stop(),"number"==typeof config.timeSlice&&setTimeout(function(){self.blob=new Blob(arrayOfBlobs,{type:getMimeType(config)}),self.recordingCallback(self.blob)},100))},this.pause=function(){mediaRecorder&&"recording"===mediaRecorder.state&&mediaRecorder.pause()},this.resume=function(){mediaRecorder&&"paused"===mediaRecorder.state&&mediaRecorder.resume()},this.clearRecordedData=function(){mediaRecorder&&"recording"===mediaRecorder.state&&self.stop(clearRecordedDataCB),clearRecordedDataCB()},this.getInternalRecorder=function(){return mediaRecorder},this.blob=null,this.getState=function(){return mediaRecorder&&mediaRecorder.state||"inactive"};var allStates=[];this.getAllStates=function(){return allStates},void 0===config.checkForInactiveTracks&&(config.checkForInactiveTracks=!1);self=this;!function looper(){if(mediaRecorder&&!1!==config.checkForInactiveTracks)return!1===function(){if("active"in mediaStream){if(!mediaStream.active)return!1}else if("ended"in mediaStream&&mediaStream.ended)return!1;return!0}()?(config.disableLogs||console.log("MediaStream seems stopped."),void self.stop()):void setTimeout(looper,1e3)}(),this.name="MediaStreamRecorder",this.toString=function(){return this.name}}function StereoAudioRecorder(mediaStream,config){if(!getTracks(mediaStream,"audio").length)throw"Your stream has no audio tracks.";var jsAudioNode,self=this,leftchannel=[],rightchannel=[],recording=!1,recordingLength=0,numberOfAudioChannels=2,desiredSampRate=(config=config||{}).desiredSampRate;function isMediaStreamActive(){if(!1===config.checkForInactiveTracks)return!0;if("active"in mediaStream){if(!mediaStream.active)return!1}else if("ended"in mediaStream&&mediaStream.ended)return!1;return!0}function mergeLeftRightBuffers(config,callback){function mergeAudioBuffers(config,cb){var interleaved,numberOfAudioChannels=config.numberOfAudioChannels,leftBuffers=config.leftBuffers.slice(0),rightBuffers=config.rightBuffers.slice(0),sampleRate=config.sampleRate,internalInterleavedLength=config.internalInterleavedLength,desiredSampRate=config.desiredSampRate;function interpolateArray(data,newSampleRate,oldSampleRate){var fitCount=Math.round(data.length*(newSampleRate/oldSampleRate)),newData=[],springFactor=Number((data.length-1)/(fitCount-1));newData[0]=data[0];for(var i=1;i<fitCount-1;i++){var tmp=i*springFactor,before=Number(Math.floor(tmp)).toFixed(),after=Number(Math.ceil(tmp)).toFixed(),atPoint=tmp-before;newData[i]=linearInterpolate(data[before],data[after],atPoint)}return newData[fitCount-1]=data[data.length-1],newData}function linearInterpolate(before,after,atPoint){return before+(after-before)*atPoint}function mergeBuffers(channelBuffer,rLength){for(var result=new Float64Array(rLength),offset=0,lng=channelBuffer.length,i=0;i<lng;i++){var buffer=channelBuffer[i];result.set(buffer,offset),offset+=buffer.length}return result}function writeUTFBytes(view,offset,string){for(var lng=string.length,i=0;i<lng;i++)view.setUint8(offset+i,string.charCodeAt(i))}2===numberOfAudioChannels&&(leftBuffers=mergeBuffers(leftBuffers,internalInterleavedLength),rightBuffers=mergeBuffers(rightBuffers,internalInterleavedLength),desiredSampRate&&(leftBuffers=interpolateArray(leftBuffers,desiredSampRate,sampleRate),rightBuffers=interpolateArray(rightBuffers,desiredSampRate,sampleRate))),1===numberOfAudioChannels&&(leftBuffers=mergeBuffers(leftBuffers,internalInterleavedLength),desiredSampRate&&(leftBuffers=interpolateArray(leftBuffers,desiredSampRate,sampleRate))),desiredSampRate&&(sampleRate=desiredSampRate),2===numberOfAudioChannels&&(interleaved=function(leftChannel,rightChannel){for(var length=leftChannel.length+rightChannel.length,result=new Float64Array(length),inputIndex=0,index=0;index<length;)result[index++]=leftChannel[inputIndex],result[index++]=rightChannel[inputIndex],inputIndex++;return result}(leftBuffers,rightBuffers)),1===numberOfAudioChannels&&(interleaved=leftBuffers);var interleavedLength=interleaved.length,buffer=new ArrayBuffer(44+2*interleavedLength),view=new DataView(buffer);writeUTFBytes(view,0,"RIFF"),view.setUint32(4,36+2*interleavedLength,!0),writeUTFBytes(view,8,"WAVE"),writeUTFBytes(view,12,"fmt "),view.setUint32(16,16,!0),view.setUint16(20,1,!0),view.setUint16(22,numberOfAudioChannels,!0),view.setUint32(24,sampleRate,!0),view.setUint32(28,2*sampleRate,!0),view.setUint16(32,2*numberOfAudioChannels,!0),view.setUint16(34,16,!0),writeUTFBytes(view,36,"data"),view.setUint32(40,2*interleavedLength,!0);for(var lng=interleavedLength,index=44,i=0;i<lng;i++)view.setInt16(index,32767*interleaved[i],!0),index+=2;if(cb)return cb({buffer:buffer,view:view});postMessage({buffer:buffer,view:view})}if(config.noWorker)mergeAudioBuffers(config,function(data){callback(data.buffer,data.view)});else{var _function,workerURL,worker,webWorker=(_function=mergeAudioBuffers,workerURL=URL.createObjectURL(new Blob([_function.toString(),";this.onmessage =  function (eee) {"+_function.name+"(eee.data);}"],{type:"application/javascript"})),(worker=new Worker(workerURL)).workerURL=workerURL,worker);webWorker.onmessage=function(event){callback(event.data.buffer,event.data.view),URL.revokeObjectURL(webWorker.workerURL),webWorker.terminate()},webWorker.postMessage(config)}}if(!0===config.leftChannel&&(numberOfAudioChannels=1),1===config.numberOfAudioChannels&&(numberOfAudioChannels=1),(!numberOfAudioChannels||numberOfAudioChannels<1)&&(numberOfAudioChannels=2),config.disableLogs||console.log("StereoAudioRecorder is set to record number of channels: "+numberOfAudioChannels),void 0===config.checkForInactiveTracks&&(config.checkForInactiveTracks=!0),this.record=function(){if(!1===isMediaStreamActive())throw"Please make sure MediaStream is active.";resetVariables(),isAudioProcessStarted=isPaused=!1,recording=!0,void 0!==config.timeSlice&&looper()},this.stop=function(callback){callback=callback||function(){},recording=!1,mergeLeftRightBuffers({desiredSampRate:desiredSampRate,sampleRate:sampleRate,numberOfAudioChannels:numberOfAudioChannels,internalInterleavedLength:recordingLength,leftBuffers:leftchannel,rightBuffers:1===numberOfAudioChannels?[]:rightchannel,noWorker:config.noWorker},function(buffer,view){self.blob=new Blob([view],{type:"audio/wav"}),self.buffer=new ArrayBuffer(view.buffer.byteLength),self.view=view,self.sampleRate=desiredSampRate||sampleRate,self.bufferSize=bufferSize,self.length=recordingLength,isAudioProcessStarted=!1,callback&&callback(self.blob)})},void 0===Storage)var Storage={AudioContextConstructor:null,AudioContext:window.AudioContext||window.webkitAudioContext};Storage.AudioContextConstructor||(Storage.AudioContextConstructor=new Storage.AudioContext);var context=Storage.AudioContextConstructor,audioInput=context.createMediaStreamSource(mediaStream),legalBufferValues=[0,256,512,1024,2048,4096,8192,16384],bufferSize=void 0===config.bufferSize?4096:config.bufferSize;if(-1===legalBufferValues.indexOf(bufferSize)&&(config.disableLogs||console.log("Legal values for buffer-size are "+JSON.stringify(legalBufferValues,null,"\t"))),context.createJavaScriptNode)jsAudioNode=context.createJavaScriptNode(bufferSize,numberOfAudioChannels,numberOfAudioChannels);else{if(!context.createScriptProcessor)throw"WebAudio API has no support on this browser.";jsAudioNode=context.createScriptProcessor(bufferSize,numberOfAudioChannels,numberOfAudioChannels)}audioInput.connect(jsAudioNode),config.bufferSize||(bufferSize=jsAudioNode.bufferSize);var sampleRate=void 0!==config.sampleRate?config.sampleRate:context.sampleRate||44100;(sampleRate<22050||96e3<sampleRate)&&(config.disableLogs||console.log("sample-rate must be under range 22050 and 96000.")),config.disableLogs||config.desiredSampRate&&console.log("Desired sample-rate: "+config.desiredSampRate);var isPaused=!1;function resetVariables(){leftchannel=[],recordingLength=0,isPaused=recording=isAudioProcessStarted=!(rightchannel=[]),context=null,self.leftchannel=leftchannel,self.rightchannel=rightchannel,self.numberOfAudioChannels=numberOfAudioChannels,self.desiredSampRate=desiredSampRate,self.sampleRate=sampleRate,self.recordingLength=recordingLength,intervalsBasedBuffers={left:[],right:[],recordingLength:0}}function clearRecordedDataCB(){jsAudioNode&&(jsAudioNode.onaudioprocess=null,jsAudioNode.disconnect(),jsAudioNode=null),audioInput&&(audioInput.disconnect(),audioInput=null),resetVariables()}this.pause=function(){isPaused=!0},this.resume=function(){if(!1===isMediaStreamActive())throw"Please make sure MediaStream is active.";if(!recording)return config.disableLogs||console.log("Seems recording has been restarted."),void this.record();isPaused=!1},this.clearRecordedData=function(){config.checkForInactiveTracks=!1,recording&&this.stop(clearRecordedDataCB),clearRecordedDataCB()},this.name="StereoAudioRecorder";var isAudioProcessStarted=!(this.toString=function(){return this.name});jsAudioNode.onaudioprocess=function(e){if(!isPaused)if(!1===isMediaStreamActive()&&(config.disableLogs||console.log("MediaStream seems stopped."),jsAudioNode.disconnect(),recording=!1),recording){isAudioProcessStarted||(isAudioProcessStarted=!0,config.onAudioProcessStarted&&config.onAudioProcessStarted(),config.initCallback&&config.initCallback());var left=e.inputBuffer.getChannelData(0),chLeft=new Float32Array(left);if(leftchannel.push(chLeft),2===numberOfAudioChannels){var right=e.inputBuffer.getChannelData(1),chRight=new Float32Array(right);rightchannel.push(chRight)}recordingLength+=bufferSize,self.recordingLength=recordingLength,void 0!==config.timeSlice&&(intervalsBasedBuffers.recordingLength+=bufferSize,intervalsBasedBuffers.left.push(chLeft),2===numberOfAudioChannels&&intervalsBasedBuffers.right.push(chRight))}else audioInput&&(audioInput.disconnect(),audioInput=null)},context.createMediaStreamDestination?jsAudioNode.connect(context.createMediaStreamDestination()):jsAudioNode.connect(context.destination),this.leftchannel=leftchannel,this.rightchannel=rightchannel,this.numberOfAudioChannels=numberOfAudioChannels,this.desiredSampRate=desiredSampRate,this.sampleRate=sampleRate,self.recordingLength=recordingLength;var intervalsBasedBuffers={left:[],right:[],recordingLength:0};function looper(){recording&&"function"==typeof config.ondataavailable&&void 0!==config.timeSlice&&(intervalsBasedBuffers.left.length?(mergeLeftRightBuffers({desiredSampRate:desiredSampRate,sampleRate:sampleRate,numberOfAudioChannels:numberOfAudioChannels,internalInterleavedLength:intervalsBasedBuffers.recordingLength,leftBuffers:intervalsBasedBuffers.left,rightBuffers:1===numberOfAudioChannels?[]:intervalsBasedBuffers.right},function(buffer,view){var blob=new Blob([view],{type:"audio/wav"});config.ondataavailable(blob),setTimeout(looper,config.timeSlice)}),intervalsBasedBuffers={left:[],right:[],recordingLength:0}):setTimeout(looper,config.timeSlice))}}function CanvasRecorder(htmlElement,config){if("undefined"==typeof html2canvas)throw"Please link: https://cdn.webrtc-experiment.com/screenshot.js";(config=config||{}).frameInterval||(config.frameInterval=10);var isCanvasSupportsStreamCapturing=!1;["captureStream","mozCaptureStream","webkitCaptureStream"].forEach(function(item){item in document.createElement("canvas")&&(isCanvasSupportsStreamCapturing=!0)});var globalCanvas,mediaStreamRecorder,isRecording,_isChrome=!(!window.webkitRTCPeerConnection&&!window.webkitGetUserMedia||!window.chrome),chromeVersion=50,matchArray=navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);if(_isChrome&&matchArray&&matchArray[2]&&(chromeVersion=parseInt(matchArray[2],10)),_isChrome&&chromeVersion<52&&(isCanvasSupportsStreamCapturing=!1),config.useWhammyRecorder&&(isCanvasSupportsStreamCapturing=!1),isCanvasSupportsStreamCapturing)if(config.disableLogs||console.log("Your browser supports both MediRecorder API and canvas.captureStream!"),htmlElement instanceof HTMLCanvasElement)globalCanvas=htmlElement;else{if(!(htmlElement instanceof CanvasRenderingContext2D))throw"Please pass either HTMLCanvasElement or CanvasRenderingContext2D.";globalCanvas=htmlElement.canvas}else navigator.mozGetUserMedia&&(config.disableLogs||console.error("Canvas recording is NOT supported in Firefox."));this.record=function(){if(isRecording=!0,isCanvasSupportsStreamCapturing&&!config.useWhammyRecorder){var canvasMediaStream;"captureStream"in globalCanvas?canvasMediaStream=globalCanvas.captureStream(25):"mozCaptureStream"in globalCanvas?canvasMediaStream=globalCanvas.mozCaptureStream(25):"webkitCaptureStream"in globalCanvas&&(canvasMediaStream=globalCanvas.webkitCaptureStream(25));try{var mdStream=new MediaStream;mdStream.addTrack(getTracks(canvasMediaStream,"video")[0]),canvasMediaStream=mdStream}catch(e){}if(!canvasMediaStream)throw"captureStream API are NOT available.";(mediaStreamRecorder=new MediaStreamRecorder(canvasMediaStream,{mimeType:config.mimeType||"video/webm"})).record()}else whammy.frames=[],lastTime=(new Date).getTime(),drawCanvasFrame();config.initCallback&&config.initCallback()},this.getWebPImages=function(callback){if("canvas"===htmlElement.nodeName.toLowerCase()){var framesLength=whammy.frames.length;whammy.frames.forEach(function(frame,idx){var framesRemaining=framesLength-idx;config.disableLogs||console.log(framesRemaining+"/"+framesLength+" frames remaining"),config.onEncodingCallback&&config.onEncodingCallback(framesRemaining,framesLength);var webp=frame.image.toDataURL("image/webp",1);whammy.frames[idx].image=webp}),config.disableLogs||console.log("Generating WebM"),callback()}else callback()};var isPausedRecording=!(this.stop=function(callback){isRecording=!1;var that=this;isCanvasSupportsStreamCapturing&&mediaStreamRecorder?mediaStreamRecorder.stop(callback):this.getWebPImages(function(){whammy.compile(function(blob){config.disableLogs||console.log("Recording finished!"),that.blob=blob,that.blob.forEach&&(that.blob=new Blob([],{type:"video/webm"})),callback&&callback(that.blob),whammy.frames=[]})})});function clearRecordedDataCB(){whammy.frames=[],isPausedRecording=isRecording=!1}function drawCanvasFrame(){if(isPausedRecording)return lastTime=(new Date).getTime(),setTimeout(drawCanvasFrame,500);if("canvas"===htmlElement.nodeName.toLowerCase()){var duration=(new Date).getTime()-lastTime;return lastTime=(new Date).getTime(),whammy.frames.push({image:(newCanvas=document.createElement("canvas"),context=newCanvas.getContext("2d"),newCanvas.width=htmlElement.width,newCanvas.height=htmlElement.height,context.drawImage(htmlElement,0,0),newCanvas),duration:duration}),void(isRecording&&setTimeout(drawCanvasFrame,config.frameInterval))}var newCanvas,context;html2canvas(htmlElement,{grabMouse:void 0===config.showMousePointer||config.showMousePointer,onrendered:function(canvas){var duration=(new Date).getTime()-lastTime;if(!duration)return setTimeout(drawCanvasFrame,config.frameInterval);lastTime=(new Date).getTime(),whammy.frames.push({image:canvas.toDataURL("image/webp",1),duration:duration}),isRecording&&setTimeout(drawCanvasFrame,config.frameInterval)}})}this.pause=function(){isPausedRecording=!0,mediaStreamRecorder instanceof MediaStreamRecorder&&mediaStreamRecorder.pause()},this.resume=function(){isPausedRecording=!1,mediaStreamRecorder instanceof MediaStreamRecorder?mediaStreamRecorder.resume():isRecording||this.record()},this.clearRecordedData=function(){isRecording&&this.stop(clearRecordedDataCB),clearRecordedDataCB()},this.name="CanvasRecorder",this.toString=function(){return this.name};var lastTime=(new Date).getTime(),whammy=new Whammy.Video(100)}function WhammyRecorder(mediaStream,config){function drawFrames(frameInterval){frameInterval=void 0!==frameInterval?frameInterval:10;var duration=(new Date).getTime()-lastTime;return duration?isPausedRecording?(lastTime=(new Date).getTime(),setTimeout(drawFrames,100)):(lastTime=(new Date).getTime(),video.paused&&video.play(),context.drawImage(video,0,0,canvas.width,canvas.height),whammy.frames.push({duration:duration,image:canvas.toDataURL("image/webp")}),void(isStopDrawing||setTimeout(drawFrames,frameInterval,frameInterval))):setTimeout(drawFrames,frameInterval,frameInterval)}function dropBlackFrames(_frames,_framesToCheck,_pixTolerance,_frameTolerance,callback){var localCanvas=document.createElement("canvas");localCanvas.width=canvas.width,localCanvas.height=canvas.height;var o,i,length,context2d=localCanvas.getContext("2d"),resultFrames=[],checkUntilNotBlack=-1===_framesToCheck,endCheckFrame=_framesToCheck&&0<_framesToCheck&&_framesToCheck<=_frames.length?