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• Http live streaming for ipad, iphone and safari

  23 février 2013, par Riyas Anchal

  Anyone help me to find a solution to stream a video from a mac server to iPad, iPhone and mac safari using HTTP live streaming.

  Steps taken :

  1. Installed and configured FFMPEG for encoding
  2. installed the mediasegmenter provided by the Apple.

  The ffmpeg option used is

  ffmpeg -y -i input.mp4 -acodec aac -ar 48000 -ab 128k -ac 2 -s 1024×768 -vcodec libx264 -b 1200k -flags +loop+mv4 -cmp 256 -partitions +parti4x4+partp8x8+partb8x8 -subq 7 -trellis 1 -refs 5 -coder 0 -me_range 16 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 1200k -maxrate 1200k -bufsize 1200k -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 30 -aspect 4:3 -r 30 -g 90 -async 2 output.mp4

  I have tried different ffmpeg options to stream the video.In some options it works in Iphone and Safari browser in mac machine, but I didn't get an option for iPad.

  I want to stream an mp4 video for ipad, iPhone and mac safari. I also tried it with opensource segmenter .

  Have any solution for this ?

  Thanks,

  Riyas

• How can I read a live webstream in java using xuggle ? (I can do it in ffmpeg, just not xuggle)

  25 février 2013, par Grammin

  So if I run :

  ffmpeg -t 10 -re -i "rtmp://170.93.143.150/rtplive/ app=rtplive/ playpath=e000990f025f0075004d823633235daa swfUrl=http://www.chart.state.md.us/video/mediaplayer/player.swf pageUrl=http://www.chart.state.md.us/video/video.asp?feed=e000990f025f0075004d823633235daa stop=5000 flashver=`LNX 11,2,202,262` live=true" test.flv -report

  It gives me a 5 second snapsnot of video from that webstream that gets put into test.flv.
  Now I would like to do the same thing in java using xuggle except everytime I try and open the container it errors out on me and sets x to -1 :

   public IMediaReader grabStream(IMediaReader reader) throws IOException
  
    {
  
      String rtmp = "rtmp://170.93.143.150/rtplive/";
  
      rtmp = rtmp + " app=rtplive/";
  
      rtmp = rtmp + " playpath=e000990f025f0075004d823633235daa";
  
      rtmp = rtmp + " swfUrl=http://www.chart.state.md.us/video/mediaplayer/player.swf";
  
      rtmp = rtmp + " pageUrl=http://www.chart.state.md.us/video/video.asp?feed=e000990f025f0075004d823633235daa";
  
      rtmp = rtmp + " flashver=`LNX 11,2,202,262`";
  
      rtmp = rtmp + " live=true";
  
  
  
      IContainer container = IContainer.make();
  
      IMediaReader newReader = ToolFactory.makeReader(container);
  
  
  
      int x = container.open(rtmp, IContainer.Type.READ, null, true, false);
  
  
  
      if (x < 0)
  
      {
  
        IError ie = IError.make(x);
  
        System.out.println("Open error: " + ie.getType().toString());
  
        throw new RuntimeException("failed to open with error" + x);
  
      }
  
  
  
      return newReader;
  
    }

  Maybe the best way to do it is to stream in ffmpeg to a xuggle container using inputstream somehow ? Or maybe there is another way to stream in a webstream to java ?

• ffmpeg with multiple live inputs [closed]

  9 juin 2013, par maddanio

  we are trying to get ffmpeg to combine multiple live streams into one. In principle we got it to work by mosaicing the streams like so :

  ffmpeg -rtsp_transport tcp -r 25 -i rtsp ://root:password@192.168.178.91:554/axis-media/media.amp \
  -rtsp_transport tcp -r 25 -i rtsp ://root:password@192.168.178.92:554/axis-media/media.amp \
  -filter_complex "[0:0]pad=iw*2:ih[a] ;[a][1:0]overlay=w" ...

  the problem though is that ffmpeg seems to start the input streams at significantly different times, so that there is about a 1 second shift between the streams, that remains throughout. Now we do have correct time stamps (pts) on both streams. Can we somehow tell ffmpeg to respect those and use them to align the streams correctly ?