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  • OpenCV VideoWriter using ffmpeg with "Could not open codec 'libx264'" Error

    28 septembre 2016, par user2262504

    I am new to OpenCV, and I want write Mat images into video using VideoWriter on Ubuntu 12.04. But when constructing VideoWriter, errors came out.

    It seems that OpenCV invoke ffmpeg API using default parameters and ffmpeg invoke x264 using its default parameters. Then these setting is broken for libx264. Thus the "Could not open codec ’libx264’" error.

    Anyone has ideas to solve this problem ?

    More specifically :

    1. anyone knows where and how OpenCV invoke ffmpeg API ?
    2. how to change ffmpeg default settings using code, hopefull, can be easily embeded into OpenCV ?
    3. will changes of default in ffmpeg be carried to libx264 ?

    Errors :

    1. Uising CV_FOURCC('H', '2', '6', '4')
    [libx264 @ 0x255de40] broken ffmpeg default settings detected
    [libx264 @ 0x255de40] use an encoding preset (e.g. -vpre medium)
    [libx264 @ 0x255de40] preset usage: -vpre <speed> -vpre <profile>
    [libx264 @ 0x255de40] speed presets are listed in x264 --help
    [libx264 @ 0x255de40] profile is optional; x264 defaults to high
    Could not open codec 'libx264': Unspecified error

    2. Using FOURCC = -1 to invoke user customized codec
    OpenCV Error: Unsupported format or combination of formats (Gstreamer Opencv
    backend doesn't support this codec acutally.) in CvVideoWriter_GStreamer::open,
    file /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp,
    line 505 terminate called after throwing an instance of 'cv::Exception'
    what():  /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp:
    505: error: (-210) Gstreamer Opencv backend doesn't support this codec acutally.
    in function CvVideoWriter_GStreamer::open
    </profile></speed>

    Codes :

    int main(int argc, char *argv[])
    {
       VideoWriter outputVideo;
       bool fourcc_on = true; //switch on / off different error
       if (fourcc_on)
           outputVideo.open("outVideo.avi", CV_FOURCC('H', '2', '6', '4'), 25, Size(100, 100), true);
       else
           outputVideo.open("outVideo.avi", -1, 25, Size(100, 100), true);

       if (!outputVideo.isOpened())
       {
           cout  &lt;&lt; "Could not open the output video for write" &lt;&lt; endl;
           return -1;
       }
       return 0;
    }

    OpenCV Configuration :