_framesToCheck:_frames.length,sampleColor_r=0,sampleColor_g=0,sampleColor_b=0,maxColorDifference=Math.sqrt(Math.pow(255,2)+Math.pow(255,2)+Math.pow(255,2)),pixTolerance=_pixTolerance&&0<=_pixTolerance&&_pixTolerance<=1?_pixTolerance:0,frameTolerance=_frameTolerance&&0<=_frameTolerance&&_frameTolerance<=1?_frameTolerance:0,doNotCheckNext=!1;i=-1,length=(o={length:endCheckFrame,functionToLoop:function(loop,f){var matchPixCount,endPixCheck,maxPixCount,finishImage=function(){!doNotCheckNext&&maxPixCount-matchPixCount<=maxPixCount*frameTolerance||(checkUntilNotBlack&&(doNotCheckNext=!0),resultFrames.push(_frames[f])),loop()};if(doNotCheckNext)finishImage();else{var image=new Image;image.onload=function(){context2d.drawImage(image,0,0,canvas.width,canvas.height);var imageData=context2d.getImageData(0,0,canvas.width,canvas.height);matchPixCount=0,endPixCheck=imageData.data.length,maxPixCount=imageData.data.length/4;for(var pix=0;pix<endPixCheck;pix+=4){var currentColor_r=imageData.data[pix],currentColor_g=imageData.data[pix+1],currentColor_b=imageData.data[pix+2];Math.sqrt(Math.pow(currentColor_r-sampleColor_r,2)+Math.pow(currentColor_g-sampleColor_g,2)+Math.pow(currentColor_b-sampleColor_b,2))<=maxColorDifference*pixTolerance&&matchPixCount++}finishImage()},image.src=_frames[f].image}},callback:function(){(resultFrames=resultFrames.concat(_frames.slice(endCheckFrame))).length<=0&&resultFrames.push(_frames[_frames.length-1]),callback(resultFrames)}}).length,function loop(){++i!==length?setTimeout(function(){o.functionToLoop(loop,i)},1):o.callback()}()}(config=config||{}).frameInterval||(config.frameInterval=10),config.disableLogs||console.log("Using frames-interval:",config.frameInterval);var isStopDrawing=!(this.record=function(){config.width||(config.width=320),config.height||(config.height=240),config.video||(config.video={width:config.width,height:config.height}),config.canvas||(config.canvas={width:config.width,height:config.height}),canvas.width=config.canvas.width||320,canvas.height=config.canvas.height||240,context=canvas.getContext("2d"),config.video&&config.video instanceof HTMLVideoElement?(video=config.video.cloneNode(),config.initCallback&&config.initCallback()):(video=document.createElement("video"),setSrcObject(mediaStream,video),video.onloadedmetadata=function(){config.initCallback&&config.initCallback()},video.width=config.video.width,video.height=config.video.height),video.muted=!0,video.play(),lastTime=(new Date).getTime(),whammy=new Whammy.Video,config.disableLogs||(console.log("canvas resolutions",canvas.width,"*",canvas.height),console.log("video width/height",video.width||canvas.width,"*",video.height||canvas.height)),drawFrames(config.frameInterval)}),isPausedRecording=!(this.stop=function(callback){callback=callback||function(){},isStopDrawing=!0;var _this=this;setTimeout(function(){dropBlackFrames(whammy.frames,-1,null,null,function(frames){whammy.frames=frames,config.advertisement&&config.advertisement.length&&(whammy.frames=config.advertisement.concat(whammy.frames)),whammy.compile(function(blob){_this.blob=blob,_this.blob.forEach&&(_this.blob=new Blob([],{type:"video/webm"})),callback&&callback(_this.blob)})})},10)});function clearRecordedDataCB(){whammy.frames=[],isPausedRecording=!(isStopDrawing=!0)}this.pause=function(){isPausedRecording=!0},this.resume=function(){isPausedRecording=!1,isStopDrawing&&this.record()},this.clearRecordedData=function(){isStopDrawing||this.stop(clearRecordedDataCB),clearRecordedDataCB()},this.name="WhammyRecorder",this.toString=function(){return this.name};var video,lastTime,whammy,canvas=document.createElement("canvas"),context=canvas.getContext("2d")}void 0!==AudioContext?Storage.AudioContext=AudioContext:"undefined"!=typeof webkitAudioContext&&(Storage.AudioContext=webkitAudioContext),void 0!==RecordRTC&&(RecordRTC.Storage=Storage),void 0!==RecordRTC&&(RecordRTC.MediaStreamRecorder=MediaStreamRecorder),void 0!==RecordRTC&&(RecordRTC.StereoAudioRecorder=StereoAudioRecorder),void 0!==RecordRTC&&(RecordRTC.CanvasRecorder=CanvasRecorder),void 0!==RecordRTC&&(RecordRTC.WhammyRecorder=WhammyRecorder);var Whammy=function(){function WhammyVideo(duration){this.frames=[],this.duration=duration||1,this.quality=.8}function whammyInWebWorker(frames){function getClusterData(clusterTimecode,clusterCounter,clusterFrames){return[{data:clusterTimecode,id:231}].concat(clusterFrames.map(function(webp){var block=function(data){var flags=0;data.keyframe&&(flags|=128);data.invisible&&(flags|=8);data.lacing&&(flags|=data.lacing<<1);data.discardable&&(flags|=1);if(127<data.trackNum)throw"TrackNumber > 127 not supported";return[128|data.trackNum,data.timecode>>8,255&data.timecode,flags].map(function(e){return String.fromCharCode(e)}).join("")+data.frame}({discardable:0,frame:webp.data.slice(4),invisible:0,keyframe:1,lacing:0,trackNum:1,timecode:Math.round(clusterCounter)});return clusterCounter+=webp.duration,{data:block,id:163}}))}function numToBuffer(num){for(var parts=[];0<num;)parts.push(255&num),num>>=8;return new Uint8Array(parts.reverse())}function bitsToBuffer(bits){var data=[];bits=(bits.length%8?new Array(9-bits.length%8).join("0"):"")+bits;for(var i=0;i<bits.length;i+=8)data.push(parseInt(bits.substr(i,8),2));return new Uint8Array(data)}function getStrLength(string,offset){return parseInt(string.substr(offset+4,4).split("").map(function(i){var unpadded=i.charCodeAt(0).toString(2);return new Array(8-unpadded.length+1).join("0")+unpadded}).join(""),2)}var webm=new function(frames){var info=function(frames){if(frames[0]){for(var width=frames[0].width,height=frames[0].height,duration=frames[0].duration,i=1;i<frames.length;i++)duration+=frames[i].duration;return{duration:duration,width:width,height:height}}postMessage({error:"Something went wrong. Maybe WebP format is not supported in the current browser."})}(frames);if(!info)return[];for(var num,EBML=[{id:440786851,data:[{data:1,id:17030},{data:1,id:17143},{data:4,id:17138},{data:8,id:17139},{data:"webm",id:17026},{data:2,id:17031},{data:2,id:17029}]},{id:408125543,data:[{id:357149030,data:[{data:1e6,id:2807729},{data:"whammy",id:19840},{data:"whammy",id:22337},{data:(num=info.duration,[].slice.call(new Uint8Array(new Float64Array([num]).buffer),0).map(function(e){return String.fromCharCode(e)}).reverse().join("")),id:17545}]},{id:374648427,data:[{id:174,data:[{data:1,id:215},{data:1,id:29637},{data:0,id:156},{data:"und",id:2274716},{data:"V_VP8",id:134},{data:"VP8",id:2459272},{data:1,id:131},{id:224,data:[{data:info.width,id:176},{data:info.height,id:186}]}]}]}]}],frameNumber=0,clusterTimecode=0;frameNumber<frames.length;){for(var clusterFrames=[],clusterDuration=0;clusterFrames.push(frames[frameNumber]),clusterDuration+=frames[frameNumber].duration,++frameNumber<frames.length&&clusterDuration<3e4;);var cluster={id:524531317,data:getClusterData(clusterTimecode,0,clusterFrames)};EBML[1].data.push(cluster),clusterTimecode+=clusterDuration}return function generateEBML(json){for(var ebml=[],i=0;i<json.length;i++){var data=json[i].data;"object"==typeof data&&(data=generateEBML(data)),"number"==typeof data&&(data=bitsToBuffer(data.toString(2))),"string"==typeof data&&(data=new Uint8Array(data.split("").map(function(e){return e.charCodeAt(0)})));var len=data.size||data.byteLength||data.length,zeroes=Math.ceil(Math.ceil(Math.log(len)/Math.log(2))/8),sizeToString=len.toString(2),padded=new Array(7*zeroes+7+1-sizeToString.length).join("0")+sizeToString,size=new Array(zeroes).join("0")+"1"+padded;ebml.push(numToBuffer(json[i].id)),ebml.push(bitsToBuffer(size)),ebml.push(data)}return new Blob(ebml,{type:"video/webm"})}(EBML)}(frames.map(function(frame){var webp=function(riff){for(var VP8=riff.RIFF[0].WEBP[0],frameStart=VP8.indexOf("
*"),i=0,c=[];i<4;i++)c[i]=VP8.charCodeAt(frameStart+3+i);return{width:16383&(c[1]<<8|c[0]),height:16383&(c[3]<<8|c[2]),data:VP8,riff:riff}}(function parseRIFF(string){for(var offset=0,chunks={};offset<string.length;){var id=string.substr(offset,4),len=getStrLength(string,offset),data=string.substr(offset+4+4,len);offset+=8+len,chunks[id]=chunks[id]||[],"RIFF"===id||"LIST"===id?chunks[id].push(parseRIFF(data)):chunks[id].push(data)}return chunks}(atob(frame.image.slice(23))));return webp.duration=frame.duration,webp}));postMessage(webm)}return WhammyVideo.prototype.add=function(frame,duration){if("canvas"in frame&&(frame=frame.canvas),"toDataURL"in frame&&(frame=frame.toDataURL("image/webp",this.quality)),!/^data:image\/webp;base64,/gi.test(frame))throw"Input must be formatted properly as a base64 encoded DataURI of type image/webp";this.frames.push({image:frame,duration:duration||this.duration})},WhammyVideo.prototype.compile=function(callback){var _function,blob,worker,webWorker=(_function=whammyInWebWorker,blob=URL.createObjectURL(new Blob([_function.toString(),"this.onmessage =  function (eee) {"+_function.name+"(eee.data);}"],{type:"application/javascript"})),worker=new Worker(blob),URL.revokeObjectURL(blob),worker);webWorker.onmessage=function(event){event.data.error?console.error(event.data.error):callback(event.data)},webWorker.postMessage(this.frames)},{Video:WhammyVideo}}();void 0!==RecordRTC&&(RecordRTC.Whammy=Whammy);var DiskStorage={init:function(){var self=this;if("undefined"!=typeof indexedDB&&void 0!==indexedDB.open){var db,dbName=this.dbName||location.href.replace(/\/|:|#|%|\.|\[|\]/g,""),request=indexedDB.open(dbName,1);request.onerror=self.onError,request.onsuccess=function(){((db=request.result).onerror=self.onError,db.setVersion)?1!==db.version?db.setVersion(1).onsuccess=function(){createObjectStore(db),putInDB()}:putInDB():putInDB()},request.onupgradeneeded=function(event){createObjectStore(event.target.result)}}else console.error("IndexedDB API are not available in this browser.");function createObjectStore(dataBase){dataBase.createObjectStore(self.dataStoreName)}function putInDB(){var transaction=db.transaction([self.dataStoreName],"readwrite");function getFromStore(portionName){transaction.objectStore(self.dataStoreName).get(portionName).onsuccess=function(event){self.callback&&self.callback(event.target.result,portionName)}}self.videoBlob&&transaction.objectStore(self.dataStoreName).put(self.videoBlob,"videoBlob"),self.gifBlob&&transaction.objectStore(self.dataStoreName).put(self.gifBlob,"gifBlob"),self.audioBlob&&transaction.objectStore(self.dataStoreName).put(self.audioBlob,"audioBlob"),getFromStore("audioBlob"),getFromStore("videoBlob"),getFromStore("gifBlob")}},Fetch:function(callback){return this.callback=callback,this.init(),this},Store:function(config){return this.audioBlob=config.audioBlob,this.videoBlob=config.videoBlob,this.gifBlob=config.gifBlob,this.init(),this},onError:function(error){console.error(JSON.stringify(error,null,"\t"))},dataStoreName:"recordRTC",dbName:null};function GifRecorder(mediaStream,config){if("undefined"==typeof GIFEncoder){var script=document.createElement("script");script.src="https://cdn.webrtc-experiment.com/gif-recorder.js",(document.body||document.documentElement).appendChild(script)}config=config||{};var isHTMLObject=mediaStream instanceof CanvasRenderingContext2D||mediaStream instanceof HTMLCanvasElement;this.record=function(){"undefined"!=typeof GIFEncoder&&isLoadedMetaData?(isHTMLObject||(config.width||(config.width=video.offsetWidth||320),config.height||(config.height=video.offsetHeight||240),config.video||(config.video={width:config.width,height:config.height}),config.canvas||(config.canvas={width:config.width,height:config.height}),canvas.width=config.canvas.width||320,canvas.height=config.canvas.height||240,video.width=config.video.width||320,video.height=config.video.height||240),(gifEncoder=new GIFEncoder).setRepeat(0),gifEncoder.setDelay(config.frameRate||200),gifEncoder.setQuality(config.quality||10),gifEncoder.start(),"function"==typeof config.onGifRecordingStarted&&config.onGifRecordingStarted(),Date.now(),lastAnimationFrame=requestAnimationFrame(function drawVideoFrame(time){if(!0!==self.clearedRecordedData){if(isPausedRecording)return setTimeout(function(){drawVideoFrame(time)},100);lastAnimationFrame=requestAnimationFrame(drawVideoFrame),void 0===typeof lastFrameTime&&(lastFrameTime=time),time-lastFrameTime<90||(!isHTMLObject&&video.paused&&video.play(),isHTMLObject||context.drawImage(video,0,0,canvas.width,canvas.height),config.onGifPreview&&config.onGifPreview(canvas.toDataURL("image/png")),gifEncoder.addFrame(context),lastFrameTime=time)}}),config.initCallback&&config.initCallback()):setTimeout(self.record,1e3)};var isPausedRecording=!(this.stop=function(callback){callback=callback||function(){},lastAnimationFrame&&cancelAnimationFrame(lastAnimationFrame),Date.now(),this.blob=new Blob([new Uint8Array(gifEncoder.stream().bin)],{type:"image/gif"}),callback(this.blob),gifEncoder.stream().bin=[]});this.pause=function(){isPausedRecording=!0},this.resume=function(){isPausedRecording=!1},this.clearRecordedData=function(){self.clearedRecordedData=!0,gifEncoder&&(gifEncoder.stream().bin=[])},this.name="GifRecorder",this.toString=function(){return this.name};var canvas=document.createElement("canvas"),context=canvas.getContext("2d");isHTMLObject&&(mediaStream instanceof CanvasRenderingContext2D?canvas=(context=mediaStream).canvas:mediaStream instanceof HTMLCanvasElement&&(context=mediaStream.getContext("2d"),canvas=mediaStream));var isLoadedMetaData=!0;if(!isHTMLObject){var video=document.createElement("video");video.muted=!0,video.autoplay=!0,isLoadedMetaData=!1,video.onloadedmetadata=function(){isLoadedMetaData=!0},setSrcObject(mediaStream,video),video.play()}var lastFrameTime,gifEncoder,lastAnimationFrame=null,self=this}function MultiStreamsMixer(arrayOfMediaStreams){var videos=[],isStopDrawingFrames=!1,canvas=document.createElement("canvas"),context=canvas.getContext("2d");canvas.style="opacity:0;position:absolute;z-index:-1;top: -100000000;left:-1000000000; margin-top:-1000000000;margin-left:-1000000000;",(document.body||document.documentElement).appendChild(canvas),this.disableLogs=!1,this.frameInterval=10,this.width=360,this.height=240,this.useGainNode=!0;var self=this,AudioContext=window.AudioContext;void 0===AudioContext&&("undefined"!=typeof webkitAudioContext&&(AudioContext=webkitAudioContext),"undefined"!=typeof mozAudioContext&&(AudioContext=mozAudioContext));var URL=window.URL;void 0===URL&&"undefined"!=typeof webkitURL&&(URL=webkitURL),"undefined"!=typeof navigator&&void 0===navigator.getUserMedia&&(void 0!==navigator.webkitGetUserMedia&&(navigator.getUserMedia=navigator.webkitGetUserMedia),void 0!==navigator.mozGetUserMedia&&(navigator.getUserMedia=navigator.mozGetUserMedia));var MediaStream=window.MediaStream;void 0===MediaStream&&"undefined"!=typeof webkitMediaStream&&(MediaStream=webkitMediaStream),void 0!==MediaStream&&void 0===MediaStream.prototype.stop&&(MediaStream.prototype.stop=function(){this.getTracks().forEach(function(track){track.stop()})});var Storage={};function drawVideosToCanvas(){if(!isStopDrawingFrames){var videosLength=videos.length,fullcanvas=!1,remaining=[];if(videos.forEach(function(video){video.stream||(video.stream={}),video.stream.fullcanvas?fullcanvas=video:remaining.push(video)}),fullcanvas)canvas.width=fullcanvas.stream.width,canvas.height=fullcanvas.stream.height;else if(remaining.length){canvas.width=1<videosLength?2*remaining[0].width:remaining[0].width;var height=1;3!==videosLength&&4!==videosLength||(height=2),5!==videosLength&&6!==videosLength||(height=3),7!==videosLength&&8!==videosLength||(height=4),9!==videosLength&&10!==videosLength||(height=5),canvas.height=remaining[0].height*height}else canvas.width=self.width||360,canvas.height=self.height||240;fullcanvas&&fullcanvas instanceof HTMLVideoElement&&drawImage(fullcanvas),remaining.forEach(function(video,idx){drawImage(video,idx)}),setTimeout(drawVideosToCanvas,self.frameInterval)}}function drawImage(video,idx){if(!isStopDrawingFrames){var x=0,y=0,width=video.width,height=video.height;1===idx&&(x=video.width),2===idx&&(y=video.height),3===idx&&(x=video.width,y=video.height),4===idx&&(y=2*video.height),5===idx&&(x=video.width,y=2*video.height),6===idx&&(y=3*video.height),7===idx&&(x=video.width,y=3*video.height),void 0!