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• mov : Check the entries value when parsing dref boxes

  8 mars 2016, par Luca Barbato

  mov : Check the entries value when parsing dref boxes
  And properly reset the entries count when resetting the entries.
  CC : libav-stable@libav.org
  Bug-Id : 929
  
  Bug-Id : CVE-2016-3062
  

  • [DBH] libavformat/mov.c

• debian ffmpeg webcam streaming to remote server error

  13 mars 2016, par James

  I have a beaglebone black that I am trying to stream live video from, to an OSX computer. The streaming client potion seems to work if I point it to a local ffserver.

  root@beaglebone:~# ffmpeg -f v4l2 -s 320x240 -r 30 -i /dev/video0 http://127.0.0.1:8090/feed1.ffm
  
  ffmpeg version N-78848-gf114839 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.9.2 (Debian 4.9.2-10)
  
    configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags='-O3 -I/root/ffmpeg_build/include -mfpu=neon -mtune=cortex-a8' --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-libass --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
  
    libavutil      55. 19.100 / 55. 19.100
  
    libavcodec     57. 27.101 / 57. 27.101
  
    libavformat    57. 27.100 / 57. 27.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 38.100 /  6. 38.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, video4linux2,v4l2, from '/dev/video0':
  
    Duration: N/A, start: 101977.117890, bitrate: 36864 kb/s
  
      Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 320x240, 36864 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
  
  Output #0, ffm, to 'http://127.0.0.1:8090/feed1.ffm':
  
    Metadata:
  
      creation_time   : 2016-03-03 05:32:52
  
      encoder         : Lavf57.27.100
  
      Stream #0:0: Video: mjpeg, yuv422p, 320x240, q=2-31, 100 kb/s, 30 fps, 1000k tbn, 20 tbc
  
      Metadata:
  
        encoder         : Lavc57.27.101 mjpeg
  
      Side data:
  
        cpb: bitrate max/min/avg: 200000/0/100000 buffer size: 200000 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> mjpeg (native))
  
  Press [q] to stop, [?] for help

  However, if I point it at a remote (my computer’s) ffserver it throws an error

  root@beaglebone:~# ffmpeg -f v4l2 -s 320x240 -r 30 -i /dev/video0 http://192.168.200.40:8090/feed1.ffm
  
  ffmpeg version N-78848-gf114839 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.9.2 (Debian 4.9.2-10)
  
    configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags='-O3 -I/root/ffmpeg_build/include -mfpu=neon -mtune=cortex-a8' --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-libass --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
  
    libavutil      55. 19.100 / 55. 19.100
  
    libavcodec     57. 27.101 / 57. 27.101
  
    libavformat    57. 27.100 / 57. 27.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 38.100 /  6. 38.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, video4linux2,v4l2, from '/dev/video0':
  
    Duration: N/A, start: 102012.942038, bitrate: 36864 kb/s
  
      Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 320x240, 36864 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
  
  [ffm @ 0x1427df0] no encoder found for codec id 141
  
  http://192.168.200.40:8090/feed1.ffm: Invalid argument

  It appears the 141nd codec in this AVCodecID enum is AV_CODEC_ID_VP8 /AV_CODEC_ID_PICTOR depending on whether or not AV_CODEC_ID_MPEG2VIDEO_XVMC is defined ? https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/avcodec.h

  Also including my ffserver configuration.

  HTTPPort 8090 
  
  HTTPBindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 10000           
  
  
  
  CustomLog -
  
  NoDaemon                     
  
  
  
  <feed>             
  
     File ./feed1.ffm          
  
     Truncate 
  
     ACL allow localhost        
  
     ACL allow 192.168.200.0 192.168.200.255      
  
  </feed>
  
  
  
  <stream>
  
     Feed feed1.ffm
  
     Format mpjpeg
  
     NoAudio
  
     VideoSize 320x240           
  
     VideoFrameRate 30         
  
     StartSendOnKey
  
     VideoBitRate 400           
  
     VideoIntraOnly             
  
     Strict -1                  
  
     PreRoll 0                  
  
  </stream>
  
  
  
  <stream>                    
  
     Format status
  
     ACL allow localhost
  
     ACL allow 192.168.0.0 192.168.255.255
  
  </stream>

  Anyways I have no idea how to approach this problem. Any pointers would be appreciated.

• How to use direct264 in Directshow ?

  6 octobre 2019, par Phung Tien Trieu

  I am finding a h264 (x264) directshow filter for my application and i found project direct264 here : https://sourceforge.net/projects/direct264

  



  When can see dump.ax from binary package but when i load it to GraphStudioNext (or try to register it by using regsvr32) i see error :

  



  
  
_{(source : tientrieu.net)}