    -- Detected version of GNU GCC: 46 (406)
    -- Found OpenEXR: /usr/lib/libIlmImf.so
    -- Looking for linux/videodev.h
    -- Looking for linux/videodev.h - not found
    -- Looking for linux/videodev2.h
    -- Looking for linux/videodev2.h - found
    -- Looking for sys/videoio.h
    -- Looking for sys/videoio.h - not found
    -- Looking for libavformat/avformat.h
    -- Looking for libavformat/avformat.h - found
    -- Looking for ffmpeg/avformat.h
    -- Looking for ffmpeg/avformat.h - not found
    -- Could NOT find JNI (missing:  JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH)
    --
    -- General configuration for OpenCV 2.4.8 =====================================
    --   Version control:               unknown
    --
    --   Platform:
    --     Host:                        Linux 3.8.0-38-generic x86_64
    --     CMake:                       2.8.7
    --     CMake generator:             Unix Makefiles
    --     CMake build tool:            /usr/bin/make
    --     Configuration:               RELEASE
    --
    --   C/C++:
    --     Built as dynamic libs?:      YES
    --     C++ Compiler:                /usr/bin/c++  (ver 4.6)
    --     C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
    --     C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
    --     C Compiler:                  /usr/bin/gcc
    --     C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
    --     C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
    --     Linker flags (Release):      
    --     Linker flags (Debug):        
    --     Precompiled headers:         YES
    --
    --   OpenCV modules:
    --     To be built:                 core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib python stitching superres ts videostab
    --     Disabled:                    world
    --     Disabled by dependency:      -
    --     Unavailable:                 androidcamera dynamicuda java
    --
    --   GUI:
    --     QT:                          NO
    --     GTK+ 2.x:                    YES (ver 2.24.10)
    --     GThread :                    YES (ver 2.32.4)
    --     GtkGlExt:                    NO
    --     OpenGL support:              NO
    --
    --   Media I/O:
    --     ZLib:                        /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.3.4)
    --     JPEG:                        /usr/lib/x86_64-linux-gnu/libjpeg.so (ver )
    --     PNG:                         /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.2.46)
    --     TIFF:                        /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 - 3.9.5)
    --     JPEG 2000:                   /usr/lib/x86_64-linux-gnu/libjasper.so (ver 1.900.1)
    --     OpenEXR:                     /usr/lib/libImath.so /usr/lib/libIlmImf.so /usr/lib/libIex.so /usr/lib/libHalf.so /usr/lib/libIlmThread.so (ver 1.6.1)
    --
    --   Video I/O:
    --     DC1394 1.x:                  NO
    --     DC1394 2.x:                  YES (ver 2.2.0)
    --     FFMPEG:                      YES
    --       codec:                     YES (ver 55.58.105)
    --       format:                    YES (ver 55.37.101)
    --       util:                      YES (ver 52.78.100)
    --       swscale:                   YES (ver 2.6.100)
    --       gentoo-style:              YES
    --     GStreamer:                  
    --       base:                      YES (ver 0.10.36)
    --       app:                       YES (ver 0.10.36)
    --       video:                     YES (ver 0.10.36)
    --     OpenNI:                      NO
    --     OpenNI PrimeSensor Modules:  NO
    --     PvAPI:                       NO
    --     GigEVisionSDK:               NO
    --     UniCap:                      NO
    --     UniCap ucil:                 NO
    --     V4L/V4L2:                    Using libv4l (ver 1.0.1)
    --     XIMEA:                       NO
    --     Xine:                        NO
    --
    --   Other third-party libraries:
    --     Use IPP:                     NO
    --     Use Eigen:                   NO
    --     Use TBB:                     NO
    --     Use OpenMP:                  NO
    --     Use GCD                      NO
    --     Use Concurrency              NO
    --     Use C=:                      NO
    --     Use Cuda:                    NO
    --     Use OpenCL:                  YES
    --
    --   OpenCL:
    --     Version:                     dynamic
    --     Include path:                /home/shixudongleo/Downloads/opencv-2.4.8/3rdparty/include/opencl/1.2
    --     Use AMD FFT:                 NO
    --     Use AMD BLAS:                NO
    --
    --   Python:
    --     Interpreter:                 /usr/bin/python (ver 2.7.3)
    --     Libraries:                   /usr/lib/libpython2.7.so
    --     numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.6.1)
    --     packages path:               lib/python2.7/dist-packages
    --
    --   Java:
    --     ant:                         NO
    --     JNI:                         NO
    --     Java tests:                  NO
    --
    --   Documentation:
    --     Build Documentation:         NO
    --     Sphinx:                      NO
    --     PdfLaTeX compiler:           /usr/bin/pdflatex
    --
    --   Tests and samples:
    --     Tests:                       YES
    --     Performance tests:           YES
    --     C/C++ Examples:              NO
    --
    --   Install path:                  /usr/local
    --
    --   cvconfig.h is in:              /home/shixudongleo/Downloads/opencv-2.4.8/build
    -- -----------------------------------------------------------------
    --
    -- Configuring done
    -- Generating done
    -- Build files have been written to: /home/XXX/Downloads/opencv-2.4.8/build

    FFMPEG

    ffmpeg is enable to support OpenCV and libx264 is enabled when compiling ffmpeg.
    By using ffmpeg command line, libx264 is running normally.