==video.stream.left&&(x=video.stream.left),void 0!==video.stream.top&&(y=video.stream.top),void 0!==video.stream.width&&(width=video.stream.width),void 0!==video.stream.height&&(height=video.stream.height),context.drawImage(video,x,y,width,height),"function"==typeof video.stream.onRender&&video.stream.onRender(context,x,y,width,height,idx)}}function getVideo(stream){var video=document.createElement("video");return function(stream,element){"srcObject"in element?element.srcObject=stream:"mozSrcObject"in element?element.mozSrcObject=stream:element.srcObject=stream}(stream,video),video.muted=!0,video.volume=0,video.width=stream.width||self.width||360,video.height=stream.height||self.height||240,video.play(),video}function resetVideoStreams(streams){videos=[],(streams=streams||arrayOfMediaStreams).forEach(function(stream){if(stream.getTracks().filter(function(t){return"video"===t.kind}).length){var video=getVideo(stream);video.stream=stream,videos.push(video)}})}void 0!==AudioContext?Storage.AudioContext=AudioContext:"undefined"!=typeof webkitAudioContext&&(Storage.AudioContext=webkitAudioContext),this.startDrawingFrames=function(){drawVideosToCanvas()},this.appendStreams=function(streams){if(!streams)throw"First parameter is required.";streams instanceof Array||(streams=[streams]),arrayOfMediaStreams.concat(streams),streams.forEach(function(stream){if(stream.getTracks().filter(function(t){return"video"===t.kind}).length){var video=getVideo(stream);video.stream=stream,videos.push(video)}if(stream.getTracks().filter(function(t){return"audio"===t.kind}).length&&self.audioContext){var audioSource=self.audioContext.createMediaStreamSource(stream);audioSource.connect(self.audioDestination),self.audioSources.push(audioSource)}})},this.releaseStreams=function(){videos=[],isStopDrawingFrames=!0,self.gainNode&&(self.gainNode.disconnect(),self.gainNode=null),self.audioSources.length&&(self.audioSources.forEach(function(source){source.disconnect()}),self.audioSources=[]),self.audioDestination&&(self.audioDestination.disconnect(),self.audioDestination=null),self.audioContext&&self.audioContext.close(),self.audioContext=null,context.clearRect(0,0,canvas.width,canvas.height),canvas.stream&&(canvas.stream.stop(),canvas.stream=null)},this.resetVideoStreams=function(streams){!streams||streams instanceof Array||(streams=[streams]),resetVideoStreams(streams)},this.name="MultiStreamsMixer",this.toString=function(){return this.name},this.getMixedStream=function(){isStopDrawingFrames=!1;var mixedVideoStream=function(){var capturedStream;resetVideoStreams(),"captureStream"in canvas?capturedStream=canvas.captureStream():"mozCaptureStream"in canvas?capturedStream=canvas.mozCaptureStream():self.disableLogs||console.error("Upgrade to latest Chrome or otherwise enable this flag: chrome://flags/#enable-experimental-web-platform-features");var videoStream=new MediaStream;return capturedStream.getTracks().filter(function(t){return"video"===t.kind}).forEach(function(track){videoStream.addTrack(track)}),canvas.stream=videoStream}(),mixedAudioStream=function(){Storage.AudioContextConstructor||(Storage.AudioContextConstructor=new Storage.AudioContext),self.audioContext=Storage.AudioContextConstructor,self.audioSources=[],!0===self.useGainNode&&(self.gainNode=self.audioContext.createGain(),self.gainNode.connect(self.audioContext.destination),self.gainNode.gain.value=0);var audioTracksLength=0;return arrayOfMediaStreams.forEach(function(stream){if(stream.getTracks().filter(function(t){return"audio"===t.kind}).length){audioTracksLength++;var audioSource=self.audioContext.createMediaStreamSource(stream);!0===self.useGainNode&&audioSource.connect(self.gainNode),self.audioSources.push(audioSource)}}),audioTracksLength?(self.audioDestination=self.audioContext.createMediaStreamDestination(),self.audioSources.forEach(function(audioSource){audioSource.connect(self.audioDestination)}),self.audioDestination.stream):void 0}();return mixedAudioStream&&mixedAudioStream.getTracks().filter(function(t){return"audio"===t.kind}).forEach(function(track){mixedVideoStream.addTrack(track)}),arrayOfMediaStreams.forEach(function(stream){stream.fullcanvas}),mixedVideoStream}}function MultiStreamRecorder(arrayOfMediaStreams,options){arrayOfMediaStreams=arrayOfMediaStreams||[];var mixer,mediaRecorder,self=this;(options=options||{mimeType:"video/webm",video:{width:360,height:240}}).frameInterval||(options.frameInterval=10),options.video||(options.video={}),options.video.width||(options.video.width=360),options.video.height||(options.video.height=240),this.record=function(){var tracks;mixer=new MultiStreamsMixer(arrayOfMediaStreams),(tracks=[],arrayOfMediaStreams.forEach(function(stream){getTracks(stream,"video").forEach(function(track){tracks.push(track)})}),tracks).length&&(mixer.frameInterval=options.frameInterval||10,mixer.width=options.video.width||360,mixer.height=options.video.height||240,mixer.startDrawingFrames()),options.previewStream&&"function"==typeof options.previewStream&&options.previewStream(mixer.getMixedStream()),(mediaRecorder=new MediaStreamRecorder(mixer.getMixedStream(),options)).record()},this.stop=function(callback){mediaRecorder&&mediaRecorder.stop(function(blob){self.blob=blob,callback(blob),self.clearRecordedData()})},this.pause=function(){mediaRecorder&&mediaRecorder.pause()},this.resume=function(){mediaRecorder&&mediaRecorder.resume()},this.clearRecordedData=function(){mediaRecorder&&(mediaRecorder.clearRecordedData(),mediaRecorder=null),mixer&&(mixer.releaseStreams(),mixer=null)},this.addStreams=function(streams){if(!streams)throw"First parameter is required.";streams instanceof Array||(streams=[streams]),arrayOfMediaStreams.concat(streams),mediaRecorder&&mixer&&mixer.appendStreams(streams)},this.resetVideoStreams=function(streams){mixer&&(!streams||streams instanceof Array||(streams=[streams]),mixer.resetVideoStreams(streams))},this.name="MultiStreamRecorder",this.toString=function(){return this.name}}function RecordRTCPromisesHandler(mediaStream,options){if(!this)throw'Use "new RecordRTCPromisesHandler()"';if(void 0===mediaStream)throw'First argument "MediaStream" is required.';var self=this;self.recordRTC=new RecordRTC(mediaStream,options),this.startRecording=function(){return new Promise(function(resolve,reject){try{self.recordRTC.startRecording(),resolve()}catch(e){reject(e)}})},this.stopRecording=function(){return new Promise(function(resolve,reject){try{self.recordRTC.stopRecording(function(url){self.blob=self.recordRTC.getBlob(),self.blob&&self.blob.size?resolve(url):reject("Empty blob.",self.blob)})}catch(e){reject(e)}})},this.getDataURL=function(callback){return new Promise(function(resolve,reject){try{self.recordRTC.getDataURL(function(dataURL){resolve(dataURL)})}catch(e){reject(e)}})},this.getBlob=function(){return new Promise(function(resolve,reject){try{resolve(self.recordRTC.getBlob())}catch(e){reject(e)}})},this.blob=null}void 0!==RecordRTC&&(RecordRTC.DiskStorage=DiskStorage),void 0!==RecordRTC&&(RecordRTC.GifRecorder=GifRecorder),void 0!==RecordRTC&&(RecordRTC.MultiStreamRecorder=MultiStreamRecorder),void 0!==RecordRTC&&(RecordRTC.RecordRTCPromisesHandler=RecordRTCPromisesHandler);
\ No newline at end of file
+"use strict";function RecordRTC(mediaStream,config){function startRecording(config2){return config2&&(config=new RecordRTCConfiguration(mediaStream,config2)),config.disableLogs||console.log("started recording "+config.type+" stream."),mediaRecorder?(mediaRecorder.clearRecordedData(),mediaRecorder.record(),setState("recording"),self.recordingDuration&&handleRecordingDuration(),self):(initRecorder(function(){self.recordingDuration&&handleRecordingDuration()}),self)}function initRecorder(initCallback){initCallback&&(config.initCallback=function(){initCallback(),initCallback=config.initCallback=null});var Recorder=new GetRecorderType(mediaStream,config);mediaRecorder=new Recorder(mediaStream,config),mediaRecorder.record(),setState("recording"),config.disableLogs||console.log("Initialized recorderType:",mediaRecorder.constructor.name,"for output-type:",config.type)}function stopRecording(callback){function _callback(__blob){if(!mediaRecorder)return void("function"==typeof callback.call?callback.call(self,""):callback(""));Object.keys(mediaRecorder).forEach(function(key){"function"!=typeof mediaRecorder[key]&&(self[key]=mediaRecorder[key])});var blob=mediaRecorder.blob;if(!blob){if(!__blob)throw"Recording failed.";mediaRecorder.blob=blob=__blob}if(blob&&!config.disableLogs&&console.log(blob.type,"->",bytesToSize(blob.size)),callback){var url;try{url=URL.createObjectURL(blob)}catch(e){}"function"==typeof callback.call?callback.call(self,url):callback(url)}config.autoWriteToDisk&&getDataURL(function(dataURL){var parameter={};parameter[config.type+"Blob"]=dataURL,DiskStorage.Store(parameter)})}return callback=callback||function(){},mediaRecorder?"paused"===self.state?(self.resumeRecording(),void setTimeout(function(){stopRecording(callback)},1)):("recording"===self.state||config.disableLogs||console.warn('Recording state should be: "recording", however current state is: ',self.state),config.disableLogs||console.log("Stopped recording "+config.type+" stream."),"gif"!==config.type?mediaRecorder.stop(_callback):(mediaRecorder.stop(),_callback()),void setState("stopped")):void warningLog()}function pauseRecording(){return mediaRecorder?"recording"!==self.state?void(config.disableLogs||console.warn("Unable to pause the recording. Recording state: ",self.state)):(setState("paused"),mediaRecorder.pause(),void(config.disableLogs||console.log("Paused recording."))):void warningLog()}function resumeRecording(){return mediaRecorder?"paused"!==self.state?void(config.disableLogs||console.warn("Unable to resume the recording. Recording state: ",self.state)):(setState("recording"),mediaRecorder.resume(),void(config.disableLogs||console.log("Resumed recording."))):void warningLog()}function readFile(_blob){postMessage((new FileReaderSync).readAsDataURL(_blob))}function getDataURL(callback,_mediaRecorder){function processInWebWorker(_function){try{var blob=URL.createObjectURL(new Blob([_function.toString(),"this.onmessage =  function (eee) {"+_function.name+"(eee.data);}"],{type:"application/javascript"})),worker=new Worker(blob);return URL.revokeObjectURL(blob),worker}catch(e){}}if(!callback)throw"Pass a callback function over getDataURL.";var blob=_mediaRecorder?_mediaRecorder.blob:(mediaRecorder||{}).blob;if(!blob)return config.disableLogs||console.warn("Blob encoder did not finish its job yet."),void setTimeout(function(){getDataURL(callback,_mediaRecorder)},1e3);if("undefined"==typeof Worker||navigator.mozGetUserMedia){var reader=new FileReader;reader.readAsDataURL(blob),reader.onload=function(event){callback(event.target.result)}}else{var webWorker=processInWebWorker(readFile);webWorker.onmessage=function(event){callback(event.data)},webWorker.postMessage(blob)}}function handleRecordingDuration(counter){if(counter=counter||0,"paused"===self.state)return void setTimeout(function(){handleRecordingDuration(counter)},1e3);if("stopped"!==self.state){if(counter>=self.recordingDuration)return void stopRecording(self.onRecordingStopped);counter+=1e3,setTimeout(function(){handleRecordingDuration(counter)},1e3)}}function setState(state){self&&(self.state=state,"function"==typeof self.onStateChanged.call?self.onStateChanged.call(self,state):self.onStateChanged(state))}function warningLog(){config.disableLogs!==!0&&console.warn(WARNING)}if(!mediaStream)throw"First parameter is required.";config=config||{type:"video"},config=new RecordRTCConfiguration(mediaStream,config);var mediaRecorder,self=this,WARNING='It seems that recorder is destroyed or "startRecording" is not invoked for '+config.type+" recorder.",returnObject={startRecording:startRecording,stopRecording:stopRecording,pauseRecording:pauseRecording,resumeRecording:resumeRecording,initRecorder:initRecorder,setRecordingDuration:function(recordingDuration,callback){if("undefined"==typeof recordingDuration)throw"recordingDuration is required.";if("number"!=typeof recordingDuration)throw"recordingDuration must be a number.";return self.recordingDuration=recordingDuration,self.onRecordingStopped=callback||function(){},{onRecordingStopped:function(callback){self.onRecordingStopped=callback}}},clearRecordedData:function(){return mediaRecorder?(mediaRecorder.clearRecordedData(),void(config.disableLogs||console.log("Cleared old recorded data."))):void warningLog()},getBlob:function(){return mediaRecorder?mediaRecorder.blob:void warningLog()},getDataURL:getDataURL,toURL:function(){return mediaRecorder?URL.createObjectURL(mediaRecorder.blob):void warningLog()},getInternalRecorder:function(){return mediaRecorder},save:function(fileName){return mediaRecorder?void invokeSaveAsDialog(mediaRecorder.blob,fileName):void warningLog()},getFromDisk:function(callback){return mediaRecorder?void RecordRTC.getFromDisk(config.type,callback):void warningLog()},setAdvertisementArray:function(arrayOfWebPImages){config.advertisement=[];for(var length=arrayOfWebPImages.length,i=0;i<length;i++)config.advertisement.push({duration:i,image:arrayOfWebPImages[i]})},blob:null,bufferSize:0,sampleRate:0,buffer:null,reset:function(){mediaRecorder&&"function"==typeof mediaRecorder.clearRecordedData&&mediaRecorder.clearRecordedData(),mediaRecorder=null,setState("inactive"),self.blob=null},onStateChanged:function(state){config.disableLogs||console.log("Recorder state changed:",state)},state:"inactive",getState:function(){return self.state},destroy:function(){var disableLogsCache=config.disableLogs;config={disableLogs:!0},self.reset(),setState("destroyed"),returnObject=self=null,Storage.AudioContextConstructor&&(Storage.AudioContextConstructor.close(),Storage.AudioContextConstructor=null),config.disableLogs=disableLogsCache,config.disableLogs||console.warn("RecordRTC is destroyed.")},version:"5.5.2"};if(!this)return self=returnObject,returnObject;for(var prop in returnObject)this[prop]=returnObject[prop];return self=this,returnObject}function RecordRTCConfiguration(mediaStream,config){return config.recorderType||config.type||(config.audio&&config.video?config.type="video":config.audio&&!config.video&&(config.type="audio")),config.recorderType&&!config.type&&(config.recorderType===WhammyRecorder||config.recorderType===CanvasRecorder||"undefined"!=typeof WebAssemblyRecorder&&config.recorderType===WebAssemblyRecorder?config.type="video":config.recorderType===GifRecorder?config.type="gif":config.recorderType===StereoAudioRecorder?config.type="audio":config.recorderType===MediaStreamRecorder&&(getTracks(mediaStream,"audio").length&&getTracks(mediaStream,"video").length?config.type="video":!getTracks(mediaStream,"audio").length&&getTracks(mediaStream,"video").length?config.type="video":getTracks(mediaStream,"audio").length&&!getTracks(mediaStream,"video").length&&(config.type="audio"))),"undefined"!=typeof MediaStreamRecorder&&"undefined"!=typeof MediaRecorder&&"requestData"in MediaRecorder.prototype&&(config.mimeType||(config.mimeType="video/webm"),config.type||(config.type=config.mimeType.split("/")[0]),!config.bitsPerSecond),config.type||(config.mimeType&&(config.type=config.mimeType.split("/")[0]),config.type||(config.type="audio")),config}function GetRecorderType(mediaStream,config){var recorder;return(isChrome||isEdge||isOpera)&&(recorder=StereoAudioRecorder),"undefined"!=typeof MediaRecorder&&"requestData"in MediaRecorder.prototype&&!isChrome&&(recorder=MediaStreamRecorder),"video"===config.type&&(isChrome||isOpera)&&(recorder=WhammyRecorder,"undefined"!=typeof WebAssemblyRecorder&&"undefined"!=typeof ReadableStream&&(recorder=WebAssemblyRecorder)),"gif"===config.type&&(recorder=GifRecorder),"canvas"===config.type&&(recorder=CanvasRecorder),isMediaRecorderCompatible()&&recorder!==CanvasRecorder&&recorder!==GifRecorder&&"undefined"!