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Autres articles (24)

  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

  • 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 (...)

  • Les vidéos

    21 avril 2011, par

    Comme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
    Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
    Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...)

Sur d’autres sites (2591)

  • OpenCV VideoCapture not read any video File in Windows 7 32bit

    3 octobre 2014, par The_Maxtor

    i try to read .avi or .mpeg video file using VideoCapture class of OpenCV2.4.8 in C++ using QtCreator and CMake 2.8.12.1.
    Before built OpenCV, i download FFMPEG static version and put them into Program Files directory, i add their path into enviroments variable PATH, then i download K Lite Codec Pack Full, install it and only then i built OpenCV with CMAKE and mingw provide by Qt. After installation i add to PATH the right path of built OpenCV.
    The stream from webcam works fine, but the stream from a video file doesn’t work. I tried on Windows 7 32bit and Windows 8 64bit.
    Here is the code

    #include <opencv2></opencv2>imgproc/imgproc.hpp>
    
#include <opencv2></opencv2>highgui/highgui.hpp>
    
#include <opencv2></opencv2>core/core.hpp>
    
#include "opencv2/opencv.hpp"
    
cv::Mat img;
    
cv::VideoCapture cap("Prova.avi");
    
std::cerr &lt;&lt; cap.isOpened() &lt;&lt; std::endl;
    
while(cap.read(img)){
    
    cv::imshow("Opencv", img);
    
    cv::waitKey(33);
    
}

    The same code works on Ubuntu 12.04 with the same version of OpenCV and with the ffmpeg build by myself.
    What is wrong ?

  • Installing full multimedia stack on server (ffmpeg,mp4box,sox,mplayer)

    29 avril 2015, par hdezela

    I’ve had a trusty text file with all(?) the steps I need to set up a full multimedia stack on a RHEL compatible server (CentOS, AWS Linux, etc.) for a few years now. However, sometimes some things are missing and I need to revise it. I know it is not complete so I’m asking for suggestions/modifications in order to get a good - and public - list of how to install all this stuff easily.

    Ideally, I want to be able to run through the file and end up with a system that’ll take any media file and be able to convert/encode/decode/whatever with it.

    This is what I have :

    yum install mesa-libGL-devel mesa-libGLU-devel libXi-devel libXmu-devel freeglut-devel freeglut ncurses-devel
    
cd /usr/local/src
    
mkdir /usr/local/src/tmp
    
chmod 777 /usr/local/src/tmp
    
export TMPDIR=/usr/local/src/tmp
    

    
wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz
    
wget http://downloads.xiph.org/releases/ogg/libogg-1.3.2.tar.gz
    
wget http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.4.tar.gz
    
wget http://downloads.xiph.org/releases/theora/libtheora-1.1.1.tar.gz
    
wget ftp://ftp.videolan.org/pub/videolan/x264/snapshots/last_stable_x264.tar.bz2
    
wget http://downloads.sourceforge.net/project/opencore-amr/opencore-amr/opencore-amr-0.1.3.tar.gz
    
wget http://downloads.sourceforge.net/faac/faac-1.28.tar.gz
    
wget http://downloads.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz
    
wget http://webm.googlecode.com/files/libvpx-v1.3.0.zip
    
wget http://downloads.sourceforge.net/project/yamdi/yamdi/1.9/yamdi-1.9.tar.gz
    
wget http://rtmpdump.mplayerhq.hu/download/rtmpdump-2.3.tgz
    
git clone https://github.com/FFmpeg/FFmpeg.git
    
wget http://downloads.sourceforge.net/gpac/gpac-0.5.0.tar.gz
    
wget http://downloads.sourceforge.net/gpac/gpac_extra_libs-0.5.0.tar.gz
    
wget http://www.mplayerhq.hu/MPlayer/releases/codecs/all-20110131.tar.bz2
    
wget http://www.mplayerhq.hu/MPlayer/releases/MPlayer-1.1.tar.xz
    
wget https://bitbucket.org/acoustid/chromaprint/downloads/chromaprint-fpcalc-1.1-linux-x86_64.tar.gz
    
wget http://sourceforge.net/projects/mad/files/madplay/0.15.2b/madplay-0.15.2b.tar.gz
    
wget http://sourceforge.net/projects/mad/files/libmad/0.15.1b/libmad-0.15.1b.tar.gz
    
wget http://sourceforge.net/projects/mad/files/libid3tag/0.15.1b/libid3tag-0.15.1b.tar.gz
    
