Failed to extract any NAL units from video data:

[Ascol14]

Hello.
I don't really good obtain the packet.
Wow who obtain the duration in byte ?

My server.js : `const WebSocket = require('ws');
const fs = require('fs');
const { exec } = require('child_process');
var iconvlite = require('iconv-lite');

const express = require('express')
const app = express()
const port = 3000

app.use(express.static('public'))

app.listen(port, () => {
console.log(Example app listening on port ${port})
})

const PORT = process.env.PORT || 8080;
let minNaluPerChunk = 30,
interval = 0,
current = 0,
start = 0,
end = 0,
wss;
function extractChunks(buffer) {
let i = 0,
length = buffer.byteLength,
naluCount = 0,
value,
unit,
ntype,
state = 0,
lastIndex = 0,
result = [];

while (i < length) {
    value = buffer[i++];
    // finding 3 or 4-byte start codes (00 00 01 OR 00 00 00 01)
    switch (state) {
        case 0:
            if (value === 0) {
                state = 1;
            }
            break;
        case 1:
            if (value === 0) {
                state = 2;
            } else {
                state = 0;
            }
            break;
        case 2:
        case 3:
            if (value === 0) {
                state = 3;
            } else if (value === 1 && i < length) {
                if (lastIndex) {
                    unit = buffer.slice(lastIndex, i - state -1);
                    ntype = unit[0] & 0x1f;
                    naluCount++;
                }
                if (naluCount >= minNaluPerChunk && ntype !== 1 && ntype !== 5) {
                    result.push(lastIndex - state -1);
                    naluCount = 0;
                }
                state = 0;
                lastIndex = i;
            } else {
                state = 0;
            }
            break;
        default:
            break;
    }
}
if (naluCount > 0) {
    result.push(lastIndex);
}
return result;

}

let buffer = fs.readFileSync('./demo.h264');
let chunks = extractChunks(buffer);
let total = chunks.length;

function openSocket() {
wss = new WebSocket.Server({ port: PORT });
console.log('Server ready on port '+PORT);
wss.on('connection', function connection(ws) {
console.log('Socket connected. sending data...');
if (interval) {
clearInterval(interval);
}
ws.on('error', function error(error) {
console.log('WebSocket error');
});
ws.on('close', function close(msg) {
console.log('WebSocket close');
});

      interval = setInterval(function() {
        sendChunk();
      }, 800);
});

}

function writeChunk() {
for (i = 0; i < chunks.length; i++) {
end = chunks[i];
chunk = buffer.slice(start, end);
start = end;
if (i == 3) {
console.log(chunk)
}
fs.writeFile("./h264/" + i + '.h264', chunk, "binary", function(err) {
if(err) {
console.log(err);
exec('touch h264/' + i + '.h264');
fs.writeFile("h264/" + i + '.h264', chunk, "binary", function(err) {
if(err) {
console.log(err);
}
});
}
});
}
}
writeChunk();

function sendChunk() {
let anybodyThere = false;
if (current >= total) {
current = 0;
start = 0;
}
end = chunks[current];
current++;
wss.clients.forEach(function each(client) {
let chunk;
if (client.readyState === WebSocket.OPEN) {
anybodyThere = true;
chunk = buffer.slice(start, end);
start = end;
try {
client.send(JSON.stringify({data : chunk, type : "v"}));
} catch(e) {
console.log(Sending failed:, e);
}
if (current % 50 == 0) {
console.log(I am serving, no problem!);
}
if (current == 0) {
console.log(Started from first chunk...);
}
}
});

if (!anybodyThere) {
    if (interval) {
        current = start = end = 0;
        clearInterval(interval);
        console.log('nobody is listening. Removing interval for now...');
    }
}

}
openSocket();`

My index.html : `

<title>JMuxer demo</title>

Prerequisite command: `node h264.js`

<script> var jmuxer; window.onload = function() { var socketURL = 'ws://pierrerusche.com:8080'; jmuxer = new JMuxer({ node: 'player', mode: 'video', flushingTime: 800, fps: 30, debug: true, onError: function(data) { if (/Safari/.test(navigator.userAgent) && /Apple Computer/.test(navigator.vendor)) { jmuxer.reset(); } } });

 var ws = new WebSocket(socketURL);
 ws.binaryType = 'arraybuffer';
 ws.addEventListener('message',function(event) {
    data = JSON.parse(event.data)
    console.log(data)
    if (data.type == "v") {
        jmuxer.feed({
            video: new Uint8Array(data.data)
        });
    }
 });

 ws.addEventListener('error', function(e) {
    console.log('Socket Error');
 });

}

</script> <script type="text/javascript" src="jmuxer.min.js"></script> `

[dtbaker]

did you figure this out @Ascol14 ?

[puchunbing]

Hello, have you solved this problem? I am also encountering this bug now