=typeof MediaRecorder&&"requestData"in MediaRecorder.prototype&&(getTracks(mediaStream,"video").length||getTracks(mediaStream,"audio").length)&&("audio"===config.type?"function"==typeof MediaRecorder.isTypeSupported&&MediaRecorder.isTypeSupported("audio/webm")&&(recorder=MediaStreamRecorder):"function"==typeof MediaRecorder.isTypeSupported&&MediaRecorder.isTypeSupported("video/webm")&&(recorder=MediaStreamRecorder)),mediaStream instanceof Array&&mediaStream.length&&(recorder=MultiStreamRecorder),config.recorderType&&(recorder=config.recorderType),!config.disableLogs&&recorder&&recorder.name&&console.log("Using recorderType:",recorder.name||recorder.constructor.name),!recorder&&isSafari&&(recorder=MediaStreamRecorder),recorder}function MRecordRTC(mediaStream){this.addStream=function(_mediaStream){_mediaStream&&(mediaStream=_mediaStream)},this.mediaType={audio:!0,video:!0},this.startRecording=function(){var recorderType,mediaType=this.mediaType,mimeType=this.mimeType||{audio:null,video:null,gif:null};if("function"!=typeof mediaType.audio&&isMediaRecorderCompatible()&&!getTracks(mediaStream,"audio").length&&(mediaType.audio=!1),"function"!=typeof mediaType.video&&isMediaRecorderCompatible()&&!getTracks(mediaStream,"video").length&&(mediaType.video=!1),"function"!=typeof mediaType.gif&&isMediaRecorderCompatible()&&!getTracks(mediaStream,"video").length&&(mediaType.gif=!1),!mediaType.audio&&!mediaType.video&&!mediaType.gif)throw"MediaStream must have either audio or video tracks.";if(mediaType.audio&&(recorderType=null,"function"==typeof mediaType.audio&&(recorderType=mediaType.audio),this.audioRecorder=new RecordRTC(mediaStream,{type:"audio",bufferSize:this.bufferSize,sampleRate:this.sampleRate,numberOfAudioChannels:this.numberOfAudioChannels||2,disableLogs:this.disableLogs,recorderType:recorderType,mimeType:mimeType.audio,timeSlice:this.timeSlice,onTimeStamp:this.onTimeStamp}),mediaType.video||this.audioRecorder.startRecording()),mediaType.video){recorderType=null,"function"==typeof mediaType.video&&(recorderType=mediaType.video);var newStream=mediaStream;if(isMediaRecorderCompatible()&&mediaType.audio&&"function"==typeof mediaType.audio){var videoTrack=getTracks(mediaStream,"video")[0];navigator.mozGetUserMedia?(newStream=new MediaStream,newStream.addTrack(videoTrack),recorderType&&recorderType===WhammyRecorder&&(recorderType=MediaStreamRecorder)):newStream=new MediaStream([videoTrack])}this.videoRecorder=new RecordRTC(newStream,{type:"video",video:this.video,canvas:this.canvas,frameInterval:this.frameInterval||10,disableLogs:this.disableLogs,recorderType:recorderType,mimeType:mimeType.video,timeSlice:this.timeSlice,onTimeStamp:this.onTimeStamp}),mediaType.audio||this.videoRecorder.startRecording()}if(mediaType.audio&&mediaType.video){var self=this;isMediaRecorderCompatible()?(self.audioRecorder=null,self.videoRecorder.startRecording()):self.videoRecorder.initRecorder(function(){self.audioRecorder.initRecorder(function(){self.videoRecorder.startRecording(),self.audioRecorder.startRecording()})})}mediaType.gif&&(recorderType=null,"function"==typeof mediaType.gif&&(recorderType=mediaType.gif),this.gifRecorder=new RecordRTC(mediaStream,{type:"gif",frameRate:this.frameRate||200,quality:this.quality||10,disableLogs:this.disableLogs,recorderType:recorderType,mimeType:mimeType.gif}),this.gifRecorder.startRecording())},this.stopRecording=function(callback){callback=callback||function(){},this.audioRecorder&&this.audioRecorder.stopRecording(function(blobURL){callback(blobURL,"audio")}),this.videoRecorder&&this.videoRecorder.stopRecording(function(blobURL){callback(blobURL,"video")}),this.gifRecorder&&this.gifRecorder.stopRecording(function(blobURL){callback(blobURL,"gif")})},this.pauseRecording=function(){this.audioRecorder&&this.audioRecorder.pauseRecording(),this.videoRecorder&&this.videoRecorder.pauseRecording(),this.gifRecorder&&this.gifRecorder.pauseRecording()},this.resumeRecording=function(){this.audioRecorder&&this.audioRecorder.resumeRecording(),this.videoRecorder&&this.videoRecorder.resumeRecording(),this.gifRecorder&&this.gifRecorder.resumeRecording()},this.getBlob=function(callback){var output={};return this.audioRecorder&&(output.audio=this.audioRecorder.getBlob()),this.videoRecorder&&(output.video=this.videoRecorder.getBlob()),this.gifRecorder&&(output.gif=this.gifRecorder.getBlob()),callback&&callback(output),output},this.destroy=function(){this.audioRecorder&&(this.audioRecorder.destroy(),this.audioRecorder=null),this.videoRecorder&&(this.videoRecorder.destroy(),this.videoRecorder=null),this.gifRecorder&&(this.gifRecorder.destroy(),this.gifRecorder=null)},this.getDataURL=function(callback){function getDataURL(blob,callback00){if("undefined"!=typeof Worker){var webWorker=processInWebWorker(function(_blob){postMessage((new FileReaderSync).readAsDataURL(_blob))});webWorker.onmessage=function(event){callback00(event.data)},webWorker.postMessage(blob)}else{var reader=new FileReader;reader.readAsDataURL(blob),reader.onload=function(event){callback00(event.target.result)}}}function processInWebWorker(_function){var url,blob=URL.createObjectURL(new Blob([_function.toString(),"this.onmessage =  function (eee) {"+_function.name+"(eee.data);}"],{type:"application/javascript"})),worker=new Worker(blob);if("undefined"!=typeof URL)url=URL;else{if("undefined"==typeof webkitURL)throw"Neither URL nor webkitURL detected.";url=webkitURL}return url.revokeObjectURL(blob),worker}this.getBlob(function(blob){blob.audio&&blob.video?getDataURL(blob.audio,function(_audioDataURL){getDataURL(blob.video,function(_videoDataURL){callback({audio:_audioDataURL,video:_videoDataURL})})}):blob.audio?getDataURL(blob.audio,function(_audioDataURL){callback({audio:_audioDataURL})}):blob.video&&getDataURL(blob.video,function(_videoDataURL){callback({video:_videoDataURL})})})},this.writeToDisk=function(){RecordRTC.writeToDisk({audio:this.audioRecorder,video:this.videoRecorder,gif:this.gifRecorder})},this.save=function(args){args=args||{audio:!0,video:!0,gif:!0},args.audio&&this.audioRecorder&&this.audioRecorder.save("string"==typeof args.audio?args.audio:""),args.video&&this.videoRecorder&&this.videoRecorder.save("string"==typeof args.video?args.video:""),args.gif&&this.gifRecorder&&this.gifRecorder.save("string"==typeof args.gif?args.gif:"")}}function bytesToSize(bytes){var k=1e3,sizes=["Bytes","KB","MB","GB","TB"];if(0===bytes)return"0 Bytes";var i=parseInt(Math.floor(Math.log(bytes)/Math.log(k)),10);return(bytes/Math.pow(k,i)).toPrecision(3)+" "+sizes[i]}function invokeSaveAsDialog(file,fileName){if(!file)throw"Blob object is required.";if(!file.type)try{file.type="video/webm"}catch(e){}var fileExtension=(file.type||"video/webm").split("/")[1];if(fileName&&fileName.indexOf(".")!==-1){var splitted=fileName.split(".");fileName=splitted[0],fileExtension=splitted[1]}var fileFullName=(fileName||Math.round(9999999999*Math.random())+888888888)+"."+fileExtension;if("undefined"!=typeof navigator.msSaveOrOpenBlob)return navigator.msSaveOrOpenBlob(file,fileFullName);if("undefined"!=typeof navigator.msSaveBlob)return navigator.msSaveBlob(file,fileFullName);var hyperlink=document.createElement("a");hyperlink.href=URL.createObjectURL(file),hyperlink.download=fileFullName,hyperlink.style="display:none;opacity:0;color:transparent;",(document.body||document.documentElement).appendChild(hyperlink),"function"==typeof hyperlink.click?hyperlink.click():(hyperlink.target="_blank",hyperlink.dispatchEvent(new MouseEvent("click",{view:window,bubbles:!0,cancelable:!0}))),URL.revokeObjectURL(hyperlink.href)}function isElectron(){return"undefined"!=typeof window&&"object"==typeof window.process&&"renderer"===window.process.type||(!("undefined"==typeof process||"object"!=typeof process.versions||!process.versions.electron)||"object"==typeof navigator&&"string"==typeof navigator.userAgent&&navigator.userAgent.indexOf("Electron")>=0)}function getTracks(stream,kind){return stream&&stream.getTracks?stream.getTracks().filter(function(t){return t.kind===(kind||"audio")}):[]}function setSrcObject(stream,element){"srcObject"in element?element.srcObject=stream:"mozSrcObject"in element?element.mozSrcObject=stream:element.srcObject=stream}function getSeekableBlob(inputBlob,callback){if("undefined"==typeof EBML)throw new Error("Please link: https://cdn.webrtc-experiment.com/EBML.js");var reader=new EBML.Reader,decoder=new EBML.Decoder,tools=EBML.tools,fileReader=new FileReader;fileReader.onload=function(e){var ebmlElms=decoder.decode(this.result);ebmlElms.forEach(function(element){reader.read(element)}),reader.stop();var refinedMetadataBuf=tools.makeMetadataSeekable(reader.metadatas,reader.duration,reader.cues),body=this.result.slice(reader.metadataSize),newBlob=new Blob([refinedMetadataBuf,body],{type:"video/webm"});callback(newBlob)},fileReader.readAsArrayBuffer(inputBlob)}function isMediaRecorderCompatible(){if(isFirefox||isSafari||isEdge)return!0;var verOffset,ix,nAgt=(navigator.appVersion,navigator.userAgent),fullVersion=""+parseFloat(navigator.appVersion),majorVersion=parseInt(navigator.appVersion,10);return(isChrome||isOpera)&&(verOffset=nAgt.indexOf("Chrome"),fullVersion=nAgt.substring(verOffset+7)),(ix=fullVersion.indexOf(";"))!==-1&&(fullVersion=fullVersion.substring(0,ix)),(ix=fullVersion.indexOf(" "))!==-1&&(fullVersion=fullVersion.substring(0,ix)),majorVersion=parseInt(""+fullVersion,10),isNaN(majorVersion)&&(fullVersion=""+parseFloat(navigator.appVersion),majorVersion=parseInt(navigator.appVersion,10)),majorVersion>=49}function MediaStreamRecorder(mediaStream,config){function updateTimeStamp(){self.timestamps.push((new Date).getTime()),"function"==typeof config.onTimeStamp&&config.onTimeStamp(self.timestamps[self.timestamps.length-1],self.timestamps)}function getMimeType(secondObject){return mediaRecorder&&mediaRecorder.mimeType?mediaRecorder.mimeType:secondObject.mimeType||"video/webm"}function clearRecordedDataCB(){arrayOfBlobs=[],mediaRecorder=null,self.timestamps=[]}function isMediaStreamActive(){if("active"in mediaStream){if(!mediaStream.active)return!1}else if("ended"in mediaStream&&mediaStream.ended)return!1;return!0}var self=this;if("undefined"==typeof mediaStream)throw'First argument "MediaStream" is required.';if("undefined"==typeof MediaRecorder)throw"Your browser does not supports Media Recorder API. Please try other modules e.g. WhammyRecorder or StereoAudioRecorder.";if(config=config||{mimeType:"video/webm"},"audio"===config.type){if(getTracks(mediaStream,"video").length&&getTracks(mediaStream,"audio").length){var stream;navigator.mozGetUserMedia?(stream=new MediaStream,stream.addTrack(getTracks(mediaStream,"audio")[0])):stream=new MediaStream(getTracks(mediaStream,"audio")),mediaStream=stream}config.mimeType&&config.mimeType.toString().toLowerCase().indexOf("audio")!==-1||(config.mimeType=isChrome?"audio/webm":"audio/ogg"),config.mimeType&&"audio/ogg"!==config.mimeType.toString().toLowerCase()&&navigator.mozGetUserMedia&&(config.mimeType="audio/ogg")}var arrayOfBlobs=[];this.getArrayOfBlobs=function(){return arrayOfBlobs},this.record=function(){self.blob=null,self.clearRecordedData(),self.timestamps=[],allStates=[],arrayOfBlobs=[];var recorderHints=config;config.disableLogs||console.log("Passing following config over MediaRecorder API.",recorderHints),mediaRecorder&&(mediaRecorder=null),isChrome&&!isMediaRecorderCompatible()&&(recorderHints="video/vp8"),"function"==typeof MediaRecorder.isTypeSupported&&recorderHints.mimeType&&(MediaRecorder.isTypeSupported(recorderHints.mimeType)||(config.disableLogs||console.warn("MediaRecorder API seems unable to record mimeType:",recorderHints.mimeType),recorderHints.mimeType="audio"===config.type?"audio/webm":"video/webm"));try{mediaRecorder=new MediaRecorder(mediaStream,recorderHints),config.mimeType=recorderHints.mimeType}catch(e){mediaRecorder=new MediaRecorder(mediaStream)}recorderHints.mimeType&&!MediaRecorder.isTypeSupported&&"canRecordMimeType"in mediaRecorder&&mediaRecorder.canRecordMimeType(recorderHints.mimeType)===!1&&(config.disableLogs||console.warn("MediaRecorder API seems unable to record mimeType:",recorderHints.mimeType)),mediaRecorder.ondataavailable=function(e){if(e.data&&allStates.push("ondataavailable: "+bytesToSize(e.data.size)),"number"!=typeof config.timeSlice){if(!e.data||!e.data.size||e.data.size<100||self.blob)return void(self.recordingCallback&&(self.recordingCallback(new Blob([],{type:getMimeType(recorderHints)})),self.recordingCallback=null));self.blob=config.getNativeBlob?e.data:new Blob([e.data],{type:getMimeType(recorderHints)}),self.recordingCallback&&(self.recordingCallback(self.blob),self.recordingCallback=null)}else if(e.data&&e.data.size&&e.data.size>100&&(arrayOfBlobs.push(e.data),updateTimeStamp(),"function"==typeof config.ondataavailable)){var blob=config.getNativeBlob?e.data:new Blob([e.data],{type:getMimeType(recorderHints)});config.ondataavailable(blob)}},mediaRecorder.onstart=function(){allStates.push("started")},mediaRecorder.onpause=function(){allStates.push("paused")},mediaRecorder.onresume=function(){allStates.push("resumed")},mediaRecorder.onstop=function(){allStates.push("stopped")},mediaRecorder.onerror=function(error){error&&(error.name||(error.name="UnknownError"),allStates.push("error: "+error),config.disableLogs||(error.name.toString().toLowerCase().indexOf("invalidstate")!==-1?console.error("The MediaRecorder is not in a state in which the proposed operation is allowed to be executed.",error):error.name.toString().toLowerCase().indexOf("notsupported")!==-1?console.error("MIME type (",recorderHints.mimeType,") is not supported.",error):error.name.toString().toLowerCase().indexOf("security")!==-1?console.error("MediaRecorder security error",error):"OutOfMemory"===error.name?console.error("The UA has exhaused the available memory. User agents SHOULD provide as much additional information as possible in the message attribute.",error):"IllegalStreamModification"===error.name?console.error("A modification to the stream has occurred that makes it impossible to continue recording. An example would be the addition of a Track while recording is occurring. User agents SHOULD provide as much additional information as possible in the message attribute.",error):"OtherRecordingError"===error.name?console.error("Used for an fatal error other than those listed above. User agents SHOULD provide as much additional information as possible in the message attribute.",error):"GenericError"===error.name?console.error("The UA cannot provide the codec or recording option that has been requested.",error):console.error("MediaRecorder Error",error)),function(looper){return!self.manuallyStopped&&mediaRecorder&&"inactive"===mediaRecorder.state?(delete config.timeslice,void mediaRecorder.start(6e5)):void setTimeout(looper,1e3)}(),"inactive"!==mediaRecorder.state&&"stopped"!==mediaRecorder.state&&mediaRecorder.stop())},"number"==typeof config.timeSlice?(updateTimeStamp(),mediaRecorder.start(config.timeSlice)):mediaRecorder.start(36e5),config.initCallback&&config.initCallback()},this.timestamps=[],this.stop=function(callback){callback=callback||function(){},self.manuallyStopped=!0,mediaRecorder&&(this.recordingCallback=callback,"recording"===mediaRecorder.state&&mediaRecorder.stop(),"number"==typeof config.timeSlice&&setTimeout(function(){self.blob=new Blob(arrayOfBlobs,{type:getMimeType(config)}),self.recordingCallback(self.blob)},100))},this.pause=function(){mediaRecorder&&"recording"===mediaRecorder.state&&mediaRecorder.pause()},this.resume=function(){mediaRecorder&&"paused"===mediaRecorder.state&&mediaRecorder.resume()},this.clearRecordedData=function(){mediaRecorder&&"recording"===mediaRecorder.state&&self.stop(clearRecordedDataCB),clearRecordedDataCB()};var mediaRecorder;this.getInternalRecorder=function(){return mediaRecorder},this.blob=null,this.getState=function(){return mediaRecorder?mediaRecorder.state||"inactive":"inactive"};var allStates=[];this.getAllStates=function(){return allStates},"undefined"==typeof config.checkForInactiveTracks&&(config.checkForInactiveTracks=!1);var self=this;!function looper(){if(mediaRecorder&&config.checkForInactiveTracks!==!1)return isMediaStreamActive()===!1?