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    29 novembre 2010, par

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Sur d’autres sites (5292)

  • Launching ffmpeg from inside my C code doesn't convert video stream from fifo

    13 mai 2017, par abraxas1

    (Beaglebone Black, ubuntu 16.04 linux 4.4.62-ti-r99)

    I have a raw h264 feed coming into my C program (into a callback from a custom API) and then I named-piped the raw h264 to a file and this CLI command converts that file successfully.

    ffmpeg -report -re -framerate 30 -y -f h264 -i orbi_0148.cam1.h264 -c:v copy -an -video_size 1920x1080 -f mp4 orbi_0148.cam1-1.mp4

    I then try to launch this command from my program with the same options using execv(),

    first mkfifo the fifo’s,

    then launch ffmpeg (shown below) starts the streaming form the cameras to my callback function, and out to the fifos.

    I close the fifos at the end of video recording, and don’t get any file created and get this output, which I don’t understand at all.
    (the successful command line output follows below this output generated from execv())
    thanks, any help much appreciated.
    hardware has come in now and the spot light is on me.

    (execv output with options -report -y -i /tmp/fifocam3.h264 -c:v copy -an -video_size 1920x1080 -f mp4 /media/sd-card/orbi_0140.cam3.mp4)

    root@arm:/home/orbi# cat ffmpeg-20170511-001941.log 
    
ffmpeg started on 2017-05-11 at 00:19:41
    
Report written to "ffmpeg-20170511-001941.log"
    
Command line:
    
/usr/bin/ffmpeg -report -y -i /tmp/fifocam3.h264 -c:v copy -an -video_size 1920x1080 -f mp4 /media/sd-card/orbi_0140.cam3.mp4
    
ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
    

    
  built with gcc 5.4.0 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/arm-linux-gnueabihf --incdir=/usr/include/arm-linux-gnueabihf --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11gr  libavutil      54. 31.100 / 54. 31.100
    
  libavcodec     56. 60.100 / 56. 60.100
    
  libavformat    56. 40.101 / 56. 40.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 40.101 /  5. 40.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.101 /  1.  2.101
    
  libpostproc    53.  3.100 / 53.  3.100
    
Splitting the commandline.
    
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option '-i' ... matched as input url with argument '/tmp/fifocam3.h264'.
    
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'copy'.
    
Reading option '-an' ... matched as option 'an' (disable audio) with argument '1'.
    
Reading option '-video_size' ... matched as AVOption 'video_size' with argument '1920x1080'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'mp4'.
    
Reading option '/media/sd-card/orbi_0140.cam3.mp4' ... matched as output url.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option report (generate a report) with argument 1.
    
Applying option y (overwrite output files) with argument 1.
    
…
    
Successfully parsed a group of options.
    
Parsing a group of options: input url /tmp/fifocam3.h264.
    
…
    
Successfully parsed a group of options.
    
Opening an input file: /tmp/fifocam3.h264.
    
[h264 @ 0xf249a0] Format h264 probed with size=2048 and score=51
    
[h264 @ 0xf249a0] Before avformat_find_stream_info() pos: 0 bytes read:32768 seeks:0
    
[h264 @ 0xf25460] Current profile doesn't provide more RBSP data in PPS, skipping
    
[h264 @ 0xf25460] bytestream overread -4
    
[h264 @ 0xf25460] bytestream overread -4
    
[h264 @ 0xf25460] bytestream overread -4
    
[h264 @ 0xf25460] bytestream overread -4
    
[h264 @ 0xf25460] bytestream overread -10
    
[h264 @ 0xf25460] error while decoding MB 112 28, bytestream -10
    
[h264 @ 0xf25460] concealing 4737 DC, 4737 AC, 4737 MV errors in P frame
    
[h264 @ 0xf25460] Frame num gap 7 5
    

    

