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• Reading RTMP streams using FFMPEG returns AVERROR_EOF randomly

  9 octobre 2013, par user2628781

  I am using FFMpeg to receive RTMP streams. This logic is placed in a custom video player I am building.

  I managed to successfully connect to the RTMP stream and display the video correctly. However, after a period in time, the stream terminates prematurely with an AVERROR_EOF when I perform av_read_frame().

  This indicates to me that the file has ended so my demux, video and audio threads terminates thinking that the video has ended.
  However, the video playback hasn't yet reached its end (in the case of a file streamed through rtmp) or from a live stream (which runs forever). The EOFs are received very randomly so it may run for say 7 min before this occurs or after 3 mins.

  Is this a characteristic behaviour of RTMP or am I doing something incorrectly ?
  I am also having a similar problem with Http Live Streams using FFMpeg.

  A small snippet of the code is provided below :

   AVPacket packet;
  
  //start timeout timer and timeout
  
  __interrupt_timer.start();
  
  
  
  int ret = av_read_frame(format_context, &packet); //0: ok, <0: error/end
  
  
  
  
  
  //invalidate the timer
  
  __interrupt_timer.invalidate();
  
  
  
  if (ret != 0) {
  
      if (ret == AVERROR_EOF) { //end of file. FIXME: why no eof if replaying by seek(0)?            
  
          if (!eof) {
  
              eof = true;
  
              started_ = false;
  
              pkt->data = QByteArray(); //flush
  
              pkt->markEnd();
  
              qDebug("End of file. %s %d", __FUNCTION__, __LINE__);
  
              emit finished();
  
              return true;
  
          }
  
          pkt->data = QByteArray(); //flush
  
          //return true;
  
          return false; //frames after eof are eof frames
  
      } else if (ret == AVERROR_INVALIDDATA) {
  
          qWarning("AVERROR_INVALIDDATA");
  
      } else if (ret == AVERROR(EAGAIN)) {
  
          return true;
  
      }
  
      qWarning("[AVDemuxer] error: %s", av_err2str(ret));
  
      return false;
  
  }

• Restreaming video containing two languages live with ffmpeg

  9 novembre 2012, par user1810837

  I have a project where i need to restream a live stream which has two languages setup on the audio.
  Spanish on left and English on right

  The stream mapping is :

  Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv420p, 512x288 [SAR 1:1 DAR 16:9], q=2-31, 1k tbn, 1k tbc
  
  Stream #0:1: Audio: mp3 ([2][0][0][0] / 0x0002), 44100 Hz, stereo, s16, 18 kb/s

  I need to restream this back live with just the English from the right side or just spanish from the left side, I tried looking everywhere but did not find any type of solution .

  Since this needs to be done live, I can't be using other programs to separate video and audio to get it done.

  This needs to be done through ffmpeg and I wonder if it even capable of doing so with original built or it would need some custom modification.

• Live audio streaming from IP camera/rtsp to website

  16 décembre 2018, par Peter Pihlmann Pedersen

  I have a Dahua IP camera with a microphone. I would like to get the audio stream playing on a website like a live radio.

  I have a raspberry pi which I was planning to use with ffmpeg, but I haven’t had much success in bridging the gap between that and my website to form an audio stream.

  • Can this be done via sftp/ftp with mp3 files and some fancy php/javascript to play like a live radio ?

  • Do I need to use another service ? (would like to minimise costs as much as possible !)

  Thanks !

  Peter