(config.disableLogs||console.log("MediaStream seems stopped."),void self.stop()):void setTimeout(looper,1e3)}(),this.name="MediaStreamRecorder",this.toString=function(){return this.name}}function StereoAudioRecorder(mediaStream,config){function isMediaStreamActive(){if(config.checkForInactiveTracks===!1)return!0;if("active"in mediaStream){if(!mediaStream.active)return!1}else if("ended"in mediaStream&&mediaStream.ended)return!1;return!0}function mergeLeftRightBuffers(config,callback){function mergeAudioBuffers(config,cb){function interpolateArray(data,newSampleRate,oldSampleRate){var fitCount=Math.round(data.length*(newSampleRate/oldSampleRate)),newData=[],springFactor=Number((data.length-1)/(fitCount-1));newData[0]=data[0];for(var i=1;i<fitCount-1;i++){var tmp=i*springFactor,before=Number(Math.floor(tmp)).toFixed(),after=Number(Math.ceil(tmp)).toFixed(),atPoint=tmp-before;newData[i]=linearInterpolate(data[before],data[after],atPoint)}return newData[fitCount-1]=data[data.length-1],newData}function linearInterpolate(before,after,atPoint){return before+(after-before)*atPoint}function mergeBuffers(channelBuffer,rLength){for(var result=new Float64Array(rLength),offset=0,lng=channelBuffer.length,i=0;i<lng;i++){var buffer=channelBuffer[i];result.set(buffer,offset),offset+=buffer.length}return result}function interleave(leftChannel,rightChannel){for(var length=leftChannel.length+rightChannel.length,result=new Float64Array(length),inputIndex=0,index=0;index<length;)result[index++]=leftChannel[inputIndex],result[index++]=rightChannel[inputIndex],inputIndex++;return result}function writeUTFBytes(view,offset,string){for(var lng=string.length,i=0;i<lng;i++)view.setUint8(offset+i,string.charCodeAt(i))}var numberOfAudioChannels=config.numberOfAudioChannels,leftBuffers=config.leftBuffers.slice(0),rightBuffers=config.rightBuffers.slice(0),sampleRate=config.sampleRate,internalInterleavedLength=config.internalInterleavedLength,desiredSampRate=config.desiredSampRate;2===numberOfAudioChannels&&(leftBuffers=mergeBuffers(leftBuffers,internalInterleavedLength),rightBuffers=mergeBuffers(rightBuffers,internalInterleavedLength),desiredSampRate&&(leftBuffers=interpolateArray(leftBuffers,desiredSampRate,sampleRate),rightBuffers=interpolateArray(rightBuffers,desiredSampRate,sampleRate))),1===numberOfAudioChannels&&(leftBuffers=mergeBuffers(leftBuffers,internalInterleavedLength),desiredSampRate&&(leftBuffers=interpolateArray(leftBuffers,desiredSampRate,sampleRate))),desiredSampRate&&(sampleRate=desiredSampRate);var interleaved;2===numberOfAudioChannels&&(interleaved=interleave(leftBuffers,rightBuffers)),1===numberOfAudioChannels&&(interleaved=leftBuffers);var interleavedLength=interleaved.length,resultingBufferLength=44+2*interleavedLength,buffer=new ArrayBuffer(resultingBufferLength),view=new DataView(buffer);writeUTFBytes(view,0,"RIFF"),view.setUint32(4,36+2*interleavedLength,!0),writeUTFBytes(view,8,"WAVE"),writeUTFBytes(view,12,"fmt "),view.setUint32(16,16,!0),view.setUint16(20,1,!0),view.setUint16(22,numberOfAudioChannels,!0),view.setUint32(24,sampleRate,!0),view.setUint32(28,2*sampleRate,!0),view.setUint16(32,2*numberOfAudioChannels,!0),view.setUint16(34,16,!0),writeUTFBytes(view,36,"data"),view.setUint32(40,2*interleavedLength,!0);for(var lng=interleavedLength,index=44,volume=1,i=0;i<lng;i++)view.setInt16(index,interleaved[i]*(32767*volume),!0),index+=2;return cb?cb({buffer:buffer,view:view}):void postMessage({buffer:buffer,view:view})}if(config.noWorker)return void mergeAudioBuffers(config,function(data){callback(data.buffer,data.view)});var webWorker=processInWebWorker(mergeAudioBuffers);webWorker.onmessage=function(event){callback(event.data.buffer,event.data.view),URL.revokeObjectURL(webWorker.workerURL),webWorker.terminate()},webWorker.postMessage(config)}function processInWebWorker(_function){var workerURL=URL.createObjectURL(new Blob([_function.toString(),";this.onmessage =  function (eee) {"+_function.name+"(eee.data);}"],{type:"application/javascript"})),worker=new Worker(workerURL);return worker.workerURL=workerURL,worker}function resetVariables(){leftchannel=[],rightchannel=[],recordingLength=0,isAudioProcessStarted=!1,recording=!1,isPaused=!1,context=null,self.leftchannel=leftchannel,self.rightchannel=rightchannel,self.numberOfAudioChannels=numberOfAudioChannels,self.desiredSampRate=desiredSampRate,self.sampleRate=sampleRate,self.recordingLength=recordingLength,intervalsBasedBuffers={left:[],right:[],recordingLength:0}}function clearRecordedDataCB(){jsAudioNode&&(jsAudioNode.onaudioprocess=null,jsAudioNode.disconnect(),jsAudioNode=null),audioInput&&(audioInput.disconnect(),audioInput=null),resetVariables()}function onAudioProcessDataAvailable(e){if(!isPaused){if(isMediaStreamActive()===!1&&(config.disableLogs||console.log("MediaStream seems stopped."),jsAudioNode.disconnect(),recording=!1),!recording)return void(audioInput&&(audioInput.disconnect(),audioInput=null));isAudioProcessStarted||(isAudioProcessStarted=!0,config.onAudioProcessStarted&&config.onAudioProcessStarted(),config.initCallback&&config.initCallback());var left=e.inputBuffer.getChannelData(0),chLeft=new Float32Array(left);if(leftchannel.push(chLeft),2===numberOfAudioChannels){var right=e.inputBuffer.getChannelData(1),chRight=new Float32Array(right);rightchannel.push(chRight)}recordingLength+=bufferSize,self.recordingLength=recordingLength,"undefined"!=typeof config.timeSlice&&(intervalsBasedBuffers.recordingLength+=bufferSize,intervalsBasedBuffers.left.push(chLeft),2===numberOfAudioChannels&&intervalsBasedBuffers.right.push(chRight))}}function looper(){recording&&"function"==typeof config.ondataavailable&&"undefined"!=typeof config.timeSlice&&(intervalsBasedBuffers.left.length?(mergeLeftRightBuffers({desiredSampRate:desiredSampRate,sampleRate:sampleRate,numberOfAudioChannels:numberOfAudioChannels,internalInterleavedLength:intervalsBasedBuffers.recordingLength,leftBuffers:intervalsBasedBuffers.left,rightBuffers:1===numberOfAudioChannels?[]:intervalsBasedBuffers.right},function(buffer,view){var blob=new Blob([view],{type:"audio/wav"});config.ondataavailable(blob),setTimeout(looper,config.timeSlice)}),intervalsBasedBuffers={left:[],right:[],recordingLength:0}):setTimeout(looper,config.timeSlice))}if(!getTracks(mediaStream,"audio").length)throw"Your stream has no audio tracks.";config=config||{};var jsAudioNode,self=this,leftchannel=[],rightchannel=[],recording=!1,recordingLength=0,numberOfAudioChannels=2,desiredSampRate=config.desiredSampRate;if(config.leftChannel===!0&&(numberOfAudioChannels=1),1===config.numberOfAudioChannels&&(numberOfAudioChannels=1),(!numberOfAudioChannels||numberOfAudioChannels<1)&&(numberOfAudioChannels=2),config.disableLogs||console.log("StereoAudioRecorder is set to record number of channels: "+numberOfAudioChannels),"undefined"==typeof config.checkForInactiveTracks&&(config.checkForInactiveTracks=!0),this.record=function(){if(isMediaStreamActive()===!1)throw"Please make sure MediaStream is active.";resetVariables(),isAudioProcessStarted=isPaused=!1,recording=!0,"undefined"!=typeof config.timeSlice&&looper();
+},this.stop=function(callback){callback=callback||function(){},recording=!1,mergeLeftRightBuffers({desiredSampRate:desiredSampRate,sampleRate:sampleRate,numberOfAudioChannels:numberOfAudioChannels,internalInterleavedLength:recordingLength,leftBuffers:leftchannel,rightBuffers:1===numberOfAudioChannels?[]:rightchannel,noWorker:config.noWorker},function(buffer,view){self.blob=new Blob([view],{type:"audio/wav"}),self.buffer=new ArrayBuffer(view.buffer.byteLength),self.view=view,self.sampleRate=desiredSampRate||sampleRate,self.bufferSize=bufferSize,self.length=recordingLength,isAudioProcessStarted=!1,callback&&callback(self.blob)})},"undefined"==typeof Storage)var Storage={AudioContextConstructor:null,AudioContext:window.AudioContext||window.webkitAudioContext};Storage.AudioContextConstructor||(Storage.AudioContextConstructor=new Storage.AudioContext);var context=Storage.AudioContextConstructor,audioInput=context.createMediaStreamSource(mediaStream),legalBufferValues=[0,256,512,1024,2048,4096,8192,16384],bufferSize="undefined"==typeof config.bufferSize?4096:config.bufferSize;if(legalBufferValues.indexOf(bufferSize)===-1&&(config.disableLogs||console.log("Legal values for buffer-size are "+JSON.stringify(legalBufferValues,null,"\t"))),context.createJavaScriptNode)jsAudioNode=context.createJavaScriptNode(bufferSize,numberOfAudioChannels,numberOfAudioChannels);else{if(!context.createScriptProcessor)throw"WebAudio API has no support on this browser.";jsAudioNode=context.createScriptProcessor(bufferSize,numberOfAudioChannels,numberOfAudioChannels)}audioInput.connect(jsAudioNode),config.bufferSize||(bufferSize=jsAudioNode.bufferSize);var sampleRate="undefined"!=typeof config.sampleRate?config.sampleRate:context.sampleRate||44100;(sampleRate<22050||sampleRate>96e3)&&(config.disableLogs||console.log("sample-rate must be under range 22050 and 96000.")),config.disableLogs||config.desiredSampRate&&console.log("Desired sample-rate: "+config.desiredSampRate);var isPaused=!1;this.pause=function(){isPaused=!0},this.resume=function(){if(isMediaStreamActive()===!1)throw"Please make sure MediaStream is active.";return recording?void(isPaused=!1):(config.disableLogs||console.log("Seems recording has been restarted."),void this.record())},this.clearRecordedData=function(){config.checkForInactiveTracks=!1,recording&&this.stop(clearRecordedDataCB),clearRecordedDataCB()},this.name="StereoAudioRecorder",this.toString=function(){return this.name};var isAudioProcessStarted=!1;jsAudioNode.onaudioprocess=onAudioProcessDataAvailable,context.createMediaStreamDestination?jsAudioNode.connect(context.createMediaStreamDestination()):jsAudioNode.connect(context.destination),this.leftchannel=leftchannel,this.rightchannel=rightchannel,this.numberOfAudioChannels=numberOfAudioChannels,this.desiredSampRate=desiredSampRate,this.sampleRate=sampleRate,self.recordingLength=recordingLength;var intervalsBasedBuffers={left:[],right:[],recordingLength:0}}function CanvasRecorder(htmlElement,config){function clearRecordedDataCB(){whammy.frames=[],isRecording=!1,isPausedRecording=!1}function cloneCanvas(){var newCanvas=document.createElement("canvas"),context=newCanvas.getContext("2d");return newCanvas.width=htmlElement.width,newCanvas.height=htmlElement.height,context.drawImage(htmlElement,0,0),newCanvas}function drawCanvasFrame(){if(isPausedRecording)return lastTime=(new Date).getTime(),setTimeout(drawCanvasFrame,500);if("canvas"===htmlElement.nodeName.toLowerCase()){var duration=(new Date).getTime()-lastTime;return lastTime=(new Date).getTime(),whammy.frames.push({image:cloneCanvas(),duration:duration}),void(isRecording&&setTimeout(drawCanvasFrame,config.frameInterval))}html2canvas(htmlElement,{grabMouse:"undefined"==typeof config.showMousePointer||config.showMousePointer,onrendered:function(canvas){var duration=(new Date).getTime()-lastTime;return duration?(lastTime=(new Date).getTime(),whammy.frames.push({image:canvas.toDataURL("image/webp",1),duration:duration}),void(isRecording&&setTimeout(drawCanvasFrame,config.frameInterval))):setTimeout(drawCanvasFrame,config.frameInterval)}})}if("undefined"==typeof html2canvas)throw"Please link: https://cdn.webrtc-experiment.com/screenshot.js";config=config||{},config.frameInterval||(config.frameInterval=10);var isCanvasSupportsStreamCapturing=!1;["captureStream","mozCaptureStream","webkitCaptureStream"].forEach(function(item){item in document.createElement("canvas")&&(isCanvasSupportsStreamCapturing=!0)});var _isChrome=!(!window.webkitRTCPeerConnection&&!window.webkitGetUserMedia||!window.chrome),chromeVersion=50,matchArray=navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);_isChrome&&matchArray&&matchArray[2]&&(chromeVersion=parseInt(matchArray[2],10)),_isChrome&&chromeVersion<52&&(isCanvasSupportsStreamCapturing=!1),config.useWhammyRecorder&&(isCanvasSupportsStreamCapturing=!1);var globalCanvas,mediaStreamRecorder;if(isCanvasSupportsStreamCapturing)if(config.disableLogs||console.log("Your browser supports both MediRecorder API and canvas.captureStream!"),htmlElement instanceof HTMLCanvasElement)globalCanvas=htmlElement;else{if(!(htmlElement instanceof CanvasRenderingContext2D))throw"Please pass either HTMLCanvasElement or CanvasRenderingContext2D.";globalCanvas=htmlElement.canvas}else navigator.mozGetUserMedia&&(config.disableLogs||console.error("Canvas recording is NOT supported in Firefox."));var isRecording;this.record=function(){if(isRecording=!0,isCanvasSupportsStreamCapturing&&!config.useWhammyRecorder){var canvasMediaStream;"captureStream"in globalCanvas?canvasMediaStream=globalCanvas.captureStream(25):"mozCaptureStream"in globalCanvas?canvasMediaStream=globalCanvas.mozCaptureStream(25):"webkitCaptureStream"in globalCanvas&&(canvasMediaStream=globalCanvas.webkitCaptureStream(25));try{var mdStream=new MediaStream;mdStream.addTrack(getTracks(canvasMediaStream,"video")[0]),canvasMediaStream=mdStream}catch(e){}if(!canvasMediaStream)throw"captureStream API are NOT available.";mediaStreamRecorder=new MediaStreamRecorder(canvasMediaStream,{mimeType:config.mimeType||"video/webm"}),mediaStreamRecorder.record()}else whammy.frames=[],lastTime=(new Date).getTime(),drawCanvasFrame();config.initCallback&&config.initCallback()},this.getWebPImages=function(callback){if("canvas"!==htmlElement.nodeName.toLowerCase())return void callback();var framesLength=whammy.frames.length;whammy.frames.forEach(function(frame,idx){var framesRemaining=framesLength-idx;config.disableLogs||console.log(framesRemaining+"/"+framesLength+" frames remaining"),config.onEncodingCallback&&config.onEncodingCallback(framesRemaining,framesLength);var webp=frame.image.toDataURL("image/webp",1);whammy.frames[idx].image=webp}),config.disableLogs||console.log("Generating WebM"),callback()},this.stop=function(callback){isRecording=!1;var that=this;return isCanvasSupportsStreamCapturing&&mediaStreamRecorder?void mediaStreamRecorder.stop(callback):void this.getWebPImages(function(){whammy.compile(function(blob){config.disableLogs||console.log("Recording finished!"),that.blob=blob,that.blob.forEach&&(that.blob=new Blob([],{type:"video/webm"})),callback&&callback(that.blob),whammy.frames=[]})})};var isPausedRecording=!1;this.pause=function(){if(isPausedRecording=!0,mediaStreamRecorder instanceof MediaStreamRecorder)return void mediaStreamRecorder.pause()},this.resume=function(){return isPausedRecording=!1,mediaStreamRecorder instanceof MediaStreamRecorder?void mediaStreamRecorder.resume():void(isRecording||this.record())},this.clearRecordedData=function(){isRecording&&this.stop(clearRecordedDataCB),clearRecordedDataCB()},this.name="CanvasRecorder",this.toString=function(){return this.name};var lastTime=(new Date).getTime(),whammy=new Whammy.Video(100)}function WhammyRecorder(mediaStream,config){function drawFrames(frameInterval){frameInterval="undefined"!=typeof frameInterval?frameInterval:10;var duration=(new Date).getTime()-lastTime;return duration?isPausedRecording?(lastTime=(new Date).getTime(),setTimeout(drawFrames,100)):(lastTime=(new Date).getTime(),video.paused&&video.play(),context.drawImage(video,0,0,canvas.width,canvas.height),whammy.frames.push({duration:duration,image:canvas.toDataURL("image/webp")}),void(isStopDrawing||setTimeout(drawFrames,frameInterval,frameInterval))):setTimeout(drawFrames,frameInterval,frameInterval)}function asyncLoop(o){var i=-1,length=o.length;!function loop(){return i++,i===length?void o.callback():void setTimeout(function(){o.functionToLoop(loop,i)},1)}()}function dropBlackFrames(_frames,_framesToCheck,_pixTolerance,_frameTolerance,callback){var localCanvas=document.createElement("canvas");localCanvas.width=canvas.width,localCanvas.height=canvas.height;var context2d=localCanvas.getContext("2d"),resultFrames=[],checkUntilNotBlack=_framesToCheck===-1,endCheckFrame=_framesToCheck&&_framesToCheck>0&&_framesToCheck<=_frames.length?_framesToCheck:_frames.length,sampleColor={r:0,g:0,b:0},maxColorDifference=Math.sqrt(Math.pow(255,2)+Math.pow(255,2)+Math.pow(255,2)),pixTolerance=_pixTolerance&&_pixTolerance>=0&&_pixTolerance<=1?_pixTolerance:0,frameTolerance=_frameTolerance&&_frameTolerance>=0&&_frameTolerance<=1?