    
/////// successful command line run  \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
    
root@arm:/home/orbi# ffmpeg -report -re -framerate 30 -y -f h264 -i orbi_0148.cam1.h264 -c:v copy -an -video_size 1920x1080 -f mp4 orbi_0148.cam1-1.mp4
    

    
root@arm:/home/orbi# cat ffmpeg-20170511-002629.log 
    
ffmpeg started on 2017-05-11 at 00:26:29
    
Report written to "ffmpeg-20170511-002629.log"
    
Command line:
    
ffmpeg -report -re -framerate 30 -y -f h264 -i orbi_0148.cam1.h264 -c:v copy -an -video_size 1920x1080 -f mp4 orbi_0148.cam1-1.mp4
    
ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/arm-linux-gnueabihf --incdir=/usr/include/arm-linux-gnueabihf --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11gr  libavutil      54. 31.100 / 54. 31.100
    
  libavcodec     56. 60.100 / 56. 60.100
    
  libavformat    56. 40.101 / 56. 40.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 40.101 /  5. 40.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.101 /  1.  2.101
    
  libpostproc    53.  3.100 / 53.  3.100
    
Splitting the commandline.
    
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
    
Reading option '-re' ... matched as option 're' (read input at native frame rate) with argument '1'.
    
Reading option '-framerate' ... matched as AVOption 'framerate' with argument '30'.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'h264'.
    
Reading option '-i' ... matched as input url with argument 'orbi_0148.cam1.h264'.
    
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'copy'.
    
Reading option '-an' ... matched as option 'an' (disable audio) with argument '1'.
    
Reading option '-video_size' ... matched as AVOption 'video_size' with argument '1920x1080'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'mp4'.
    
Reading option 'orbi_0148.cam1-1.mp4' ... matched as output url.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option report (generate a report) with argument 1.
    
Applying option y (overwrite output files) with argument 1.
    
…
    
Successfully parsed a group of options.
    
Parsing a group of options: input url orbi_0148.cam1.h264.
    
Applying option re (read input at native frame rate) with argument 1.
    
Applying option f (force format) with argument h264.
    
…
    
Successfully parsed a group of options.
    
Opening an input file: orbi_0148.cam1.h264.
    
[h264 @ 0x848a20] Before avformat_find_stream_info() pos: 0 bytes read:32768 seeks:0
    
[h264 @ 0x8515b0] Current profile doesn't provide more RBSP data in PPS, skipping
    
[h264 @ 0x8515b0] Current profile doesn't provide more RBSP data in PPS, skipping
    
[h264 @ 0x848a20] max_analyze_duration 5000000 reached at 5005000 microseconds st:0
    
[h264 @ 0x848a20] After avformat_find_stream_info() pos: 3773440 bytes read:3801088 seeks:0 frames:152
    
Input #0, h264, from 'orbi_0148.cam1.h264':
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0, 152, 1/1200000: Video: h264 (Main), yuv420p(tv), 1920x1080, 29.97 fps, 29.97 tbr, 1200k tbn, 59.94 tbc
    
Successfully opened the file.
    
Parsing a group of options: output url orbi_0148.cam1-1.mp4.
    
…
    
Applying option c:v (codec name) with argument copy.
    
Applying option an (disable audio) with argument 1.
    
Applying option f (force format) with argument mp4.
    
Successfully parsed a group of options.
    
Opening an output file: orbi_0148.cam1-1.mp4.
    
Successfully opened the file.
    
