Recherche avancée

Sur d’autres sites (6125)

• avcodec/ffv1 : Implement CRC with non zero initial and final value

  25 septembre 2024, par Michael Niedermayer

  avcodec/ffv1 : Implement CRC with non zero initial and final value
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/ffv1.h
  • [DH] libavcodec/ffv1dec.c
  • [DH] libavcodec/ffv1enc.c

• No audio in the final video when converting webm blobs to mp4 using ffmpeg

  28 septembre 2024, par alpecca

  I trying to record user camera and microphone and using MediaRecorder to convert the stream to blobs and sending the blobs every 2 second to the backend using websocket. Everything is working fine, but when I checked the final mp4 video in the backend, it doesn't have any audio to it, I try specifying the audio codec, but still no help.

  


  My frontend code :-

  


  const micStream = await navigator.mediaDevices.getUserMedia({ audio: true });

const recorder = new MediaRecorder(stream, {
   mimeType: 'video/webm;codecs=H264',
   videoBitsPerSecond: 8000000,
   audioBitsPerSecond : 8000000
});

recorder.ondataavailable = (e: BlobEvent) => {
    websocket.send(e.data)         
}  
recorder.start(2000);


  


  And here is the backend code :-

  


  @router.websocket("/streamaudio")
async def websocket_endpoint(websocket: WebSocket):
    await manager.connect(websocket)

    recordingFile = os.path.join(os.getcwd(), f"recording_.mp4")

    command = [
        'ffmpeg', 
        '-y',
        '-i', 
        '-', 
        '-codec:v', 
        'copy', 
        '-c:a', 'aac', 
        '-y',
        '-f', 'mp4',
        recordingFile,
        # "-"
        # f'output{queueNumber}.mp4',
    ]  

    
    try:
        while True:
            try:
           
                data = await websocket.receive_bytes()
                
                process.stdin.send(data)
               
            except RuntimeError:
                break      
    except WebSocketDisconnect:
        print(f"Client disconnected: {websocket.client.host}")
    finally:
        manager.disconnect(websocket)
        await process.stdin.aclose()
        await process.wait()  


  


• FFmpeg Not Creating or Appending Final HLS Segment When RTMP Stream Ends [closed]

  14 août 2024, par Arjit

  I am transcoding an RTMP stream to HLS using FFmpeg, and I have a problem : when the RTMP stream finishes, the last segment, which does not reach the target duration, is not created as a .ts file. Consequently, this last segment is not appended to the playlist file.

  


  command :

  


  fmpeg -i rtmp://localhost:1935/live/xyz -c:v libx264 -preset veryfast -b:v 400k -c:a aac -b:a 64k -s 426x240 -hls_playlist_type event -hls_time 10 -hls_list_size 0 -hls_segment_filename jack/240p_%03d.ts jack/240p.m3u8


  


  I expected that when the RTMP stream ends or when i terminate that FFmpeg process, FFmpeg would create a .ts file for the last segment, even if it is shorter than the target duration (10 seconds), and that this segment would be appended to the playlist (output.m3u8).