_frameTolerance:0,doNotCheckNext=!1;asyncLoop({length:endCheckFrame,functionToLoop:function(loop,f){var matchPixCount,endPixCheck,maxPixCount,finishImage=function(){!doNotCheckNext&&maxPixCount-matchPixCount<=maxPixCount*frameTolerance||(checkUntilNotBlack&&(doNotCheckNext=!0),resultFrames.push(_frames[f])),loop()};if(doNotCheckNext)finishImage();else{var image=new Image;image.onload=function(){context2d.drawImage(image,0,0,canvas.width,canvas.height);var imageData=context2d.getImageData(0,0,canvas.width,canvas.height);matchPixCount=0,endPixCheck=imageData.data.length,maxPixCount=imageData.data.length/4;for(var pix=0;pix<endPixCheck;pix+=4){var currentColor={r:imageData.data[pix],g:imageData.data[pix+1],b:imageData.data[pix+2]},colorDifference=Math.sqrt(Math.pow(currentColor.r-sampleColor.r,2)+Math.pow(currentColor.g-sampleColor.g,2)+Math.pow(currentColor.b-sampleColor.b,2));colorDifference<=maxColorDifference*pixTolerance&&matchPixCount++}finishImage()},image.src=_frames[f].image}},callback:function(){resultFrames=resultFrames.concat(_frames.slice(endCheckFrame)),resultFrames.length<=0&&resultFrames.push(_frames[_frames.length-1]),callback(resultFrames)}})}function clearRecordedDataCB(){whammy.frames=[],isStopDrawing=!0,isPausedRecording=!1}config=config||{},config.frameInterval||(config.frameInterval=10),config.disableLogs||console.log("Using frames-interval:",config.frameInterval),this.record=function(){config.width||(config.width=320),config.height||(config.height=240),config.video||(config.video={width:config.width,height:config.height}),config.canvas||(config.canvas={width:config.width,height:config.height}),canvas.width=config.canvas.width||320,canvas.height=config.canvas.height||240,context=canvas.getContext("2d"),config.video&&config.video instanceof HTMLVideoElement?(video=config.video.cloneNode(),config.initCallback&&config.initCallback()):(video=document.createElement("video"),setSrcObject(mediaStream,video),video.onloadedmetadata=function(){config.initCallback&&config.initCallback()},video.width=config.video.width,video.height=config.video.height),video.muted=!0,video.play(),lastTime=(new Date).getTime(),whammy=new Whammy.Video,config.disableLogs||(console.log("canvas resolutions",canvas.width,"*",canvas.height),console.log("video width/height",video.width||canvas.width,"*",video.height||canvas.height)),drawFrames(config.frameInterval)};var isStopDrawing=!1;this.stop=function(callback){callback=callback||function(){},isStopDrawing=!0;var _this=this;setTimeout(function(){dropBlackFrames(whammy.frames,-1,null,null,function(frames){whammy.frames=frames,config.advertisement&&config.advertisement.length&&(whammy.frames=config.advertisement.concat(whammy.frames)),whammy.compile(function(blob){_this.blob=blob,_this.blob.forEach&&(_this.blob=new Blob([],{type:"video/webm"})),callback&&callback(_this.blob)})})},10)};var isPausedRecording=!1;this.pause=function(){isPausedRecording=!0},this.resume=function(){isPausedRecording=!1,isStopDrawing&&this.record()},this.clearRecordedData=function(){isStopDrawing||this.stop(clearRecordedDataCB),clearRecordedDataCB()},this.name="WhammyRecorder",this.toString=function(){return this.name};var video,lastTime,whammy,canvas=document.createElement("canvas"),context=canvas.getContext("2d")}function GifRecorder(mediaStream,config){function clearRecordedDataCB(){gifEncoder&&(gifEncoder.stream().bin=[])}if("undefined"==typeof GIFEncoder){var script=document.createElement("script");script.src="https://cdn.webrtc-experiment.com/gif-recorder.js",(document.body||document.documentElement).appendChild(script)}config=config||{};var isHTMLObject=mediaStream instanceof CanvasRenderingContext2D||mediaStream instanceof HTMLCanvasElement;this.record=function(){function drawVideoFrame(time){if(self.clearedRecordedData!==!0){if(isPausedRecording)return setTimeout(function(){drawVideoFrame(time)},100);lastAnimationFrame=requestAnimationFrame(drawVideoFrame),void 0===typeof lastFrameTime&&(lastFrameTime=time),time-lastFrameTime<90||(!isHTMLObject&&video.paused&&video.play(),isHTMLObject||context.drawImage(video,0,0,canvas.width,canvas.height),config.onGifPreview&&config.onGifPreview(canvas.toDataURL("image/png")),gifEncoder.addFrame(context),lastFrameTime=time)}}return"undefined"==typeof GIFEncoder?void setTimeout(self.record,1e3):isLoadedMetaData?(isHTMLObject||(config.width||(config.width=video.offsetWidth||320),config.height||(config.height=video.offsetHeight||240),config.video||(config.video={width:config.width,height:config.height}),config.canvas||(config.canvas={width:config.width,height:config.height}),canvas.width=config.canvas.width||320,canvas.height=config.canvas.height||240,video.width=config.video.width||320,video.height=config.video.height||240),gifEncoder=new GIFEncoder,gifEncoder.setRepeat(0),gifEncoder.setDelay(config.frameRate||200),gifEncoder.setQuality(config.quality||10),gifEncoder.start(),"function"==typeof config.onGifRecordingStarted&&config.onGifRecordingStarted(),startTime=Date.now(),lastAnimationFrame=requestAnimationFrame(drawVideoFrame),void(config.initCallback&&config.initCallback())):void setTimeout(self.record,1e3)},this.stop=function(callback){callback=callback||function(){},lastAnimationFrame&&cancelAnimationFrame(lastAnimationFrame),endTime=Date.now(),this.blob=new Blob([new Uint8Array(gifEncoder.stream().bin)],{type:"image/gif"}),callback(this.blob),gifEncoder.stream().bin=[]};var isPausedRecording=!1;this.pause=function(){isPausedRecording=!0},this.resume=function(){isPausedRecording=!1},this.clearRecordedData=function(){self.clearedRecordedData=!0,clearRecordedDataCB()},this.name="GifRecorder",this.toString=function(){return this.name};var canvas=document.createElement("canvas"),context=canvas.getContext("2d");isHTMLObject&&(mediaStream instanceof CanvasRenderingContext2D?(context=mediaStream,canvas=context.canvas):mediaStream instanceof HTMLCanvasElement&&(context=mediaStream.getContext("2d"),canvas=mediaStream));var isLoadedMetaData=!0;if(!isHTMLObject){var video=document.createElement("video");video.muted=!0,video.autoplay=!0,isLoadedMetaData=!1,video.onloadedmetadata=function(){isLoadedMetaData=!0},setSrcObject(mediaStream,video),video.play()}var startTime,endTime,lastFrameTime,gifEncoder,lastAnimationFrame=null,self=this}function MultiStreamsMixer(arrayOfMediaStreams){function setSrcObject(stream,element){"srcObject"in element?element.srcObject=stream:"mozSrcObject"in element?element.mozSrcObject=stream:element.srcObject=stream}function drawVideosToCanvas(){if(!isStopDrawingFrames){var videosLength=videos.length,fullcanvas=!1,remaining=[];if(videos.forEach(function(video){video.stream||(video.stream={}),video.stream.fullcanvas?fullcanvas=video:remaining.push(video)}),fullcanvas)canvas.width=fullcanvas.stream.width,canvas.height=fullcanvas.stream.height;else if(remaining.length){canvas.width=videosLength>1?2*remaining[0].width:remaining[0].width;var height=1;3!==videosLength&&4!==videosLength||(height=2),5!==videosLength&&6!==videosLength||(height=3),7!==videosLength&&8!==videosLength||(height=4),9!==videosLength&&10!==videosLength||(height=5),canvas.height=remaining[0].height*height}else canvas.width=self.width||360,canvas.height=self.height||240;fullcanvas&&fullcanvas instanceof HTMLVideoElement&&drawImage(fullcanvas),remaining.forEach(function(video,idx){drawImage(video,idx)}),setTimeout(drawVideosToCanvas,self.frameInterval)}}function drawImage(video,idx){if(!isStopDrawingFrames){var x=0,y=0,width=video.width,height=video.height;1===idx&&(x=video.width),2===idx&&(y=video.height),3===idx&&(x=video.width,y=video.height),4===idx&&(y=2*video.height),5===idx&&(x=video.width,y=2*video.height),6===idx&&(y=3*video.height),7===idx&&(x=video.width,y=3*video.height),"undefined"!=typeof video.stream.left&&(x=video.stream.left),"undefined"!=typeof video.stream.top&&(y=video.stream.top),"undefined"!=typeof video.stream.width&&(width=video.stream.width),"undefined"!=typeof video.stream.height&&(height=video.stream.height),context.drawImage(video,x,y,width,height),"function"==typeof video.stream.onRender&&video.stream.onRender(context,x,y,width,height,idx)}}function getMixedStream(){isStopDrawingFrames=!1;var mixedVideoStream=getMixedVideoStream(),mixedAudioStream=getMixedAudioStream();mixedAudioStream&&mixedAudioStream.getTracks().filter(function(t){return"audio"===t.kind}).forEach(function(track){mixedVideoStream.addTrack(track)});var fullcanvas;return arrayOfMediaStreams.forEach(function(stream){stream.fullcanvas&&(fullcanvas=!0)}),mixedVideoStream}function getMixedVideoStream(){resetVideoStreams();var capturedStream;"captureStream"in canvas?capturedStream=canvas.captureStream():"mozCaptureStream"in canvas?capturedStream=canvas.mozCaptureStream():self.disableLogs||console.error("Upgrade to latest Chrome or otherwise enable this flag: chrome://flags/#enable-experimental-web-platform-features");var videoStream=new MediaStream;return capturedStream.getTracks().filter(function(t){return"video"===t.kind}).forEach(function(track){videoStream.addTrack(track)}),canvas.stream=videoStream,videoStream}function getMixedAudioStream(){Storage.AudioContextConstructor||(Storage.AudioContextConstructor=new Storage.AudioContext),self.audioContext=Storage.AudioContextConstructor,self.audioSources=[],self.useGainNode===!0&&(self.gainNode=self.audioContext.createGain(),self.gainNode.connect(self.audioContext.destination),self.gainNode.gain.value=0);var audioTracksLength=0;if(arrayOfMediaStreams.forEach(function(stream){if(stream.getTracks().filter(function(t){return"audio"===t.kind}).length){audioTracksLength++;var audioSource=self.audioContext.createMediaStreamSource(stream);self.useGainNode===!0&&audioSource.connect(self.gainNode),self.audioSources.push(audioSource)}}),audioTracksLength)return self.audioDestination=self.audioContext.createMediaStreamDestination(),self.audioSources.forEach(function(audioSource){audioSource.connect(self.audioDestination)}),self.audioDestination.stream}function getVideo(stream){var video=document.createElement("video");return setSrcObject(stream,video),video.muted=!0,video.volume=0,video.width=stream.width||self.width||360,video.height=stream.height||self.height||240,video.play(),video}function resetVideoStreams(streams){videos=[],streams=streams||arrayOfMediaStreams,streams.forEach(function(stream){if(stream.getTracks().filter(function(t){return"video"===t.kind}).length){var video=getVideo(stream);video.stream=stream,videos.push(video)}})}var videos=[],isStopDrawingFrames=!1,canvas=document.createElement("canvas"),context=canvas.getContext("2d");canvas.style="opacity:0;position:absolute;z-index:-1;top: -100000000;left:-1000000000; margin-top:-1000000000;margin-left:-1000000000;",(document.body||document.documentElement).appendChild(canvas),this.disableLogs=!1,this.frameInterval=10,this.width=360,this.height=240,this.useGainNode=!0;var self=this,AudioContext=window.AudioContext;"undefined"==typeof AudioContext&&("undefined"!=typeof webkitAudioContext&&(AudioContext=webkitAudioContext),"undefined"!=typeof mozAudioContext&&(AudioContext=mozAudioContext));var URL=window.URL;"undefined"==typeof URL&&"undefined"!=typeof webkitURL&&(URL=webkitURL),"undefined"!=typeof navigator&&"undefined"==typeof navigator.getUserMedia&&("undefined"!=typeof navigator.webkitGetUserMedia&&(navigator.getUserMedia=navigator.webkitGetUserMedia),"undefined"!=typeof navigator.mozGetUserMedia&&(navigator.getUserMedia=navigator.mozGetUserMedia));var MediaStream=window.MediaStream;"undefined"==typeof MediaStream&&"undefined"!=typeof webkitMediaStream&&(MediaStream=webkitMediaStream),"undefined"!=typeof MediaStream&&"undefined"==typeof MediaStream.prototype.stop&&(MediaStream.prototype.stop=function(){this.getTracks().forEach(function(track){track.stop()})});var Storage={};"undefined"!=typeof AudioContext?Storage.AudioContext=AudioContext:"undefined"!=typeof webkitAudioContext&&(Storage.AudioContext=webkitAudioContext),this.startDrawingFrames=function(){drawVideosToCanvas()},this.appendStreams=function(streams){if(!streams)throw"First parameter is required.";streams instanceof Array||(streams=[streams]),arrayOfMediaStreams.concat(streams),streams.forEach(function(stream){if(stream.getTracks().filter(function(t){return"video"===t.kind}).length){var video=getVideo(stream);video.stream=stream,videos.push(video)}if(stream.getTracks().filter(function(t){return"audio"===t.kind}).length&&self.audioContext){var audioSource=self.audioContext.createMediaStreamSource(stream);audioSource.connect(self.audioDestination),self.audioSources.push(audioSource)}})},this.releaseStreams=function(){videos=[],isStopDrawingFrames=!0,self.gainNode&&(self.gainNode.disconnect(),self.gainNode=null),self.audioSources.length&&(self.audioSources.forEach(function(source){source.disconnect()}),self.audioSources=[]),self.audioDestination&&(self.audioDestination.disconnect(),self.audioDestination=null),self.audioContext&&self.audioContext.close(),self.audioContext=null,context.clearRect(0,0,canvas.width,canvas.height),canvas.stream&&(canvas.stream.stop(),canvas.stream=null)},this.resetVideoStreams=function(streams){!streams||streams instanceof Array||(streams=[streams]),resetVideoStreams(streams)},this.name="MultiStreamsMixer",this.toString=function(){return this.name},this.getMixedStream=getMixedStream}function MultiStreamRecorder(arrayOfMediaStreams,options){function getAllVideoTracks(){var tracks=[];return arrayOfMediaStreams.forEach(function(stream){getTracks(stream,"video").forEach(function(track){tracks.push(track)})}),tracks}arrayOfMediaStreams=arrayOfMediaStreams||[];var mixer,mediaRecorder,self=this;options=options||{mimeType:"video/webm",video:{width:360,height:240}},options.frameInterval||(options.frameInterval=10),options.video||(options.video={}),options.video.width||(options.video.width=360),options.video.height||(options.video.height=240),this.record=function(){mixer=new MultiStreamsMixer(arrayOfMediaStreams),getAllVideoTracks().length&&(mixer.frameInterval=options.frameInterval||10,mixer.width=options.video.width||360,mixer.height=options.video.height||240,mixer.startDrawingFrames()),options.previewStream&&"function"==typeof options.previewStream&&options.previewStream(mixer.getMixedStream()),mediaRecorder=new MediaStreamRecorder(mixer.getMixedStream(),options),mediaRecorder.record()},this.stop=function(callback){mediaRecorder&&mediaRecorder.stop(function(blob){self.blob=blob,callback(blob),self.clearRecordedData()})},this.pause=function(){mediaRecorder&&mediaRecorder.pause()},this.resume=function(){mediaRecorder&&mediaRecorder.resume()},this.clearRecordedData=function(){mediaRecorder&&(mediaRecorder.clearRecordedData(),mediaRecorder=null),mixer&&(mixer.releaseStreams(),mixer=null)},this.addStreams=function(streams){if(!streams)throw"First parameter is required.";streams instanceof Array||(streams=[streams]),arrayOfMediaStreams.concat(streams),mediaRecorder&&mixer&&mixer.appendStreams(streams)},this.resetVideoStreams=function(streams){mixer&&(!streams||streams instanceof Array||(streams=[streams]),mixer.resetVideoStreams(streams))},this.name="MultiStreamRecorder",this.toString=function(){return this.name}}function RecordRTCPromisesHandler(mediaStream,options){if(!this)throw'Use "new RecordRTCPromisesHandler()"';if("undefined"==typeof mediaStream)throw'First argument "MediaStream" is required.';var self=this;self.recordRTC=new RecordRTC(mediaStream,options),this.startRecording=function(){return new Promise(function(resolve,reject){try{self.recordRTC.startRecording(),resolve()}catch(e){reject(e)}})},this.stopRecording=function(){return new Promise(function(resolve,reject){try{self.recordRTC.stopRecording(function(url){return self.blob=self.recordRTC.getBlob(),self.blob&&self.blob.size?void resolve(url):void reject("Empty blob.",self.blob)})}catch(e){reject(e)}})},this.getDataURL=function(callback){return new Promise(function(resolve,reject){try{self.recordRTC.getDataURL(function(dataURL){resolve(dataURL)})}catch(e){reject(e)}})},this.getBlob=function(){return new Promise(function(resolve,reject){try{resolve(self.recordRTC.getBlob())}catch(e){reject(e)}})},this.blob=null}function WebAssemblyRecorder(stream,config){function cameraStream(){return new ReadableStream({start:function(controller){var cvs=document.createElement("canvas"),video=document.createElement("video");video.srcObject=stream,video.onplaying=function(){cvs.width=config.width,cvs.height=config.height;var ctx=cvs.getContext("2d"),frameTimeout=1e3/config.frameRate;setTimeout(function f(){ctx.drawImage(video,0,0),controller.enqueue(ctx.getImageData(0,0,config.width,config.height)),setTimeout(f,frameTimeout)},frameTimeout)},video.play()}})}function startRecording(stream,buffer){if(!config.workerPath&&!buffer)return void fetch("https://unpkg.com/webm-wasm@latest/dist/webm-worker.js").then(function(r){r.arrayBuffer().then(function(buffer){startRecording(stream,buffer)})});if(!config.workerPath&&buffer instanceof ArrayBuffer){var blob=new Blob([buffer],{type:"text/javascript"});config.workerPath=URL.createObjectURL(blob)}config.workerPath||console.error("workerPath parameter is missing."),worker=new Worker(config.workerPath),worker.postMessage(config.webAssemblyPath||"https://unpkg.com/webm-wasm@latest/dist/webm-wasm.wasm"),worker.addEventListener("message",function(event){"READY"===event.data?