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• how to prevent the hls video player dont refresh when m3u8 changes

  6 juin 2024, par Leo

  here i am using ffmpeg to use camera and audio to make a hls stream on server as the stream continious old m3u8 components deletes and new ones gets added to main.m3u8. but as we insert the url of hls stream file main.m3u8. the player refreshes as soon as the file gets rewritten because of new and old ones. so

  


  i have tried to change the players like hls.js or videojs etc none were to solve this. how to solve this and make sure the stream runs smoothly.

  


  Server.js

  


  const startStreaming = (viddev,auddev) => {
    if (ffmpegProcess) {
        ffmpegProcess.kill();
    }
    const segmentDuration = 10;
    const outputFilename = './video/output.m3u8';
    const ffmpegCommand = `ffmpeg -f dshow -i video="${viddev}" -f dshow -i audio="${auddev}" -codec:v libx264 -preset ultrafast -tune zerolatency -codec:a aac -b:a 128k -hls_time ${segmentDuration} -hls_list_size 3 -hls_flags delete_segments -start_number 0 -hls_segment_type mpegts ${outputFilename}`;

    ffmpegProcess = exec(ffmpegCommand);

    ffmpegProcess.stderr.on('data', (data) => {
        console.error(`ffmpeg stderr: ${data}`);
    });

    ffmpegProcess.on('close', (code) => {
        console.log(`ffmpeg process exited with code ${code}`);
    });
};

app.use('/video', express.static(path.join(__dirname, 'video')));

// Endpoint to list audio and video devices
app.get('/devices', async (req, res) => {
    const data=await parseDevices()
    // console.log(data.cameras[0].name)
    startStreaming(data.cameras[0].name,data.microphones[0].name);
    res.json(data)
});


  


  index.html

  


  &#xA;&#xA;&#xA;    &#xA;    &#xA;    &#xA;    &#xA;    &#xA;&#xA;&#xA;&#xA;    &#xA;        <source src="https://localhost:3000/video/output.m3u8" type="application/x-mpegURL">&#xA;    &#xA;&#xA;    <code class="echappe-js">&lt;script src=&quot;https://vjs.zencdn.net/8.10.0/video.min.js&quot;&gt;&lt;/script&gt;&#xA;    &lt;script&gt;&amp;#xA;        // Initialize Video.js player&amp;#xA;        var player = videojs(&amp;#x27;video&amp;#x27;, {&amp;#xA;            autoplay: &amp;#x27;play&amp;#x27;,&amp;#xA;            liveui: true  // Enable the live UI for live streams&amp;#xA;        });&amp;#xA;&amp;#xA;        // Seek to live when the player is ready&amp;#xA;        player.ready(function() {&amp;#xA;            player.liveTracker.on(&amp;#x27;liveedgechange&amp;#x27;, function() {&amp;#xA;                player.currentTime(player.liveTracker.liveCurrentTime());&amp;#xA;            });&amp;#xA;        });&amp;#xA;&amp;#xA;        // Handle any errors encountered by Video.js&amp;#xA;        player.on(&amp;#x27;error&amp;#x27;, function() {&amp;#xA;            console.error(&amp;#x27;Video.js encountered an error:&amp;#x27;, player.error());&amp;#xA;        });&amp;#xA;    &lt;/script&gt;&#xA;&#xA;&#xA;&#xA;&#xA;

  


• rtmp : Follow Flash player numbering for channels.

  16 septembre 2013, par Josh Allmann

  rtmp : Follow Flash player numbering for channels.
  Channel 4 is typically used by the Flash player to transmit
  
  audio, channel 6 for video, and various stream-specific invokes
  
  get sent over channel 8, which is designated the source channel.
  This more closely matches the behavior of the Flash player,
  
  including the transmission of play requests over channel 8.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/rtmppkt.h
  • [DBH] libavformat/rtmpproto.c

• FFmpeg .jpg images to .mp4 incompatible with Windows Media Player

  8 janvier 2020, par willspill

  I have a series of 10 images with which I am trying to form an animation. I have used the following code below in the command line :

  ffmpeg -f image2 -i plot-%03d.jpg -r 5 -pix_fmt yuv420p -vcodec mpeg4 output.mp4

  This creates a .mp4 file with a seemingly valid file size, however, when trying to open with Windows Media Player gives the following error :

  Windows Media Player cannot play the file. The Player might not support the file type or might not support the codec that was used to compress the file.

  I have tried many solutions from previous threads but have found no solution. I have checked that my version of windows media player is compatible with mp4, avi, wmv etc. and have tried all of these outputs also. Any ideas of the issue ?

  The full code :

  M:Example\Frames_plot-001_jpg>ffmpeg -f image2 -i plot-%03
  
  ix_fmt yuv420p -vcodec mpeg4 output.mp4
  
  FFmpeg version SVN-r11200, Copyright (c) 2000-2007 Fabrice Bellard,
  
    configuration: --enable-memalign-hack
  
    libavutil version: 49.5.0
  
    libavcodec version: 51.48.0
  
    libavformat version: 52.1.0
  
    built on Dec 11 2007 14:33:27, gcc: 3.4.5 (mingw special)
  
  Input #0, image2, from 'plot-%03d.jpg':
  
    Duration: 00:00:00.4, start: 0.000000, bitrate: N/A
  
      Stream #0.0: Video: mjpeg, yuvj420p, 4167x4167 [PAR 120:120 DAR
  
  tb(r)
  
  Output #0, mp4, to 'output.mp4':
  
      Stream #0.0: Video: mpeg4, yuv420p, 4167x4167 [PAR 1:1 DAR 1:1]
  
   kb/s,  5.00 tb(c)
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
  Press [q] to stop encoding
  
  Compiler did not align stack variables. Libavcodec has been miscomp
  
  and may be very slow or crash. This is not a bug in libavcodec,
  
  but in the compiler. You may try recompiling using gcc >= 4.2.
  
  Do not report crashes to FFmpeg developers.
  
  frame=    3 fps=  3 q=4.0 Lsize=     917kB time=0.6 bitrate=12522.6
  
  video:916kB audio:0kB global headers:0kB muxing overhead 0.072455%