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• ffmpeg Video thumbnail Service

  26 avril 2014, par user3576217

  I need active FFMPEG Video thumbnail Service. I have installed just FFMPEG but see Video thumbnail Service not working. I checked ffmpeg version on SSH and got this

  ffmpeg version 2.2.1 Copyright (c) 2000-2014 the FFmpeg developers
    built on Apr 13 2014 13:00:18 with gcc 4.4.6 (GCC) 20120305 (Red Hat 4.4.6-4)
    configuration : —prefix=/usr —libdir=/usr/lib64 —shlibdir=/usr/lib64 —mandir=/usr/share/man —enable-shared —enable-runtime-cpudetect —enable-gpl —enable-version3 —enable-postproc —enable-avfilter —enable-pthreads —enable-x11grab —enable-vdpau —disable-avisynth —enable-frei0r —enable-libopencv —enable-libdc1394 —enable-libgsm —enable-libmp3lame —enable-libnut —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-librtmp —enable-libspeex —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxavs —enable-libxvid —extra-cflags=’-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector —param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC’ —disable-stripping

  is their any way to enable just video thumbnail service ?

• Is there any way to resume live h264 playback (client rejoin) using the h.264 codec ?

  22 février 2021, par Ice

  Currently, I'm having a bit of an issue with the MediaSource API for resuming live h264 playback.
My server-side code will keep the first packet from FFmpeg, then dispatch it to clients. However, this works well but raises an issue.

  


  When I restart the stream and it dispatches to the client(s), it goes as expected and this is the result I expect when a client disconnects then has to reconnect to the stream, is the aforementioned result

  


  However, if I were to rejoin the stream, I get this as the result

  


  Also, FFMpeg data is being sent to the client in the picture above, it's just not rendering it for some reason.

  


  Here's my function for playing audio/video frames that I get from the server.

  


  private _playFrame(type: 0 | 1) {
    const src = type === 0 ? this.audioSource : this.videoSource;
    if (!src || src.updating) return;
    const queue = type === 0 ? this.audioFrameQueue : this.videoFrameQueue;
    src.appendBuffer(queue.shift());
    if (this.video.src && this.video.paused) this.video.play().then(() => null);
}


  


• How to check if client is still connected with ffmpeg

  11 décembre 2017, par Adalcar

  I am working on a live-streaming server in C++ using FFMPEG.
  I have a I have an acquisition thread which grabs the images from the cameras and I spawn a new thread on each client connexion to send them the packets.

  Here’s my "send" function :

  void Encoder::_encode()
  
  {
  
      int ret = 0;
  
      if (avcodec_send_frame(ctx, frame) < 0)
  
          throw new std::runtime_error("error sending a frame for encoding");
  
      while (ret >= 0)
  
      {
  
          ret = avcodec_receive_packet(ctx, pkt);
  
          if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
  
              return;
  
          avio_write(client, pkt->data, pkt->size);
  
          avio_flush(client);
  
          av_packet_unref(pkt);
  
      }
  
  }

  This encodes the frame and sends it to the client.

  The problem is : whenever the client exits, the thread keeps sending it data, and throws no exception, even when the same client connects again, it will spawn a new thread while the old one keeps running...
  Is there a way to "ping" the client to check whether it is still connected ?