Recherche avancée

Sur d’autres sites (10199)

• avformat_open_input returns -2 (Android)

  29 septembre 2013, par Ivelius

  I'm using this FFMPEG port for Android.
  My Goal is to read RTSP stream eventually.

  I can open a stream from a local file (located at "/storage/emulated/0/bunny.mp4") ,
  using *avformat_open_input* function.

  However when I try to open the same file from remote location like *"http_ ://192.168.1.183/bunny.mp4*" , it returns error -2 .

  The whole cpp code is here.

  Any ideas ?

• Playing and recording a live stream from another computer webcam using VLC/FFmpeg [closed]

  22 octobre 2012, par user573014

  I was trying lately to set a video server on one machine and play it in a differen machine, it works with me.. but the problem is that it always stuck and become jammed in the middle .. and it is very slow comparing to the original stream.. something like 5 seconds delay which is not acceptable at all !
  The warning messages I get usually includes something like that :
  in the client side, which is the one which is jammed

  [0x24d1ab0] ts demux warning: discontinuity received 0x5 instead of 0xe (pid=68)
  
  [0x7f4340015e50] rtp demux warning: 2 packet(s) lost
  
  reference picture missing during reorder
  
  Missing reference picture
  
  mmco: unref short failure
  
  Reference 4 >= 4 (H264 - MPEG-4 AVC (part 10)) stopped
  
  error while decoding MB 34 14, bytestream (575)

  and that is the picture of the streaming when it is jammed

  

  and that is what it looks like when it is running smoothly

  

  This is the error message I got on the server

  [0x2513820] main generic debug: auto hidding mouse
  
  [0x2296230] main mux warning: late buffer for mux input (1840085)

  and Finally here is my command line that I am using >
  on the server :

  vlc -vvv v4l2:///dev/video1:v4l2-width=640:v4l2-height=480 --sout 
  
  '#duplicate{dst=display,dst="transcode{vcodec=h264,vb=800,ab=128}
  
  :duplicate{dst=rtp{mux=ts,dst=172.22.2.87,port=50004}'

  on the client :

  vlc -vvv rtp://@:50004 

  I thought that it might be from VLC or from my command .. I tried different protocol for transmission, with no luck I also tried FFmpeg and I got similar results + warning messages .. I thought then that both of them are using the same libraries in Linux

  here is the command using FFMpeg :

  ffmpeg -f video4linux2 -i /dev/video1 -vcodec libx264 -s 320x240 -pix_fmt 
  
  yuv420p -vb 200000 -minrate 200000 -maxrate 200000 -bufsize 2000000 -acodec 
  
  libmp3lame -ab 128k -ar 44100 -ac 2 -f mpegts udp://172.22.2.87:5544 

  In conclusion, I would like to find a solution for the latency of the streaming (which is very high) and the jamming problem
  I appreciate anyone's input, thank you

• Streaming webcam using ffmpeg and ffserver

  24 octobre 2012, par gazzwi86

  I'm using a Logitech C270 webcam and a Raspberry Pi and attempting to stream an audio and video feed to my mac. I've tried this quite a number of ways and now managed to get a video feed using mjpeg-streamer, however, this does not support audio.

  I was wondering if anyone could explain where I have gone wrong with my ffmpeg configuration. I am trying to stream /dev/video0, and if possible would like to do away with mjpeg-streamer so that I can use just one tool for the full task.

  ffmpeg installation

  echo "deb-src http://www.deb-multimedia.org sid main"  >> /etc/apt/sources.list
  
  sudo apt-get update && apt-get install deb-multimedia-keyring
  
  
  
  #Remove the second line from /etc/apt/sources.list
  
  #deb http://www.deb-multimedia.org wheezy main non-free
  
  
  
  sudo apt-get source ffmpeg-dmo
  
  cd ffmpeg-dmo-0.11
  
  ./configure
  
  make && make install

   :/etc/ffserver.config

  Port 80
  
  BindAddress 0.0.0.0
  
  MaxClients 10
  
  MaxBandwidth 50000
  
  NoDaemon
  
  
  
  <feed>
  
      file /tmp/webcam.ffm
  
      FileMaxSize 10M
  
  </feed>
  
  
  
  <stream>
  
      Format status
  
      ACL allow 192.168.2.0 192.168.2.255
  
  </stream>
  
  
  
  <stream>
  
      Feed feed1.ffm
  
      Format asf
  
      VideoFrameRate 15
  
      VideoSize 352x240
  
      VideoBitRate 256
  
      VideoBufferSize 40
  
      VideoGopSize 30
  
      AudioBitRate 64
  
      StartSendOnKey
  
  </stream>
  
  
  
  <stream>
  
      Feed webcam.ffm
  
      Format swf
  
      VideoSize 640x480
  
      VideoFrameRate 15
  
      VideoBitRate 2000
  
      VideoQMin 1
  
      VideoQMax 10
  
  </stream>

   :/usr/sbin/webcam.sh

  ffserver -f /etc/ffserver.conf & ffmpeg -v verbose -r 5 -s 640x480 -f video4linux2 -i /dev/video0 http://localhost/webcam.ffm