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  • Récupération d’informations sur le site maître à l’installation d’une instance

    26 novembre 2010, par

    Utilité
    Sur le site principal, une instance de mutualisation est définie par plusieurs choses : Les données dans la table spip_mutus ; Son logo ; Son auteur principal (id_admin dans la table spip_mutus correspondant à un id_auteur de la table spip_auteurs)qui sera le seul à pouvoir créer définitivement l’instance de mutualisation ;
    Il peut donc être tout à fait judicieux de vouloir récupérer certaines de ces informations afin de compléter l’installation d’une instance pour, par exemple : récupérer le (...)

  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Organiser par catégorie

    17 mai 2013, par

    Dans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
    Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
    Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...)

Sur d’autres sites (4376)

  • Javacv : Decoding H.264 "live" stream coming from red5 server on android device

    26 mars 2015, par Ichigo Kurosaki

    Here is my problem,
    I have implemented a server side application using Red5, which sends H.264 encoded live stream, on client side the stream is received as byte[]
    In order to decode it on Android client side i have followed the Javacv-FFmpeg library. The code for decoding is as follows

    public Frame decodeVideo(byte[] data,long timestamp){
    
           frame.image = null;
    
           frame.samples = null;
    
           avcodec.av_init_packet(pkt);
    
           BytePointer video_data = new BytePointer(data);
    
           avcodec.AVCodec codec = avcodec.avcodec_find_decoder(codec_id);
    
           video_c = null;
    
           video_c = avcodec.avcodec_alloc_context3(codec);
    
           video_c.width(320);
    
           video_c.height(240);
    
           video_c.pix_fmt(0);
    
           video_c.flags2(video_c.flags2()|avcodec.CODEC_FLAG2_CHUNKS);
    
           avcodec.avcodec_open2(video_c, codec, null))
    
           picture = avcodec.avcodec_alloc_frame()
    
           pkt.data(video_data);
    
           pkt.size(data.length);
    
           int len = avcodec.avcodec_decode_video2(video_c, picture, got_frame, pkt);
    
           if ((len >= 0) && ( got_frame[0] != 0)) {
    
             ....
    
              process the decoded frame into **IPLImage of Javacv** and render it with **Imageview** of Android
    
           }
    
}

    Data received from server is as follows
    Few Frames having following pattern
    17 01 00 00 00 00 00 00 02 09 10 00 00 00 0F 06 00 01 C0 01 07 09 08 04 9A 00 00 03 00 80 00 00 16 EF 65 88 80 07 00 05 6C 98 90 00...

    Many frames having following pattern
    27 01 00 00 00 00 00 00 02 09 30 00 00 00 0C 06 01 07 09 08 05 9A 00 00 03 00 80 00 00 0D 77 41 9A 02 04 15 B5 06 20 E3 11 E2 3C 46 ....

    With H.264 codec for decoder, decoder outputs length >0 but got_frames=0 always.
    With MPEG1 codec, decoder outputs length >0 and got_frames>0 but the output image is green or distorted.

    However following FFmpegFrameGrabber code of javacv i can decode the local files( H.264 encoded ) with similar code as above.

    I wonder what details i am missing, and header related data manipulation or setting codec appropriate for decoder.

    Any suggestion, help appreciated.
    Thanks in advance.

  • 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

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