[mp4 @ 0x8fb230] Codec for stream 0 does not use global headers but container format requires global headers
    
Output #0, mp4, to 'orbi_0148.cam1-1.mp4':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
    Stream #0:0, 0, 1/1200000: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080, q=2-31, 29.97 fps, 29.97 tbr, 1200k tbn, 1200k tbc
    
…
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
Press [q] to stop, [?] for help
    
[NULL @ 0x8515b0] Current profile doesn't provide more RBSP data in PPS, skipping    
    
No more output streams to write to, finishing.e=00:00:08.64 bitrate=5887.7kbits/s    
    
frame=  270 fps= 30 q=-1.0 Lsize=    6443kB time=00:00:08.97 bitrate=5880.6kbits/s    
    
video:6440kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.056839%
    
Input file #0 (orbi_0148.cam1.h264):
    
  Input stream #0:0 (video): 270 packets read (6594052 bytes); 
    
  Total: 270 packets (6594052 bytes) demuxed
    
Output file #0 (orbi_0148.cam1-1.mp4):
    
  Output stream #0:0 (video): 270 packets muxed (6594052 bytes); 
    
  Total: 270 packets (6594052 bytes) muxed
    
0 frames successfully decoded, 0 decoding errors
    
[AVIOContext @ 0x931650] Statistics: 34 seeks, 308 writeouts
    
[AVIOContext @ 0x851190] Statistics: 6594052 bytes read, 0 seeks

  • avcodec/vp9 : add ff_vp9_idct_idct_{4x4,8x8}_ssse3().

    3 novembre 2013, par Clément Bœsch
    avcodec/vp9 : add ff_vp9_idct_idct_4x4,8x8_ssse3().

    1789 decicycles in idct_idct_4x4_add_c, 262136 runs, 8 skips
    
1839 decicycles in idct_idct_4x4_add_c, 524270 runs, 18 skips
    
1864 decicycles in idct_idct_4x4_add_c, 1048548 runs, 28 skips
    

    529 decicycles in ff_vp9_idct_idct_4x4_add_ssse3, 262138 runs, 6 skips
    
516 decicycles in ff_vp9_idct_idct_4x4_add_ssse3, 524282 runs, 6 skips
    
474 decicycles in ff_vp9_idct_idct_4x4_add_ssse3, 1048565 runs, 11 skips
    

    ( 3.9x faster)
    

    7726 decicycles in idct_idct_8x8_add_c, 1048433 runs, 143 skips
    
7732 decicycles in idct_idct_8x8_add_c, 2096882 runs, 270 skips
    
7731 decicycles in idct_idct_8x8_add_c, 4193772 runs, 532 skips
    

    1145 decicycles in ff_vp9_idct_idct_8x8_add_ssse3, 1048549 runs, 27 skips
    
1137 decicycles in ff_vp9_idct_idct_8x8_add_ssse3, 2097097 runs, 55 skips
    
1086 decicycles in ff_vp9_idct_idct_8x8_add_ssse3, 4194188 runs, 116 skips
    

    ( 7.1x faster)
    

    Overall decode time before commit :
    
  16.48s user 0.03s system 99% cpu 16.526 total
    
  16.54s user 0.01s system 99% cpu 16.566 total
    
  16.46s user 0.03s system 99% cpu 16.511 total
    

    Overall decode time after commit :
    
  16.34s user 0.02s system 99% cpu 16.378 total
    
  16.28s user 0.02s system 99% cpu 16.315 total
    
  16.32s user 0.03s system 99% cpu 16.366 total
    

    Tested on i7 920 with 40s 1080p footage.
    • [DH] libavcodec/x86/vp9dsp.asm
    • [DH] libavcodec/x86/vp9dsp_init.c

  • ffmpeg unique frames only

    5 novembre 2013, par William

    I have a video sequence (MPEG1) of 30 fps that is decoded in two ways :

    • opencv_ffmpeg returns 30 images per second, but only 5 of them are unique, while all others are clones of the unique ones.

    • proprietary players (MediaPlayer) returns only the 5 unique frames and "holds" them for (1/5) sec each.

    Is there a way to grab only the unique frames that the coder knows and not the total amount the ffmpeg decoder produces to fulfill the fps rate ?

    I'm developing a tracker and my tracker is forced to run 6 times slower and do many mistakes due to these "cloned frames".

    Does anyone know any technical term to the problem ? Unfortunately, ffmpeg is a black box for an opencv user and the documentation is sparse.

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