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• x264_encoder_encode() how to watch function body ?

  25 février 2016, par ULTRANj

  I’m working with VLC player source code (GitHub link) and I need to study how the function x264_encoder_encode() in codec h.264 works. This function is used in file x264.c but i couldn’t find it’s body and decloration. Where can I see it ?

• The application was unable to start correctly (0xc000a200). Click OK to close the application

  18 février 2016, par Babak

  I have installed openCv and ffmpeg library on visual studio 2013 & windows 10. I had configured all of dll, lib and include setting.
  The language of ffmpeg library is c and my program language is C++. When I run my program, it spills out the following error
  The application was unable to start correctly (0xc000a200). Click OK to close the application
  I have set the /APPCONTAINER : NO option to the linker command line but this error message apparent yet.

• Issue creating video with FFmpeg from Gource output

  16 avril 2013, par user1832408

  I'm trying to create a video with FFmpeg from Gource output but FFmpeg fails for some reason. I have no idea why as the error message is quite general. Does anyone have any ideas ? Is the Gource output perhaps invalid ?

  set GOURCE=C:\Program Files\Gource\0.39
  
  set FFMPEG=C:\Program Files\FFmpeg\20130412-git-694fa00-win32-static\bin
  
  set SOURCE=src
  
  
  
  "%GOURCE%\gource.exe" -1280x720 -o gource.ppm %SOURCE%
  
  "%FFMPEG%\ffmpeg.exe" -y -r 60 -f image2pipe -vcodec ppm -i gource.ppm -vcodec libx264 -preset ultrafast -crf 1 -threads 0 -bf 0 -v verbose gource.x264.avi

  FFmpeg output

  ffmpeg version N-52045-g694fa00 Copyright (c) 2000-2013 the FFmpeg developers
    built on Apr 12 2013 16:54:51 with gcc 4.8.0 (GCC)
    configuration : —enable-gpl —enable-version3 —disable-w32threads —enable-avisynth —enable-bzlib —enable-fontconfig —enable-frei0r —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libcaca —enable-libfreetype —enable-libgsm —enable-libilbc —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-librtmp —enable-libschroedinger —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libtwolame —enable-libvo-aacenc —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxavs —enable-libxvid —enable-zlib
    libavutil      52. 26.100 / 52. 26.100
    libavcodec     55.  2.100 / 55.  2.100
    libavformat    55.  2.100 / 55.  2.100
    libavdevice    55.  0.100 / 55.  0.100
    libavfilter     3. 53.101 /  3. 53.101
    libswscale      2.  2.100 /  2.  2.100
    libswresample   0. 17.102 /  0. 17.102
    libpostproc    52.  3.100 / 52.  3.100
  [image2pipe @ 003bade0] Stream #0 : not enough frames to estimate rate ; consider increasing probesize
  Input #0, image2pipe, from 'gource.ppm' :
    Duration : N/A, bitrate : N/A
      Stream #0:0 : Video : ppm, rgb24, 1280x720, 60 tbr, 60 tbn, 60 tbc
  [graph 0 input from stream 0:0 @ 003bbb60] w:1280 h:720 pixfmt:rgb24 tb:1/60 fr:60/1 sar:0/1 sws_param:flags=2
  [auto-inserted scaler 0 @ 003bbaa0] w:0 h:0 flags :'0x4' interl:0
  [format @ 003bb4e0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_null_0' and the filter 'format'
  [graph 0 input from stream 0:0 @ 003bbb60] TB:0.016667 FRAME_RATE:60.000000 SAMPLE_RATE:nan
  [auto-inserted scaler 0 @ 003bbaa0] w:1280 h:720 fmt:rgb24 sar:0/1 -> w:1280 h:720 fmt:yuv444p sar:0/1 flags:0x4
  No pixel format specified, yuv444p for H.264 encoding chosen.
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  [libx264 @ 003bc980] using cpu capabilities : MMX2 SSE2Fast LZCNT
  [libx264 @ 003bc980] profile High 4:4:4 Predictive, level 3.2, 4:4:4 8-bit
  Output #0, avi, to 'gource.x264.avi' :
    Metadata :
      ISFT : Lavf55.2.100
      Stream #0:0 : Video : h264 (H264 / 0x34363248), yuv444p, 1280x720, q=-1—1, 60 tbn, 60 tbc
  Stream mapping :
    Stream #0:0 -> #0:0 (ppm -> libx264)
  Press [q] to stop, [?] for help
  frame=   17 fps=0.0 q=0.0 size=      43kB time=00:00:00.21 bitrate=1614.1kbits/s    
  frame=   33 fps= 32 q=0.0 size=     164kB time=00:00:00.48 bitrate=2777.5kbits/s    
  frame=   48 fps= 31 q=0.0 size=     277kB time=00:00:00.73 bitrate=3093.0kbits/s    
  gource.ppm : Input/output error
  No more output streams to write to, finishing.
  frame=   48 fps= 30 q=2358879.0 Lsize=     324kB time=00:00:00.80 bitrate=3313.9kbits/s
  video:317kB audio:0kB subtitle:0 global headers:0kB muxing overhead 2.112279%
  
  [libx264 @ 003bc980] frame I:1     Avg QP : 0.00  size : 10560
  
  [libx264 @ 003bc980] frame P:47    Avg QP : 0.00  size :  6680
  
  [libx264 @ 003bc980] mb I  I16..4 : 100.0%  0.0%  0.0%
  
  [libx264 @ 003bc980] mb P  I16..4 :  0.5%  0.0%  0.0%  P16..4 :  1.9%  0.0%  0.0%  0.0%  0.0%    skip:97.5%
  
  [libx264 @ 003bc980] coded y,u,v intra : 3.7% 1.1% 1.2% inter : 1.4% 0.5% 0.6%
  
  [libx264 @ 003bc980] i16 v,h,dc,p : 93%  4%  2%  0%
  
  [libx264 @ 003bc980] kb/s:3245.31