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  • FFMPEG x264 (fourcc=0x21) codec is not working with OpenCV

    6 mars 2020, par dkac

    I'm trying to use mp4 format coding (fourcc=0x21) on OpenCV 3.2 without success. Probably I have a problem with my Ubuntu 18.04 setup but currently I'm running out of ideas how to fix it. First, I recompiled FFMPEG with x264 support. Than, recompiled OpenCV (with contrib and OPENCV_ENABLE_NONFREE=ON, WITH_FFMPEG=ON). It is still not working.

    



    I cannot use fourcc different than 0x21. I mean.. I cannot use another codec.

    



    Example :

    



    >>> import cv2
>>> out = cv2.VideoWriter('output.mp4', 0x21, 20.0, (640,480))
OpenCV: FFMPEG: tag 0x00000021/'!???' is not found (format 'mp4 / (null)')'


    



    However, this is working fine (other fourcc, codec) :

    



    >>> out = cv2.VideoWriter('output.mp4',0x31637661 , 20.0, (640,480))


    



    OpenCV compiled with FFMPEG support (version 3.2), cmake config :

    



    Video I/O:
DC1394 1.x:                  NO
DC1394 2.x:                  YES (ver 2.2.5)
FFMPEG:                      YES
  avcodec:                   YES (ver 57.107.100)
  avformat:                  YES (ver 57.83.100)
  avutil:                    YES (ver 55.78.100)
  swscale:                   YES (ver 4.8.100)
  avresample:                YES (ver 3.7.0)


    



    FFMPEG build with x264 support :

    



    ffmpeg -version
ffmpeg version N-96891-g60b1f85 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
configuration: --prefix=/home/user/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/user/ffmpeg_build/include --extra-ldflags=-L/home/user/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/user/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
libavutil      56. 42.100 / 56. 42.100
libavcodec     58. 73.102 / 58. 73.102
libavformat    58. 39.101 / 58. 39.101
libavdevice    58.  9.103 / 58.  9.103
libavfilter     7. 77.100 /  7. 77.100
libswscale      5.  6.100 /  5.  6.100
libswresample   3.  6.100 /  3.  6.100
libpostproc    55.  6.100 / 55.  6.100


    



    FFMPEG x264 simple conversion test is working :

    



    ffmpeg -i in.mp4 -vcodec libx264 -f mp4 out.mp4y
ffmpeg version N-96891-g60b1f85 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
configuration: --prefix=/home/user/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/user/ffmpeg_build/include --extra-ldflags=-L/home/user/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/user/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
libavutil      56. 42.100 / 56. 42.100
libavcodec     58. 73.102 / 58. 73.102
libavformat    58. 39.101 / 58. 39.101
libavdevice    58.  9.103 / 58.  9.103
libavfilter     7. 77.100 /  7. 77.100
libswscale      5.  6.100 /  5.  6.100
libswresample   3.  6.100 /  3.  6.100
libpostproc    55.  6.100 / 55.  6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in.mp4':
Metadata:
   major_brand     : isom
   minor_version   : 512
   compatible_brands: isomiso2avc1mp41
   encoder         : Lavf57.83.100
Duration: 00:00:10.00, start: 0.000000, bitrate: 3826 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x960, 3825 kb/s, 10 fps, 10 tbr, 10240 tbn, 20 tbc (default)
Metadata:
  handler_name    : VideoHandler
File 'out.mp4y' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))


    


  • FFMPEG x264 (fourcc=0x21) codec is not working with OpenCV

    6 mars 2020, par dkac

    I’m trying to use mp4 format coding (fourcc=0x21) on OpenCV 3.2 without success. Probably I have a problem with my Ubuntu 18.04 setup but currently I’m running out of ideas how to fix it. First, I recompiled FFMPEG with x264 support. Than, recompiled OpenCV (with contrib and OPENCV_ENABLE_NONFREE=ON, WITH_FFMPEG=ON). It is still not working.

    I cannot use fourcc different than 0x21. I mean.. I cannot use another codec.

    Example :

    >>> import cv2
    
>>> out = cv2.VideoWriter('output.mp4', 0x21, 20.0, (640,480))
    
OpenCV: FFMPEG: tag 0x00000021/'!???' is not found (format 'mp4 / (null)')'

    However, this is working fine (other fourcc, codec) :

    >>> out = cv2.VideoWriter('output.mp4',0x31637661 , 20.0, (640,480))

    OpenCV compiled with FFMPEG support (version 3.2), cmake config :

    Video I/O:
    
DC1394 1.x:                  NO
    
DC1394 2.x:                  YES (ver 2.2.5)
    
FFMPEG:                      YES
    
  avcodec:                   YES (ver 57.107.100)
    
  avformat:                  YES (ver 57.83.100)
    
  avutil:                    YES (ver 55.78.100)
    
  swscale:                   YES (ver 4.8.100)
    
  avresample:                YES (ver 3.7.0)

    FFMPEG build with x264 support :

    ffmpeg -version
    
ffmpeg version N-96891-g60b1f85 Copyright (c) 2000-2020 the FFmpeg developers
    
built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
    
configuration: --prefix=/home/user/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/user/ffmpeg_build/include --extra-ldflags=-L/home/user/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/user/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
    
libavutil      56. 42.100 / 56. 42.100
    
libavcodec     58. 73.102 / 58. 73.102
    
libavformat    58. 39.101 / 58. 39.101
    
libavdevice    58.  9.103 / 58.  9.103
    
libavfilter     7. 77.100 /  7. 77.100
    
libswscale      5.  6.100 /  5.  6.100
    
libswresample   3.  6.100 /  3.  6.100
    
libpostproc    55.  6.100 / 55.  6.100

    FFMPEG x264 simple conversion test is working :

    ffmpeg -i in.mp4 -vcodec libx264 -f mp4 out.mp4y
    
ffmpeg version N-96891-g60b1f85 Copyright (c) 2000-2020 the FFmpeg developers
    
built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
    
configuration: --prefix=/home/user/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/user/ffmpeg_build/include --extra-ldflags=-L/home/user/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/user/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
    
libavutil      56. 42.100 / 56. 42.100
    
libavcodec     58. 73.102 / 58. 73.102
    
libavformat    58. 39.101 / 58. 39.101
    
libavdevice    58.  9.103 / 58.  9.103
    
libavfilter     7. 77.100 /  7. 77.100
    
libswscale      5.  6.100 /  5.  6.100
    
libswresample   3.  6.100 /  3.  6.100
    
libpostproc    55.  6.100 / 55.  6.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in.mp4':
    
Metadata:
    
   major_brand     : isom
    
   minor_version   : 512
    
   compatible_brands: isomiso2avc1mp41
    
   encoder         : Lavf57.83.100
    
Duration: 00:00:10.00, start: 0.000000, bitrate: 3826 kb/s
    
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x960, 3825 kb/s, 10 fps, 10 tbr, 10240 tbn, 20 tbc (default)
    
Metadata:
    
  handler_name    : VideoHandler
    
File 'out.mp4y' already exists. Overwrite? [y/N] y
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))

  • Images to video in PHP ? [duplicate]

    24 juin 2013, par jesper

    This question already has an answer here :

    I have tried to make a images to video converter, and this works.

    ffmpeg  -i /home/psafari/public_html/common/images/icon3.png -vcodec mpeg4 /home/psafari/public_html/" . time().".avi

    But how can i set the duration of the movie ? So it's maybe 7 minutes long ?

    Another question :

    I have 2 pictures, now the command only make the video from image "icon3.png", but i need it to run maybe picture2.png the first 5 seconds, and the rest (6.55 seconds) it has to view icon3.png ex.

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