    $ ffmpeg -i test.avi -vcodec libx264 test.mp4
    ffmpeg -i test.avi -vcodec libx264 test.mp4 > ~/Downloads/ffmpeg_log.txt
    ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
     built on Apr 24 2014 16:39:51 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
     configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-shared --enable-pic
     libavutil      52. 78.100 / 52. 78.100
     libavcodec     55. 58.105 / 55. 58.105
     libavformat    55. 37.101 / 55. 37.101
     libavdevice    55. 13.100 / 55. 13.100
     libavfilter     4.  4.100 /  4.  4.100
     libswscale      2.  6.100 /  2.  6.100
     libswresample   0. 18.100 /  0. 18.100
     libpostproc    52.  3.100 / 52.  3.100
    Input #0, avi, from 'test.avi':
     Duration: 00:00:03.73, start: 0.000000, bitrate: 1757 kb/s
       Stream #0:0: Video: msvideo1 (CRAM / 0x4D415243), rgb555le, 320x240, 1781 kb/s, 15 tbr, 15 tbn, 15 tbc
       Metadata:
         title           : julius.avi Video #1
    File 'test.mp4' already exists. Overwrite ? [y/N] y
    No pixel format specified, yuv444p for H.264 encoding chosen.
    Use -pix_fmt yuv420p for compatibility with outdated media players.
    [libx264 @ 0x25d08e0] using cpu capabilities: none!
    [libx264 @ 0x25d08e0] profile High 4:4:4 Predictive, level 1.2, 4:4:4 8-bit
    [libx264 @ 0x25d08e0] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    Output #0, mp4, to 'test.mp4':
     Metadata:
       encoder         : Lavf55.37.101
       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 320x240, q=-1--1, 15360 tbn, 15 tbc
       Metadata:
         title           : julius.avi Video #1
    Stream mapping:
     Stream #0:0 -> #0:0 (msvideo1 -> libx264)
    Press [q] to stop, [?] for help
    frame=   56 fps=0.0 q=-1.0 Lsize=     321kB time=00:00:03.60 bitrate= 731.0kbits/s    
    video:320kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.409949%
    [libx264 @ 0x25d08e0] frame I:3     Avg QP:15.36  size:  7975
    [libx264 @ 0x25d08e0] frame P:38    Avg QP:26.05  size:  6230
    [libx264 @ 0x25d08e0] frame B:15    Avg QP:28.25  size:  4418
    [libx264 @ 0x25d08e0] consecutive B-frames: 46.4% 53.6%  0.0%  0.0%
    [libx264 @ 0x25d08e0] mb I  I16..4:  1.4% 72.8% 25.8%
    [libx264 @ 0x25d08e0] mb P  I16..4:  1.6%  5.7% 15.1%  P16..4:  7.6%  6.3%  7.4%  0.0%  0.0%    skip:56.3%
    [libx264 @ 0x25d08e0] mb B  I16..4:  0.2%  1.0%  2.0%  B16..8: 13.3%  7.8%  8.7%  direct: 8.3%  skip:58.8%  L0:34.9% L1:36.6% BI:28.5%
    [libx264 @ 0x25d08e0] 8x8 transform intra:37.7% inter:2.3%
    [libx264 @ 0x25d08e0] coded y,u,v intra: 52.1% 42.1% 30.1% inter: 19.6% 9.2% 5.2%
    [libx264 @ 0x25d08e0] i16 v,h,dc,p: 56% 17% 24%  2%
    [libx264 @ 0x25d08e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 16% 68%  1%  1%  1%  1%  1%  1%
    [libx264 @ 0x25d08e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 18% 28%  5%  6%  5%  7%  5%  6%
    [libx264 @ 0x25d08e0] Weighted P-Frames: Y:31.6% UV:21.1%
    [libx264 @ 0x25d08e0] ref P L0: 70.5%  9.0% 12.1%  6.5%  2.0%
    [libx264 @ 0x25d08e0] ref B L0: 91.3%  8.7%
    [libx264 @ 0x25d08e0] kb/s:700.56
  • OpenCV VideoWriter using ffmpeg with "Could not open codec 'libx264'" Error

    28 septembre 2016, par user2262504

    I am new to OpenCV, and I want write Mat images into video using VideoWriter on Ubuntu 12.04. But when constructing VideoWriter, errors came out.

    It seems that OpenCV invoke ffmpeg API using default parameters and ffmpeg invoke x264 using its default parameters. Then these setting is broken for libx264. Thus the "Could not open codec ’libx264’" error.

    Anyone has ideas to solve this problem ?

    More specifically :

    1. anyone knows where and how OpenCV invoke ffmpeg API ?
    2. how to change ffmpeg default settings using code, hopefull, can be easily embeded into OpenCV ?
    3. will changes of default in ffmpeg be carried to libx264 ?

