This code is built on top of VideoTrimmer.

Changes from original:

1. The UI for time selector info is modified.
2. The range selector is forced to begin from 00:00. In the original the range bar was positioned in the center.
3. The library used to trim the video is changed to MP4Composer from MP4Parser.
4. VideoTrimmerView is moved into the library for quick and easy setup.
5. Fixed TimeLineView not getting updated issue when a new video is loaded again.
6. Added watermark functionality.

Gradle

Step 1: Add the JitPack repository to your root build file.

allprojects {
    repositories {
        maven { url 'https://jitpack.io' }
    }
}

Step 2: Add the dependency:

dependencies {
  implementation 'com.github.Amal92:Trimmy:<latest-version>'
}

How to use

1. Add VideoTrimmerView in your layout.

 <com.amp.trimmy.VideoTrimmerView
        android:id="@+id/videoTrimmerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
  />

2. Use the following methods to use VideoTrimmerView

 videoTrimmerView.setMaxDurationInMs(10 * 1000)
 videoTrimmerView.setMinDurationInMs(1 * 1000)
 videoTrimmerView.setOnK4LVideoListener(this)
 videoTrimmerView.setDestinationFile(trimmedVideoFile)

 // make sure the videoTimmerView is drawing before calling this method
 videoTrimmerView.post {
   videoTrimmerView.setVideoURI(inputVideoUri)
 }
 
 // Use this is control the visibility of time duration displayed
 videoTrimmerView.setVideoInformationVisibility(true)
 
 // Use this to set if the trimmed video should be mute
 videoTrimmerView.shouldMute(true) // Default is false
 
 // Use this to set the time scale of the trimmed video
 // Value should be in the range of -8(X) to 8(X)
 videoTrimmerView.setTimeScale(2) // Default is 1
 
 // Use this method to start trimming the selected time frame
 videoTrimmerView.initiateTrimming()

 // Use this method to draw watermark on the trimmed video
 videoTrimmerView.setWaterMark(BitmapFactory.decodeResource(resources, R.drawable.text_logo),WaterMarkPosition.RIGHT_BOTTOM,20,20)

3. Implement the listener to receive callback

class MainActivity : AppCompatActivity(), VideoTrimmingListener {

 override fun onErrorWhileViewingVideo(what: Int, extra: Int) {
    }

    override fun onFinishedTrimming(uri: Uri?) {
        // use this uri to the trimmed video file
    }

    override fun onTrimFailed(exception: Exception?) {
       
    }

    override fun onTrimProgressing(progress: Double) {
        
    }

    override fun onTrimStarted() {
       
    }

    override fun onVideoPrepared() {

    }

}