(worker.postMessage({width:config.width,height:config.height,bitrate:config.bitrate||1200,timebaseDen:config.frameRate||30,realtime:!0}),cameraStream().pipeTo(new WritableStream({write:function(image){worker&&worker.postMessage(image.data.buffer,[image.data.buffer])}}))):event.data&&(isPaused||arrayOfBuffers.push(event.data))})}function terminate(){worker&&(worker.postMessage(null),worker.terminate(),worker=null)}"undefined"!=typeof ReadableStream&&"undefined"!=typeof WritableStream||console.error("Following polyfill is strongly recommended: https://unpkg.com/@mattiasbuelens/web-streams-polyfill/dist/polyfill.min.js"),config=config||{},config.width=config.width||640,config.height=config.height||480,config.frameRate=config.frameRate||30,config.bitrate=config.bitrate||1200;var worker;this.record=function(){arrayOfBuffers=[],isPaused=!1,this.blob=null,startRecording(stream)};var isPaused;this.pause=function(){isPaused=!0},this.resume=function(){isPaused=!1};var arrayOfBuffers=[];this.stop=function(callback){terminate(),this.blob=new Blob(arrayOfBuffers,{type:"video/webm"}),callback(this.blob)},this.blob=null}RecordRTC.version="5.5.2","undefined"!=typeof module&&(module.exports=RecordRTC),"function"==typeof define&&define.amd&&define("RecordRTC",[],function(){return RecordRTC}),RecordRTC.getFromDisk=function(type,callback){if(!callback)throw"callback is mandatory.";console.log("Getting recorded "+("all"===type?"blobs":type+" blob ")+" from disk!"),DiskStorage.Fetch(function(dataURL,_type){"all"!==type&&_type===type+"Blob"&&callback&&callback(dataURL),"all"===type&&callback&&callback(dataURL,_type.replace("Blob",""))})},RecordRTC.writeToDisk=function(options){console.log("Writing recorded blob(s) to disk!"),options=options||{},options.audio&&options.video&&options.gif?options.audio.getDataURL(function(audioDataURL){options.video.getDataURL(function(videoDataURL){options.gif.getDataURL(function(gifDataURL){DiskStorage.Store({audioBlob:audioDataURL,videoBlob:videoDataURL,gifBlob:gifDataURL})})})}):options.audio&&options.video?options.audio.getDataURL(function(audioDataURL){options.video.getDataURL(function(videoDataURL){DiskStorage.Store({audioBlob:audioDataURL,videoBlob:videoDataURL})})}):options.audio&&options.gif?options.audio.getDataURL(function(audioDataURL){options.gif.getDataURL(function(gifDataURL){DiskStorage.Store({audioBlob:audioDataURL,gifBlob:gifDataURL})})}):options.video&&options.gif?options.video.getDataURL(function(videoDataURL){options.gif.getDataURL(function(gifDataURL){DiskStorage.Store({videoBlob:videoDataURL,gifBlob:gifDataURL})})}):options.audio?options.audio.getDataURL(function(audioDataURL){DiskStorage.Store({audioBlob:audioDataURL})}):options.video?options.video.getDataURL(function(videoDataURL){DiskStorage.Store({videoBlob:videoDataURL})}):options.gif&&options.gif.getDataURL(function(gifDataURL){DiskStorage.Store({gifBlob:gifDataURL})})},MRecordRTC.getFromDisk=RecordRTC.getFromDisk,MRecordRTC.writeToDisk=RecordRTC.writeToDisk,"undefined"!=typeof RecordRTC&&(RecordRTC.MRecordRTC=MRecordRTC);var browserFakeUserAgent="Fake/5.0 (FakeOS) AppleWebKit/123 (KHTML, like Gecko) Fake/12.3.4567.89 Fake/123.45";!function(that){that&&"undefined"==typeof window&&"undefined"!=typeof global&&(global.navigator={userAgent:browserFakeUserAgent,getUserMedia:function(){}},global.console||(global.console={}),"undefined"!=typeof global.console.log&&"undefined"!=typeof global.console.error||(global.console.error=global.console.log=global.console.log||function(){console.log(arguments)}),"undefined"==typeof document&&(that.document={},document.createElement=document.captureStream=document.mozCaptureStream=function(){var obj={getContext:function(){return obj},play:function(){},pause:function(){},drawImage:function(){},toDataURL:function(){return""}};return obj},that.HTMLVideoElement=function(){}),"undefined"==typeof location&&(that.location={protocol:"file:",href:"",hash:""}),"undefined"==typeof screen&&(that.screen={width:0,height:0}),"undefined"==typeof URL&&(that.URL={createObjectURL:function(){return""},revokeObjectURL:function(){return""}}),that.window=global)}("undefined"!=typeof global?global:null);var requestAnimationFrame=window.requestAnimationFrame;if("undefined"==typeof requestAnimationFrame)if("undefined"!=typeof webkitRequestAnimationFrame)requestAnimationFrame=webkitRequestAnimationFrame;else if("undefined"!=typeof mozRequestAnimationFrame)requestAnimationFrame=mozRequestAnimationFrame;else if("undefined"!=typeof msRequestAnimationFrame)requestAnimationFrame=msRequestAnimationFrame;else if("undefined"==typeof requestAnimationFrame){var lastTime=0;requestAnimationFrame=function(callback,element){var currTime=(new Date).getTime(),timeToCall=Math.max(0,16-(currTime-lastTime)),id=setTimeout(function(){callback(currTime+timeToCall)},timeToCall);return lastTime=currTime+timeToCall,id}}var cancelAnimationFrame=window.cancelAnimationFrame;"undefined"==typeof cancelAnimationFrame&&("undefined"!=typeof webkitCancelAnimationFrame?cancelAnimationFrame=webkitCancelAnimationFrame:"undefined"!=typeof mozCancelAnimationFrame?cancelAnimationFrame=mozCancelAnimationFrame:"undefined"!=typeof msCancelAnimationFrame?cancelAnimationFrame=msCancelAnimationFrame:"undefined"==typeof cancelAnimationFrame&&(cancelAnimationFrame=function(id){clearTimeout(id)}));var AudioContext=window.AudioContext;"undefined"==typeof AudioContext&&("undefined"!=typeof webkitAudioContext&&(AudioContext=webkitAudioContext),
+"undefined"!=typeof mozAudioContext&&(AudioContext=mozAudioContext));var URL=window.URL;"undefined"==typeof URL&&"undefined"!=typeof webkitURL&&(URL=webkitURL),"undefined"!=typeof navigator&&"undefined"==typeof navigator.getUserMedia&&("undefined"!=typeof navigator.webkitGetUserMedia&&(navigator.getUserMedia=navigator.webkitGetUserMedia),"undefined"!=typeof navigator.mozGetUserMedia&&(navigator.getUserMedia=navigator.mozGetUserMedia));var isEdge=!(navigator.userAgent.indexOf("Edge")===-1||!navigator.msSaveBlob&&!navigator.msSaveOrOpenBlob),isOpera=!!window.opera||navigator.userAgent.indexOf("OPR/")!==-1,isFirefox=navigator.userAgent.toLowerCase().indexOf("firefox")>-1&&"netscape"in window&&/ rv:/.test(navigator.userAgent),isChrome=!isOpera&&!isEdge&&!!navigator.webkitGetUserMedia||isElectron()||navigator.userAgent.toLowerCase().indexOf("chrome/")!==-1,isSafari=/^((?!chrome|android).)*safari/i.test(navigator.userAgent);isSafari&&!isChrome&&navigator.userAgent.indexOf("CriOS")!==-1&&(isSafari=!1,isChrome=!0);var MediaStream=window.MediaStream;"undefined"==typeof MediaStream&&"undefined"!=typeof webkitMediaStream&&(MediaStream=webkitMediaStream),"undefined"!=typeof MediaStream&&"undefined"==typeof MediaStream.prototype.stop&&(MediaStream.prototype.stop=function(){this.getTracks().forEach(function(track){track.stop()})});var Storage={};"undefined"!=typeof AudioContext?Storage.AudioContext=AudioContext:"undefined"!=typeof webkitAudioContext&&(Storage.AudioContext=webkitAudioContext),"undefined"!=typeof RecordRTC&&(RecordRTC.Storage=Storage),"undefined"!=typeof RecordRTC&&(RecordRTC.MediaStreamRecorder=MediaStreamRecorder),"undefined"!=typeof RecordRTC&&(RecordRTC.StereoAudioRecorder=StereoAudioRecorder),"undefined"!=typeof RecordRTC&&(RecordRTC.CanvasRecorder=CanvasRecorder),"undefined"!=typeof RecordRTC&&(RecordRTC.WhammyRecorder=WhammyRecorder);var Whammy=function(){function WhammyVideo(duration){this.frames=[],this.duration=duration||1,this.quality=.8}function processInWebWorker(_function){var blob=URL.createObjectURL(new Blob([_function.toString(),"this.onmessage =  function (eee) {"+_function.name+"(eee.data);}"],{type:"application/javascript"})),worker=new Worker(blob);return URL.revokeObjectURL(blob),worker}function whammyInWebWorker(frames){function ArrayToWebM(frames){var info=checkFrames(frames);if(!info)return[];for(var clusterMaxDuration=3e4,EBML=[{id:440786851,data:[{data:1,id:17030},{data:1,id:17143},{data:4,id:17138},{data:8,id:17139},{data:"webm",id:17026},{data:2,id:17031},{data:2,id:17029}]},{id:408125543,data:[{id:357149030,data:[{data:1e6,id:2807729},{data:"whammy",id:19840},{data:"whammy",id:22337},{data:doubleToString(info.duration),id:17545}]},{id:374648427,data:[{id:174,data:[{data:1,id:215},{data:1,id:29637},{data:0,id:156},{data:"und",id:2274716},{data:"V_VP8",id:134},{data:"VP8",id:2459272},{data:1,id:131},{id:224,data:[{data:info.width,id:176},{data:info.height,id:186}]}]}]}]}],frameNumber=0,clusterTimecode=0;frameNumber<frames.length;){var clusterFrames=[],clusterDuration=0;do clusterFrames.push(frames[frameNumber]),clusterDuration+=frames[frameNumber].duration,frameNumber++;while(frameNumber<frames.length&&clusterDuration<clusterMaxDuration);var clusterCounter=0,cluster={id:524531317,data:getClusterData(clusterTimecode,clusterCounter,clusterFrames)};EBML[1].data.push(cluster),clusterTimecode+=clusterDuration}return generateEBML(EBML)}function getClusterData(clusterTimecode,clusterCounter,clusterFrames){return[{data:clusterTimecode,id:231}].concat(clusterFrames.map(function(webp){var block=makeSimpleBlock({discardable:0,frame:webp.data.slice(4),invisible:0,keyframe:1,lacing:0,trackNum:1,timecode:Math.round(clusterCounter)});return clusterCounter+=webp.duration,{data:block,id:163}}))}function checkFrames(frames){if(!frames[0])return void postMessage({error:"Something went wrong. Maybe WebP format is not supported in the current browser."});for(var width=frames[0].width,height=frames[0].height,duration=frames[0].duration,i=1;i<frames.length;i++)duration+=frames[i].duration;return{duration:duration,width:width,height:height}}function numToBuffer(num){for(var parts=[];num>0;)parts.push(255&num),num>>=8;return new Uint8Array(parts.reverse())}function strToBuffer(str){return new Uint8Array(str.split("").map(function(e){return e.charCodeAt(0)}))}function bitsToBuffer(bits){var data=[],pad=bits.length%8?new Array(9-bits.length%8).join("0"):"";bits=pad+bits;for(var i=0;i<bits.length;i+=8)data.push(parseInt(bits.substr(i,8),2));return new Uint8Array(data)}function generateEBML(json){for(var ebml=[],i=0;i<json.length;i++){var data=json[i].data;"object"==typeof data&&(data=generateEBML(data)),"number"==typeof data&&(data=bitsToBuffer(data.toString(2))),"string"==typeof data&&(data=strToBuffer(data));var len=data.size||data.byteLength||data.length,zeroes=Math.ceil(Math.ceil(Math.log(len)/Math.log(2))/8),sizeToString=len.toString(2),padded=new Array(7*zeroes+7+1-sizeToString.length).join("0")+sizeToString,size=new Array(zeroes).join("0")+"1"+padded;ebml.push(numToBuffer(json[i].id)),ebml.push(bitsToBuffer(size)),ebml.push(data)}return new Blob(ebml,{type:"video/webm"})}function makeSimpleBlock(data){var flags=0;if(data.keyframe&&(flags|=128),data.invisible&&(flags|=8),data.lacing&&(flags|=data.lacing<<1),data.discardable&&(flags|=1),data.trackNum>127)throw"TrackNumber > 127 not supported";var out=[128|data.trackNum,data.timecode>>8,255&data.timecode,flags].map(function(e){return String.fromCharCode(e)}).join("")+data.frame;return out}function parseWebP(riff){for(var VP8=riff.RIFF[0].WEBP[0],frameStart=VP8.indexOf("
*"),i=0,c=[];i<4;i++)c[i]=VP8.charCodeAt(frameStart+3+i);var width,height,tmp;return tmp=c[1]<<8|c[0],width=16383&tmp,tmp=c[3]<<8|c[2],height=16383&tmp,{width:width,height:height,data:VP8,riff:riff}}function getStrLength(string,offset){return parseInt(string.substr(offset+4,4).split("").map(function(i){var unpadded=i.charCodeAt(0).toString(2);return new Array(8-unpadded.length+1).join("0")+unpadded}).join(""),2)}function parseRIFF(string){for(var offset=0,chunks={};offset<string.length;){var id=string.substr(offset,4),len=getStrLength(string,offset),data=string.substr(offset+4+4,len);offset+=8+len,chunks[id]=chunks[id]||[],"RIFF"===id||"LIST"===id?chunks[id].push(parseRIFF(data)):chunks[id].push(data)}return chunks}function doubleToString(num){return[].slice.call(new Uint8Array(new Float64Array([num]).buffer),0).map(function(e){return String.fromCharCode(e)}).reverse().join("")}var webm=new ArrayToWebM(frames.map(function(frame){var webp=parseWebP(parseRIFF(atob(frame.image.slice(23))));return webp.duration=frame.duration,webp}));postMessage(webm)}return WhammyVideo.prototype.add=function(frame,duration){if("canvas"in frame&&(frame=frame.canvas),"toDataURL"in frame&&(frame=frame.toDataURL("image/webp",this.quality)),!/^data:image\/webp;base64,/gi.test(frame))throw"Input must be formatted properly as a base64 encoded DataURI of type image/webp";this.frames.push({image:frame,duration:duration||this.duration})},WhammyVideo.prototype.compile=function(callback){var webWorker=processInWebWorker(whammyInWebWorker);webWorker.onmessage=function(event){return event.data.error?void console.error(event.data.error):void callback(event.data)},webWorker.postMessage(this.frames)},{Video:WhammyVideo}}();"undefined"!=typeof RecordRTC&&(RecordRTC.Whammy=Whammy);var DiskStorage={init:function(){function createObjectStore(dataBase){dataBase.createObjectStore(self.dataStoreName)}function putInDB(){function getFromStore(portionName){transaction.objectStore(self.dataStoreName).get(portionName).onsuccess=function(event){self.callback&&self.callback(event.target.result,portionName)}}var transaction=db.transaction([self.dataStoreName],"readwrite");self.videoBlob&&transaction.objectStore(self.dataStoreName).put(self.videoBlob,"videoBlob"),self.gifBlob&&transaction.objectStore(self.dataStoreName).put(self.gifBlob,"gifBlob"),self.audioBlob&&transaction.objectStore(self.dataStoreName).put(self.audioBlob,"audioBlob"),getFromStore("audioBlob"),getFromStore("videoBlob"),getFromStore("gifBlob")}var self=this;if("undefined"==typeof indexedDB||"undefined"==typeof indexedDB.open)return void console.error("IndexedDB API are not available in this browser.");var db,dbVersion=1,dbName=this.dbName||location.href.replace(/\/|:|#|%|\.|\[|\]/g,""),request=indexedDB.open(dbName,dbVersion);request.onerror=self.onError,request.onsuccess=function(){if(db=request.result,db.onerror=self.onError,db.setVersion)if(db.version!==dbVersion){var setVersion=db.setVersion(dbVersion);setVersion.onsuccess=function(){createObjectStore(db),putInDB()}}else putInDB();else putInDB()},request.onupgradeneeded=function(event){createObjectStore(event.target.result)}},Fetch:function(callback){return this.callback=callback,this.init(),this},Store:function(config){return this.audioBlob=config.audioBlob,this.videoBlob=config.videoBlob,this.gifBlob=config.gifBlob,this.init(),this},onError:function(error){console.error(JSON.stringify(error,null,"\t"))},dataStoreName:"recordRTC",dbName:null};"undefined"!=typeof RecordRTC&&(RecordRTC.DiskStorage=DiskStorage),"undefined"!=typeof RecordRTC&&(RecordRTC.GifRecorder=GifRecorder),"undefined"!=typeof RecordRTC&&(RecordRTC.MultiStreamRecorder=MultiStreamRecorder),"undefined"!=typeof RecordRTC&&(RecordRTC.RecordRTCPromisesHandler=RecordRTCPromisesHandler),"undefined"!=typeof RecordRTC&&(RecordRTC.WebAssemblyRecorder=WebAssemblyRecorder);
\ No newline at end of file
diff --git a/dev/WebAssemblyRecorder.js b/dev/WebAssemblyRecorder.js
index 04547d57..9c012d99 100644
--- a/dev/WebAssemblyRecorder.js
+++ b/dev/WebAssemblyRecorder.js
@@ -1,12 +1,12 @@
 // All Copyrights goes to: Google Inc.
 // Original: https://github.com/GoogleChromeLabs/webm-wasm
 