    Errors :

    1. Uising CV_FOURCC('H', '2', '6', '4')
    [libx264 @ 0x255de40] broken ffmpeg default settings detected
    [libx264 @ 0x255de40] use an encoding preset (e.g. -vpre medium)
    [libx264 @ 0x255de40] preset usage: -vpre <speed> -vpre <profile>
    [libx264 @ 0x255de40] speed presets are listed in x264 --help
    [libx264 @ 0x255de40] profile is optional; x264 defaults to high
    Could not open codec 'libx264': Unspecified error

    2. Using FOURCC = -1 to invoke user customized codec
    OpenCV Error: Unsupported format or combination of formats (Gstreamer Opencv
    backend doesn't support this codec acutally.) in CvVideoWriter_GStreamer::open,
    file /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp,
    line 505 terminate called after throwing an instance of 'cv::Exception'
    what():  /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp:
    505: error: (-210) Gstreamer Opencv backend doesn't support this codec acutally.
    in function CvVideoWriter_GStreamer::open
    </profile></speed>

    Codes :

    int main(int argc, char *argv[])
    {
       VideoWriter outputVideo;
       bool fourcc_on = true; //switch on / off different error
       if (fourcc_on)
           outputVideo.open("outVideo.avi", CV_FOURCC('H', '2', '6', '4'), 25, Size(100, 100), true);
       else
           outputVideo.open("outVideo.avi", -1, 25, Size(100, 100), true);

       if (!outputVideo.isOpened())
       {
           cout  &lt;&lt; "Could not open the output video for write" &lt;&lt; endl;
           return -1;
       }
       return 0;
    }

    OpenCV Configuration :

