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• FFmpeg NaCl module avformat_open_input (on rtsp stream) returns -5 : I/O error

  8 janvier 2016, par Taimoor Alam

  I want to create an RTSP player in Chrome PNaCl.

  I have successfully built the ffmpeg naclport including the following networking flags in the build.sh file for the ffmpeg NaCl port.

  —enable network —enable-protocols —enable-demuxer=rtsp —enable-demux=rtp —enable-demuxer=sdp —enable-decoder=h264

  Furthermore, I have successfully coded and the linked the ffmpeg NaCl port in my own PNaCl module. I have included the following network permissions in the manifest.json file :

  "permissions": [
  
  {
  
      "socket": [
  
          "tcp-listen:*:*", 
  
          "tcp-connect:*:*", 
  
          "resolve-host:*:*", 
  
          "udp-bind:*:*", 
  
          "udp-send-to:*:*"
  
      ],
  
  }

  Now once I run the following code, in PNaCl, the avformat_open_input(...) returns -5 or I/O Error :

      AVFormatContext* formatContext = avformat_alloc_context();
  
  
  
      av_register_all();
  
  
  
      avformat_network_init();
  
  
  
      const char * stream_path = "rtsp://184.72.239.149/vod/mp4:BigBuckBunny_115k.mov";
  
  
  
      int result = avformat_open_input(&formatContext, stream_path ,NULL,NULL);
  
  
  
      if(result< 0){
  
  
  
          PostMessage("input not opened, result: ");
  
  
  
          PostMessage(result);
  
  
  
      }else{
  
  
  
        PostMessage(std::string("input successfully opened"));
  
  
  
      }

  What am I possibly doing wrong, and why can’t the PNaCl module access the RTSP stream ?

  PS. This is a similar question, but it gives no definitive answer.

• fluent-ffmpeg module : "end" event does not fire

  6 décembre 2015, par ndugger

  I’m using the fluent-ffmpeg npm module

  I’ve POSTed a video from my client, and am using new stream.Readable to "read" the video Buffer.

  ffmpeg is converting and saving the file, and everything seems beautiful, but the "end" event never fires.

  My code is as follows :

  const videoStream = new stream.Readable({
  
      read: function (n) {
  
          this.push(myVideoBuffer);
  
      }
  
  });
  
  
  
  ffmpeg(videoStream)
  
  .on('progress', e => console.log(e))
  
  .on('end', () => {
  
      console.log('ended')
  
      videoStream.destroy();
  
  })
  
  .on('error', e => console.error(e))
  
  .save(`${process.cwd()}/media/videos/${Date.now()}.mp4`);

  I get a log on every progress event, and it does save the video, but the "end" event’s callback never gets called.

  I assume this is a bug, since everything else works just fine.

• lavc : Drop deprecated deinterlace module

  28 juillet 2015, par Vittorio Giovara

  lavc : Drop deprecated deinterlace module
  Deprecated in 03/2013.
  

  • [DBH] libavcodec/avcodec.h
  • [DBH] libavcodec/imgconvert.c
  • [DBH] libavcodec/imgconvert.h
  • [DBH] libavcodec/version.h
  • [DBH] libavcodec/x86/Makefile
  • [DBH] libavcodec/x86/deinterlace.asm