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• What kind of stream GStreamer produce ?

  16 novembre 2014, par Max

  I use following 2 commands to stream video from Raspberry Pi

  RaPi

  raspivid -t 999999 -h 720 -w 1080 -fps 25 -hf -b 2000000 -o - | gst-launch-1.0 -v fdsrc ! h264parse !  rtph264pay config-interval=1 pt=96 ! gdppay ! tcpserversink host=$RA-IP-ADDR port=5000 

  Linux Box

  gst-launch-1.0 -v tcpclientsrc host=$RA-IP-ADDR port=5000  ! gdpdepay !  rtph264depay ! avdec_h264 ! videoconvert ! autovideosink sync=false 

  But what kind of stream is it ? Can I read it with OpenCV ? or convert with avconv|ffmpeg nc $RA-IP-ADDR 5000 | avconv ? or watch with VLC ?

• 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 ?

• Cannot stream webcam using ffserver because of malloc error [migrated]

  21 septembre 2012, par user1509326

  I was following this tutorial RaspBerry Pi webcam and when I run the following command from root :

  $ ffserver -f /root/ffserver.conf & ffmpeg -v 2 -r 5 -s 640x480 -f video4linux2 -i /dev/video1` http://localhost:8090/webcam.ffm

  The camera is turned on and everything is fine, except it does not stream. I checked the terminal. From video 1, I get the following error :

  bind(port 8090): Address already in use
  
  *** glibc detected *** ffmpeg: malloc(): smallbin double linked list corrupted: 0x0000000000e5ac00 **

  When I use another port like 5000, I get the same result :

  $ ffserver -f /root/ffserver.conf & ffmpeg -v 2 -r 5 -s 640x480 -f video4linux2 -i /dev/video1 http://localhost:8090/webcam.ffm
  
  [2] 3795
  
  avserver version 0.8.3-4:0.8.3-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers
  
    built on Jun 12 2012 16:52:09 with gcc 4.6.3
  
  *** glibc detected *** ffmpeg: malloc(): smallbin double linked list corrupted: 0x0000000000b77c00 ***