    -- Detected version of GNU GCC: 46 (406)
    -- Found OpenEXR: /usr/lib/libIlmImf.so
    -- Looking for linux/videodev.h
    -- Looking for linux/videodev.h - not found
    -- Looking for linux/videodev2.h
    -- Looking for linux/videodev2.h - found
    -- Looking for sys/videoio.h
    -- Looking for sys/videoio.h - not found
    -- Looking for libavformat/avformat.h
    -- Looking for libavformat/avformat.h - found
    -- Looking for ffmpeg/avformat.h
    -- Looking for ffmpeg/avformat.h - not found
    -- Could NOT find JNI (missing:  JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH)
    --
    -- General configuration for OpenCV 2.4.8 =====================================
    --   Version control:               unknown
    --
    --   Platform:
    --     Host:                        Linux 3.8.0-38-generic x86_64
    --     CMake:                       2.8.7
    --     CMake generator:             Unix Makefiles
    --     CMake build tool:            /usr/bin/make
    --     Configuration:               RELEASE
    --
    --   C/C++:
    --     Built as dynamic libs?:      YES
    --     C++ Compiler:                /usr/bin/c++  (ver 4.6)
    --     C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
    --     C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
    --     C Compiler:                  /usr/bin/gcc
    --     C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
    --     C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
    --     Linker flags (Release):      
    --     Linker flags (Debug):        
    --     Precompiled headers:         YES
    --
    --   OpenCV modules:
    --     To be built:                 core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib python stitching superres ts videostab
    --     Disabled:                    world
    --     Disabled by dependency:      -
    --     Unavailable:                 androidcamera dynamicuda java
    --
    --   GUI:
    --     QT:                          NO
    --     GTK+ 2.x:                    YES (ver 2.24.10)
    --     GThread :                    YES (ver 2.32.4)
    --     GtkGlExt:                    NO
    --     OpenGL support:              NO
    --
    --   Media I/O:
    --     ZLib:                        /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.3.4)
    --     JPEG:                        /usr/lib/x86_64-linux-gnu/libjpeg.so (ver )
    --     PNG:                         /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.2.46)
    --     TIFF:                        /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 - 3.9.5)
    --     JPEG 2000:                   /usr/lib/x86_64-linux-gnu/libjasper.so (ver 1.900.1)
    --     OpenEXR:                     /usr/lib/libImath.so /usr/lib/libIlmImf.so /usr/lib/libIex.so /usr/lib/libHalf.so /usr/lib/libIlmThread.so (ver 1.6.1)
    --
    --   Video I/O:
    --     DC1394 1.x:                  NO
    --     DC1394 2.x:                  YES (ver 2.2.0)
    --     FFMPEG:                      YES
    --       codec:                     YES (ver 55.58.105)
    --       format:                    YES (ver 55.37.101)
    --       util:                      YES (ver 52.78.100)
    --       swscale:                   YES (ver 2.6.100)
    --       gentoo-style:              YES
    --     GStreamer:                  
    --       base:                      YES (ver 0.10.36)
    --       app:                       YES (ver 0.10.36)
    --       video:                     YES (ver 0.10.36)
    --     OpenNI:                      NO
    --     OpenNI PrimeSensor Modules:  NO
    --     PvAPI:                       NO
    --     GigEVisionSDK:               NO
    --     UniCap:                      NO
    --     UniCap ucil:                 NO
    --     V4L/V4L2:                    Using libv4l (ver 1.0.1)
    --     XIMEA:                       NO
    --     Xine:                        NO
    --
    --   Other third-party libraries:
    --     Use IPP:                     NO
    --     Use Eigen:                   NO
    --     Use TBB:                     NO
    --     Use OpenMP:                  NO
    --     Use GCD                      NO
    --     Use Concurrency              NO
    --     Use C=:                      NO
    --     Use Cuda:                    NO
    --     Use OpenCL:                  YES
    --
    --   OpenCL:
    --     Version:                     dynamic
    --     Include path:                /home/shixudongleo/Downloads/opencv-2.4.8/3rdparty/include/opencl/1.2
    --     Use AMD FFT:                 NO
    --     Use AMD BLAS:                NO
    --
    --   Python:
    --     Interpreter:                 /usr/bin/python (ver 2.7.3)
    --     Libraries:                   /usr/lib/libpython2.7.so
    --     numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.6.1)
    --     packages path:               lib/python2.7/dist-packages
    --
    --   Java:
    --     ant:                         NO
    --     JNI:                         NO
    --     Java tests:                  NO
    --
    --   Documentation:
    --     Build Documentation:         NO
    --     Sphinx:                      NO
    --     PdfLaTeX compiler:           /usr/bin/pdflatex
    --
    --   Tests and samples:
    --     Tests:                       YES
    --     Performance tests:           YES
    --     C/C++ Examples:              NO
    --
    --   Install path:                  /usr/local
    --
    --   cvconfig.h is in:              /home/shixudongleo/Downloads/opencv-2.4.8/build
    -- -----------------------------------------------------------------
    --
    -- Configuring done
    -- Generating done
    -- Build files have been written to: /home/XXX/Downloads/opencv-2.4.8/build

    FFMPEG

    ffmpeg is enable to support OpenCV and libx264 is enabled when compiling ffmpeg.
    By using ffmpeg command line, libx264 is running normally.