wget http://sourceforge.net/projects/sox/files/sox/14.4.1/sox-14.4.1.tar.gz
    
wget http://downloads.xiph.org/releases/ao/libao-1.2.0.tar.gz
    
wget http://downloads.sourceforge.net/twolame/twolame-0.3.13.tar.gz
    
wget http://www.mega-nerd.com/libsndfile/files/libsndfile-1.0.25.tar.gz
    
wget http://www.wavpack.com/wavpack-4.70.0.tar.bz2
    
wget http://www.linuxfromscratch.org/patches/blfs/svn/libmad-0.15.1b-fixes-1.patch
    

    
tar zxf yasm-1.3.0.tar.gz
    
tar zxf libogg-1.3.2.tar.gz
    
tar zxf libvorbis-1.3.4.tar.gz
    
tar zxf libtheora-1.1.1.tar.gz
    
tar jxf last_stable_x264.tar.bz2
    
tar zxf opencore-amr-0.1.3.tar.gz
    
tar zxf faac-1.28.tar.gz
    
tar zxf lame-3.99.5.tar.gz
    
unzip libvpx-v1.3.0.zip
    
tar xzf yamdi-1.9.tar.gz
    
tar xzf rtmpdump-2.3.tgz
    
tar zxvf gpac-0.5.0.tar.gz
    
tar zxvf gpac_extra_libs-0.5.0.tar.gz
    
tar jxf all-20110131.tar.bz2
    
tar jxf MPlayer-1.1.tar.xz
    
tar xf chromaprint-fpcalc-1.1-linux-x86_64.tar.gz
    
tar xf madplay-0.15.2b.tar.gz
    
tar xf libmad-0.15.1b.tar.gz
    
tar xf libid3tag-0.15.1b.tar.gz
    
tar xf sox-14.4.1.tar.gz
    
tar xf libao-1.2.0.tar.gz
    
tar xf twolame-0.3.13.tar.gz
    
tar xf libsndfile-1.0.25.tar.gz
    
tar jxf wavpack-4.70.0.tar.bz2
    

    
[YASM]
    
    cd /usr/local/src/yasm-1.3.0
    
    ./configure &amp;&amp; make &amp;&amp; make install
    
    yasm --version
    
    ldconfig
    
[LIBOGG]
    
    cd /usr/local/src/libogg-1.3.2
    
    ./configure &amp;&amp; make clean &amp;&amp; make &amp;&amp; make install
    
    ls /usr/local/lib/libogg*
    
    ldconfig
    
[LIBVORBIS]
    
    cd /usr/local/src/libvorbis-1.3.4
    
    ./configure &amp;&amp; make clean &amp;&amp; make &amp;&amp; make install
    
    ls /usr/local/lib/libvorbis*
    
    ldconfig
    
[LIBTHEORA]
    
    cd /usr/local/src/libtheora-1.1.1
    
    ./configure &amp;&amp; make clean &amp;&amp; make &amp;&amp; make install
    
    ls /usr/local/lib/libtheora*
    
    ldconfig
    
[x264]
    
    cd /usr/local/src/x264-snapshot-[***]
    
    ./configure --enable-shared &amp;&amp; make clean &amp;&amp; make &amp;&amp; make install
    
    ls /usr/local/lib/libx264*
    
    ldconfig
    
[AMR]
    
    cd /usr/local/src/opencore-amr-0.1.3
    
    ./configure &amp;&amp; make clean &amp;&amp; make &amp;&amp; make install
    
    ls /usr/local/lib/libopencore*
    
    ldconfig
    
[FAAC]
    
    cd /usr/local/src/faac-1.28
    
    vi /usr/local/src/faac-1.28/common/mp4v2/mpeg4ip.h [ELIMINAR]:char *strcasestr(const char *haystack, const char *needle);
    
    ./configure &amp;&amp; make &amp;&amp; make install
    
    ls /usr/local/lib/libfaac*
    
    ldconfig
    
[LAME]
    
    cd /usr/local/src/lame-3.99.5
    
    ./configure &amp;&amp; make clean &amp;&amp; make &amp;&amp; make install
    
    ls /usr/local/lib/libmp3lame*
    
    ldconfig
    
[GPAC+MP4BOX]
    
    cd  /sr/local/src/gpac
    
    cp -r ../gpac_extra_libs/* extra_lib/
    
    chmod +x configure
    
    ./configure
    
    make lib
    
    make apps
    
    make install-lib
    
    make install
    
    cp bin/gcc/libgpac.so /usr/lib
    
    ldconfig
    
[LIBVPX]
    
    cd /usr/local/src/libvpx-v1.3.0
    
    ./configure --enable-vp8  --enable-pic --enable-shared &amp;&amp; make &amp;&amp; make install
    
    ls /usr/local/lib/libvpx*
    
    ldconfig
    
[LIBRTMP]
    
    cd /usr/local/src/rtmpdump-2.3
    
    make SYS=posix
    
    make install
    
    ls /usr/local/lib/librtm*
    
    ldconfig
    
[FFMPEG]
    
    cd /usr/local/src/FFmpeg
    
    export PKG_CONFIG_PATH="${PKG_CONFIG_PATH}:/usr/local/lib/pkgconfig"
    