-// _________________
+// ______________________
 // WebAssemblyRecorder.js
 
 /**
  * WebAssemblyRecorder lets you create webm videos in JavaScript via WebAssembly. The library consumes raw RGBA32 buffers (4 bytes per pixel) and turns them into a webm video with the given framerate and quality. This makes it compatible out-of-the-box with ImageData from a CANVAS. With realtime mode you can also use webm-wasm for streaming webm videos.
- * @summary Video recording feature in Chrome and maybe Edge. Firefox is not supporting WritableStream yet. ReadableStream is also behind two flags on Firefox.
+ * @summary Video recording feature in Chrome, Firefox and maybe Edge.
  * @license {@link https://github.com/muaz-khan/RecordRTC#license|MIT}
  * @author {@link http://www.MuazKhan.com|Muaz Khan}
  * @typedef WebAssemblyRecorder
@@ -22,6 +22,11 @@
  * @param {object} config - {webAssemblyPath:'webm-wasm.wasm',workerPath: 'webm-worker.js', frameRate: 30, width: 1920, height: 1080}
  */
 function WebAssemblyRecorder(stream, config) {
+    if (typeof ReadableStream === 'undefined' || typeof WritableStream === 'undefined') {
+        // because it fixes readable/writable streams issues
+        console.error('Following polyfill is strongly recommended: https://unpkg.com/@mattiasbuelens/web-streams-polyfill/dist/polyfill.min.js');
+    }
+
     config = config || {};
 
     config.width = config.width || 640;
@@ -29,90 +34,90 @@ function WebAssemblyRecorder(stream, config) {
     config.frameRate = config.frameRate || 30;
     config.bitrate = config.bitrate || 1200;
 
-    function createBufferURL(buffer, type = '') {
+    function createBufferURL(buffer, type) {
         return URL.createObjectURL(new Blob([buffer], {
-            type
+            type: type || ''
         }));
     }
 
     function cameraStream() {
-        // Firefox requires:
-        // 1) dom.streams.enabled
-        // 2) javascript.options.streams
         return new ReadableStream({
-            async start(controller) {
-                const cvs = document.createElement('canvas');
-                const video = document.createElement('video');
+            start: function(controller) {
+                var cvs = document.createElement('canvas');
+                var video = document.createElement('video');
                 video.srcObject = stream;
+                video.onplaying = function() {
+                    cvs.width = config.width;
+                    cvs.height = config.height;
+                    var ctx = cvs.getContext('2d');
+                    var frameTimeout = 1000 / config.frameRate;
+                    setTimeout(function f() {
+                        ctx.drawImage(video, 0, 0);
+                        controller.enqueue(
+                            ctx.getImageData(0, 0, config.width, config.height)
+                        );
+                        setTimeout(f, frameTimeout);
+                    }, frameTimeout);
+                };
                 video.play();
-                await nextEvent(video, 'playing');
-                [cvs.width, cvs.height] = [config.width, config.height];
-                const ctx = cvs.getContext('2d');
-                const frameTimeout = 1000 / config.frameRate;
-                setTimeout(async function f() {
-                    ctx.drawImage(video, 0, 0);
-                    await controller.enqueue(
-                        ctx.getImageData(0, 0, config.width, config.height)
-                    );
-                    setTimeout(f, frameTimeout);
-                }, frameTimeout);
             }
         });
     }
 
-    function nextEvent(target, name) {
-        return new Promise(function(resolve) {
-            target.addEventListener(name, resolve, {
-                once: true
-            });
-        });
-    }
-
     var worker;
 
-    async function startRecording(stream) {
-        if (!config.workerPath) {
+    function startRecording(stream, buffer) {
+        if (!config.workerPath && !buffer) {
             // is it safe to use @latest ?
-            const buffer = await fetch(
+            fetch(
                 'https://unpkg.com/webm-wasm@latest/dist/webm-worker.js'
             ).then(function(r) {
-                return r.arrayBuffer();
+                r.arrayBuffer().then(function(buffer) {
+                    startRecording(stream, buffer);
+                });
             });
-
-            worker = new Worker(
-                URL.createObjectURL(new Blob([buffer], {
-                    type: 'text/javascript'
-                }))
-            );
-        } else {
-            worker = new Worker(config.workerPath);
+            return;
         }
 
-        worker.postMessage(config.webAssemblyPath || 'https://unpkg.com/webm-wasm@latest/dist/webm-wasm.wasm');
+        if (!config.workerPath && buffer instanceof ArrayBuffer) {
+            var blob = new Blob([buffer], {
+                type: 'text/javascript'
+            });
+            config.workerPath = URL.createObjectURL(blob);
+        }
 
-        await nextEvent(worker, 'message');
-        worker.postMessage({
-            width: config.width,
-            height: config.height,
-            bitrate: config.bitrate || 1200,
-            timebaseDen: config.frameRate || 30,
-            realtime: true
-        });
+        if (!config.workerPath) {
+            console.error('workerPath parameter is missing.');
+        }
 
-        // Firefox do not support "WritableStream" YET.
-        cameraStream().pipeTo(new WritableStream({
-            write(image) {
-                worker && worker.postMessage(image.data.buffer, [image.data.buffer]);
-            }
-        }));
+        worker = new Worker(config.workerPath);
 
-        worker.onmessage = function(event) {
-            if (!!event.data) {
+        worker.postMessage(config.webAssemblyPath || 'https://unpkg.com/webm-wasm@latest/dist/webm-wasm.wasm');
+        worker.addEventListener('message', function(event) {
+            if (event.data === 'READY') {
+                worker.postMessage({
+                    width: config.width,
+                    height: config.height,
+                    bitrate: config.bitrate || 1200,
+                    timebaseDen: config.frameRate || 30,
+                    realtime: true
+                });
+
+                cameraStream().pipeTo(new WritableStream({
+                    write: function(image) {
+                        if (!worker) {
+                            return;
+                        }
+
+                        worker.postMessage(image.data.buffer, [image.data.buffer]);
+                    }
+                }));
+            } else if (!!event.data) {
                 if (!isPaused) {
                     arrayOfBuffers.push(event.data);
                 }
             }
-        };
+        });
     }
 
     /**
@@ -125,6 +130,7 @@ function WebAssemblyRecorder(stream, config) {
     this.record = function() {
         arrayOfBuffers = [];
         isPaused = false;
+        this.blob = null;
         startRecording(stream);
     };
 
@@ -152,7 +158,7 @@ function WebAssemblyRecorder(stream, config) {
         isPaused = false;
     };
 
-    async function terminate() {
+    function terminate() {
         if (!worker) {
             return;
         }
@@ -176,11 +182,23 @@ function WebAssemblyRecorder(stream, config) {
      */
     this.stop = function(callback) {
         terminate();
-        var blob = new Blob(arrayOfBuffers, {
+
+        this.blob = new Blob(arrayOfBuffers, {
             type: 'video/webm'
         });
-        callback(blob);
+
+        callback(this.blob);
     };
+
+    /**
+     * @property {Blob} blob - The recorded blob object.
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.stop(function(){
+     *     var blob = recorder.blob;
+     * });
+     */
+    this.blob = null;
 }
 
 if (typeof RecordRTC !== 'undefined') {
diff --git a/dev/WebAssemblyRecorder.old.js b/dev/WebAssemblyRecorder.old.js
new file mode 100644
index 00000000..fb5f42b9
--- /dev/null
+++ b/dev/WebAssemblyRecorder.old.js
@@ -0,0 +1,192 @@
+// All Copyrights goes to: Google Inc.
+// Original: https://github.com/GoogleChromeLabs/webm-wasm
+
+// _________________
+// WebAssemblyRecorder.js
+
+/**
+ * WebAssemblyRecorder lets you create webm videos in JavaScript via WebAssembly. The library consumes raw RGBA32 buffers (4 bytes per pixel) and turns them into a webm video with the given framerate and quality. This makes it compatible out-of-the-box with ImageData from a CANVAS. With realtime mode you can also use webm-wasm for streaming webm videos.
+ * @summary Video recording feature in Chrome and maybe Edge. Firefox is not supporting WritableStream yet. ReadableStream is also behind two flags on Firefox.
+ * @license {@link https://github.com/muaz-khan/RecordRTC#license|MIT}
+ * @author {@link http://www.MuazKhan.com|Muaz Khan}
+ * @typedef WebAssemblyRecorder
+ * @class
+ * @example
+ * var recorder = new WebAssemblyRecorder(mediaStream);
+ * recorder.record();
+ * recorder.stop(function(blob) {
+ *     video.src = URL.createObjectURL(blob);
+ * });
+ * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
+ * @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.
+ * @param {object} config - {webAssemblyPath:'webm-wasm.wasm',workerPath: 'webm-worker.js', frameRate: 30, width: 1920, height: 1080}
+ */
+function WebAssemblyRecorder(stream, config) {
+    // following polyfill is strongly recommended:
+    // because it fixes readable/writable streams issues on Firefox:
+    // https://unpkg.com/@mattiasbuelens/web-streams-polyfill/dist/polyfill.min.js
+
+    config = config || {};
+
+    config.width = config.width || 640;
+    config.height = config.height || 480;
+    config.frameRate = config.frameRate || 30;
+    config.bitrate = config.bitrate || 1200;
+
+    function createBufferURL(buffer, type = '') {
+        return URL.createObjectURL(new Blob([buffer], {
+            type
+        }));
+    }
+
+    function cameraStream() {
+        // Firefox requires:
+        // 1) dom.streams.enabled
+        // 2) javascript.options.streams
+        return new ReadableStream({
+            async start(controller) {
+                const cvs = document.createElement('canvas');
+                const video = document.createElement('video');
+                video.srcObject = stream;
+                video.play();
+                await nextEvent(video, 'playing');
+                [cvs.width, cvs.height] = [config.width, config.height];
+                const ctx = cvs.getContext('2d');
+                const frameTimeout = 1000 / config.frameRate;
+                setTimeout(async function f() {
+                    ctx.drawImage(video, 0, 0);
+                    await controller.enqueue(
+                        ctx.getImageData(0, 0, config.width, config.height)
+                    );
+                    setTimeout(f, frameTimeout);
+                }, frameTimeout);
+            }
+        });
+    }
+
+    function nextEvent(target, name) {
+        return new Promise(function(resolve) {
+            target.addEventListener(name, resolve, {
+                once: true
+            });
+        });
+    }
+
+    var worker;
+
+    async function startRecording(stream) {
+        if (!config.workerPath) {
+            // is it safe to use @latest ?
+            const buffer = await fetch(
+                'https://unpkg.com/webm-wasm@latest/dist/webm-worker.js'
+            ).then(function(r) {
+                return r.arrayBuffer();
+            });
+
+            worker = new Worker(
+                URL.createObjectURL(new Blob([buffer], {
+                    type: 'text/javascript'
+                }))
+            );
+        } else {
+            worker = new Worker(config.workerPath);
+        }
+
+        worker.postMessage(config.webAssemblyPath || 'https://unpkg.com/webm-wasm@latest/dist/webm-wasm.wasm');
+
+        await nextEvent(worker, 'message');
+        worker.postMessage({
+            width: config.width,
+            height: config.height,
+            bitrate: config.bitrate || 1200,
+            timebaseDen: config.frameRate || 30,
+            realtime: true
+        });
+
+        // Firefox do not support "WritableStream" YET.
+        cameraStream().pipeTo(new WritableStream({
+            write(image) {
+                worker && worker.postMessage(image.data.buffer, [image.data.buffer]);
+            }
+        }));
+
+        worker.onmessage = function(event) {
+            if (!!event.data) {
+                if (!isPaused) {
+                    arrayOfBuffers.push(event.data);
+                }
+            }
+        };
+    }
+
+    /**
+     * This method records video.
+     * @method
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.record();
+     */
+    this.record = function() {
+        arrayOfBuffers = [];
+        isPaused = false;
+        startRecording(stream);
+    };
+
+    var isPaused;
+
+    /**
+     * This method pauses the recording process.
+     * @method
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.pause();
+     */
+    this.pause = function() {
+        isPaused = true;
+    };
+
+    /**
+     * This method resumes the recording process.
+     * @method
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.resume();
+     */
+    this.resume = function() {
+        isPaused = false;
+    };
+
+    async function terminate() {
+        if (!worker) {
+            return;
+        }
+
+        worker.postMessage(null);
+        worker.terminate();
+        worker = null;
+    }
+
+    var arrayOfBuffers = [];
+
+    /**
+     * This method stops recording video.
+     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
+     * @method
+     * @memberof WebAssemblyRecorder
+     * @example
+     * recorder.stop(function(blob) {
+     *     video.src = URL.createObjectURL(blob);
+     * });
+     */
+    this.stop = function(callback) {
+        terminate();
+        var blob = new Blob(arrayOfBuffers, {
+            type: 'video/webm'
+        });
+        callback(blob);
+    };
+}
+
+if (typeof RecordRTC !== 'undefined') {
+    RecordRTC.WebAssemblyRecorder = WebAssemblyRecorder;
+}
diff --git a/index.html b/index.html
index 2517266b..71fada7b 100644
--- a/index.html
+++ b/index.html
@@ -80,8 +80,7 @@
 
     <script src="https://cdn.webrtc-experiment.com/RecordRTC.js"></script>
     
-    <script src="https://cdn.webrtc-experiment.com/RecordRTC/dev/WebAssemblyRecorder.js"></script>
-    <!-- web streams API polyfill -->
+    <!-- web streams API polyfill to support Firefox -->
     <script src="https://unpkg.com/@mattiasbuelens/web-streams-polyfill/dist/polyfill.min.js"></script>
 
     <!-- for Edge/FF/Chrome/Opera/etc. getUserMedia support -->
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 00000000..8fbd0415
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,2115 @@
+{
+  "name": "recordrtc",
+  "version": "5.5.2",
+  "lockfileVersion": 1,
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+}
diff --git a/package.json b/package.json
index cc107973..97a45578 100644
--- a/package.json
+++ b/package.json
@@ -40,13 +40,16 @@
     "grunt": "0.4.5",
     "grunt-bump": "0.7.0",
     "grunt-cli": "0.1.13",
-    "grunt-contrib-concat": "0.5.1",
     "grunt-contrib-clean": "0.6.0",
+    "grunt-contrib-concat": "0.5.1",
     "grunt-contrib-copy": "0.8.2",
-    "grunt-replace": "0.11.0",
     "grunt-contrib-jshint": "0.11.3",
-    "grunt-contrib-uglify": "0.11.0",
+    "grunt-contrib-uglify": "^0.11.0",
     "grunt-jsbeautifier": "0.2.10",
+    "grunt-replace": "0.11.0",
     "load-grunt-tasks": "3.4.0"
+  },
+  "dependencies": {
+    "grunt-contrib-watch": "^1.1.0"
   }
 }
diff --git a/simple-demos/WebAssemblyRecorder.html b/simple-demos/WebAssemblyRecorder.html
index 1424b0ba..8d2cf824 100644
--- a/simple-demos/WebAssemblyRecorder.html
+++ b/simple-demos/WebAssemblyRecorder.html
@@ -20,9 +20,7 @@ <h1>WebAssembly Recorder using RecordRTC</h1>
 <br><br>
 <video id="video" controls autoplay playsinline></video>
 
-<!-- <script src="../dev/WebAssemblyRecorder.js"></script> -->
-<script src="https://cdn.webrtc-experiment.com/RecordRTC/dev/WebAssemblyRecorder.js"></script>
-<!-- web streams API polyfill -->
+<!-- web streams API polyfill to support Firefox -->
 <script src="https://unpkg.com/@mattiasbuelens/web-streams-polyfill/dist/polyfill.min.js"></script>
 
 <script src="https://cdn.webrtc-experiment.com/RecordRTC.js"></script>