    $ ffmpeg -i test.avi -vcodec libx264 test.mp4
    ffmpeg -i test.avi -vcodec libx264 test.mp4 > ~/Downloads/ffmpeg_log.txt
    ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
     built on Apr 24 2014 16:39:51 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
     configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-shared --enable-pic
     libavutil      52. 78.100 / 52. 78.100
     libavcodec     55. 58.105 / 55. 58.105
     libavformat    55. 37.101 / 55. 37.101
     libavdevice    55. 13.100 / 55. 13.100
     libavfilter     4.  4.100 /  4.  4.100
     libswscale      2.  6.100 /  2.  6.100
     libswresample   0. 18.100 /  0. 18.100
     libpostproc    52.  3.100 / 52.  3.100
    Input #0, avi, from 'test.avi':
     Duration: 00:00:03.73, start: 0.000000, bitrate: 1757 kb/s
       Stream #0:0: Video: msvideo1 (CRAM / 0x4D415243), rgb555le, 320x240, 1781 kb/s, 15 tbr, 15 tbn, 15 tbc
       Metadata:
         title           : julius.avi Video #1
    File 'test.mp4' already exists. Overwrite ? [y/N] y
    No pixel format specified, yuv444p for H.264 encoding chosen.
    Use -pix_fmt yuv420p for compatibility with outdated media players.
    [libx264 @ 0x25d08e0] using cpu capabilities: none!
    [libx264 @ 0x25d08e0] profile High 4:4:4 Predictive, level 1.2, 4:4:4 8-bit
    [libx264 @ 0x25d08e0] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    Output #0, mp4, to 'test.mp4':
     Metadata:
       encoder         : Lavf55.37.101
       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 320x240, q=-1--1, 15360 tbn, 15 tbc
       Metadata:
         title           : julius.avi Video #1
    Stream mapping:
     Stream #0:0 -> #0:0 (msvideo1 -> libx264)
    Press [q] to stop, [?] for help
    frame=   56 fps=0.0 q=-1.0 Lsize=     321kB time=00:00:03.60 bitrate= 731.0kbits/s    
    video:320kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.409949%
    [libx264 @ 0x25d08e0] frame I:3     Avg QP:15.36  size:  7975
    [libx264 @ 0x25d08e0] frame P:38    Avg QP:26.05  size:  6230
    [libx264 @ 0x25d08e0] frame B:15    Avg QP:28.25  size:  4418
    [libx264 @ 0x25d08e0] consecutive B-frames: 46.4% 53.6%  0.0%  0.0%
    [libx264 @ 0x25d08e0] mb I  I16..4:  1.4% 72.8% 25.8%
    [libx264 @ 0x25d08e0] mb P  I16..4:  1.6%  5.7% 15.1%  P16..4:  7.6%  6.3%  7.4%  0.0%  0.0%    skip:56.3%
    [libx264 @ 0x25d08e0] mb B  I16..4:  0.2%  1.0%  2.0%  B16..8: 13.3%  7.8%  8.7%  direct: 8.3%  skip:58.8%  L0:34.9% L1:36.6% BI:28.5%
    [libx264 @ 0x25d08e0] 8x8 transform intra:37.7% inter:2.3%
    [libx264 @ 0x25d08e0] coded y,u,v intra: 52.1% 42.1% 30.1% inter: 19.6% 9.2% 5.2%
    [libx264 @ 0x25d08e0] i16 v,h,dc,p: 56% 17% 24%  2%
    [libx264 @ 0x25d08e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 16% 68%  1%  1%  1%  1%  1%  1%
    [libx264 @ 0x25d08e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 18% 28%  5%  6%  5%  7%  5%  6%
    [libx264 @ 0x25d08e0] Weighted P-Frames: Y:31.6% UV:21.1%
    [libx264 @ 0x25d08e0] ref P L0: 70.5%  9.0% 12.1%  6.5%  2.0%
    [libx264 @ 0x25d08e0] ref B L0: 91.3%  8.7%
    [libx264 @ 0x25d08e0] kb/s:700.56
  • FFMPEG "Error setting GOP size" when converting from mp4 to ogg

    25 avril 2014, par gCardinal

    I built a little internal website to upload and convert videos using Symfony2, PHP-FFMPEG (via this bundle : https://github.com/pulse00/ffmpeg-bundle). It worked fine on my dev machine, a PC, but it refuses to work on my prod machine, a ubuntu server, outputting "[libtheora @ 0x17f7380] Error setting GOP size" whenever I run the command.

    Here is said command :

    ffmpeg -y -i url/to/input.mp4 -vcodec libtheora -acodec libvorbis -b:v 1000k -refs 6 -coder 1 -sc_threshold 40 -g 30 -flags +loop -me_range 16 -subq 7 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -trellis 1 -b:a 128k url/to/output.ogg

    This is generated by PHP-FFMPEG so I don’t really have any control over it.

    I’ll admit that I don’t really understand ffmpeg, so my knowledge is limited, but I don’t see any -g parameter where it could be trying to set the GOP size and anyways, I’m guessing, if it worked on my dev, it should also work on the prod machine, right ?

    I figured I should maybe include an output of both ffmpeg versions : http://i.imgur.com/ec4MnKl.png

    I don’t feel like this is the source of the problem, but like I said, I know little about ffmpeg so it could be !

    Thanks a lot to anyone reading this and even more to those taking the time to answer :)

    Edit : I tried running the most basic command I could

    ffmpeg -i foo.mp4 foo.ogg

    And it outputs the same error. Again, with my limited knowledge, I’m starting to think my install of ffmpeg just can’t handle the ogg format. I’ll keep digging.