    ./configure  --enable-gpl --enable-version3 --enable-nonfree --enable-shared --enable-libmp3lame --enable-libx264 --enable-libfaac --enable-libvpx --enable-libvorbis --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopencore-amrnb  --enable-libtheora --enable-librtmp
    
    make clean &amp;&amp; make &amp;&amp; make install
    
    make tools/qt-faststart
    
    cp tools/qt-faststart /usr/local/bin/
    
    ldconfig
    
    ffmpeg
    
    qt-faststart
    
[MPLAYER]
    
    mv /usr/local/src/all-20110131 /usr/local/lib/codecs/
    
    chmod -R 755 /usr/local/lib/codecs/
    
    cd MPlayer-1-1
    
    make clean
    
    ./configure &amp;&amp; make &amp;&amp; make install
    
    ldconfig
    
[YAMDI]
    
    cd /usr/local/src/yamdi-1.9
    
    gcc yamdi.c -o yamdi -O2 -Wall
    
    strip yamdi
    
    cp yamdi /usr/bin/yamdi
    
    yamdi -h
    
[MEDIAINFO]
    
    rpm -ivh http://downloads.sourceforge.net/zenlib/libzen0-0.4.31-1.x86_64.CentOS_6.rpm
    
    rpm -ivh http://sourceforge.net/projects/mediainfo/files/binary/libmediainfo0/0.7.73/libmediainfo0-0.7.73-1.x86_64.CentOS_6.rpm
    
    rpm -ivh http://sourceforge.net/projects/mediainfo/files/binary/mediainfo/0.7.73/mediainfo-0.7.73-1.x86_64.CentOS_6.rpm
    
[CHROMAPRINT]
    
    cp /usr/local/src/chromaprint-fpcalc-1.1-linux-x86_64/fpcalc /usr/local/bin/fpcalc
    
[LIBAO]
    
    cd /usr/local/src/libao-1.2.0
    
    ./configure
    
    make
    
    make install
    
    ldconfig
    
[LIBSND]
    
    cd /usr/local/src/libsndfile-1.0.25
    
    ./configure
    
    make
    
    make install
    
    ldconfig
    
[TWOLAME]
    
    cd /usr/local/src/twolame-0.3.13
    
    ./configure
    
    make
    
    make install
    
    ldconfig
    
[WAVPACK]
    
    cd /usr/local/src/wavpack-4.70.0
    
    ./configure
    
    make
    
    make install
    
    ldconfig
    
[LIBMAD]
    
    cd /usr/local/src/libmad-0.15.1b
    
    patch -Np1 -i ../libmad-0.15.1b-fixes-1.patch
    
    sed "s@AM_CONFIG_HEADER@AC_CONFIG_HEADERS@g" -i configure.ac
    
    touch NEWS AUTHORS ChangeLog
    
    autoreconf -fi
    
    ./configure --enable-shared
    
    make
    
    make install
    
    ldconfig
    
[ID3]
    
    cd /usr/local/src/libid3tag-0.15.1b
    
    ./configure --enable-shared
    
    make
    
    make install
    
    ldconfig
    
[MADPLAY]
    
    cd /usr/local/src/madplay-0.15.2b
    
    ./configure --enable-shared
    
    make
    
    make install
    
    ldconfig
    
[SOX]
    
    cd /usr/local/src/sox-14.4.1
    
    ./configure
    
    make -s
    
    make install
    
    ldconfig

  • Is possible to make watermark film with libav without decoding full video ?

    2 août 2018, par hawk.hsieh

    Ther is a small png image and a video film.
    I want to overlay this png image into video film and I did it by libavcodec.
    The CPU loading of this overlay process is extermely high.
    To reduce the performance impact, I have the png overlaid in 10 seconds and then copy stream from old file to new ones after 10 seconds.
    The problem is, the video is ok before 10 seconds with png overlaid video.
    After 10 seconds, the video is stalled and begin to show abnormal green block at top of the screen.
    I figure out the spspps maybe different between the original stream and the transcoded stream. Is this a root to cause the video stalled after 10 seconds ?

    Thank you.

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