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Autres articles (66)

  • Qualité du média après traitement

    21 juin 2013, par

    Le bon réglage du logiciel qui traite les média est important pour un équilibre entre les partis ( bande passante de l’hébergeur, qualité du média pour le rédacteur et le visiteur, accessibilité pour le visiteur ). Comment régler la qualité de son média ?
    Plus la qualité du média est importante, plus la bande passante sera utilisée. Le visiteur avec une connexion internet à petit débit devra attendre plus longtemps. Inversement plus, la qualité du média est pauvre et donc le média devient dégradé voire (...)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

Sur d’autres sites (13363)

  • ffmpeg giving full path as parameter gives error

    15 juin 2015, par Taufiq Abdur Rahman

    This code works

    ffmpeg.exe -i 1.avi -vf "[in] scale=iw:ih, pad=2*iw:ih [left];movie=2.avi, scale=iw:ih, fade=out:300:30:alpha=1 [right]; [left][right] overlay=main_w/2:0 [out]" -b:v 768k Output1.mp4

    I get an error running this.

    ffmpeg.exe -i "c:\test 14\1.avi" -vf "[in] scale=iw:ih, pad=2*iw:ih [left]; movie="c:\test 14\2.avi", scale=iw:ih, fade=out:300:30:alpha=1 [right]; [left][right] overlay=main_w/2:0 [out]" -b:v 768k "C:\test 15\Output.AVI"

    [Parsed_movie_2 @ 04183780] Failed to avformat_open_input ’C’
    [AVFilterGraph @ 02be04e0] Error initializing filter ’movie’ with args
    ’c :\test 14\2.avi’ Error opening filters !

    What am I doing 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 && make && make install
    
    yasm --version
    
    ldconfig
    
[LIBOGG]
    
    cd /usr/local/src/libogg-1.3.2
    
    ./configure && make clean && make && make install
    
    ls /usr/local/lib/libogg*
    
    ldconfig
    
[LIBVORBIS]
    
    cd /usr/local/src/libvorbis-1.3.4
    
    ./configure && make clean && make && make install
    
    ls /usr/local/lib/libvorbis*
    
    ldconfig
    
[LIBTHEORA]
    
    cd /usr/local/src/libtheora-1.1.1
    
    ./configure && make clean && make && make install
    
    ls /usr/local/lib/libtheora*
    
    ldconfig
    
[x264]
    
    cd /usr/local/src/x264-snapshot-[***]
    
    ./configure --enable-shared && make clean && make && make install
    
    ls /usr/local/lib/libx264*
    
    ldconfig
    
[AMR]
    
    cd /usr/local/src/opencore-amr-0.1.3
    
    ./configure && make clean && make && 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 && make && make install
    
    ls /usr/local/lib/libfaac*
    
    ldconfig
    
[LAME]
    
    cd /usr/local/src/lame-3.99.5
    
    ./configure && make clean && make && 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 && make && 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 && make && 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 && make && 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

  • How can I create a FULL copy of a decoder ?

    28 avril 2015, par damicolo

    I’m writing a video decoder (using FFMPEG/AVCodec) for a custom implementation of an mpeg4 video stream. The peculiarity of this video stream is that it could split into many "son" streams creating many P frames based on the same parent. The video stream I’m trying to decode is actually a sort of "video tree". Something like this :

    I <--P <--P <---------------------P <-------------- P <------------ P
    
           \ <--P <--P <--P        \ <--P <--P       \ <--P <--P

    I’ve already wrote a basic decoder which works fine when I decide to follow one path, the problem is when I try to follow more than one path in the video tree. At this point I need to "fork" my decoder to follow two different video streams. the split could occur not only after a key frame, but even after a P frame, so I need to duplicate the AVCodecContext (I use avcodec_copy_context) but it seems to create new decoder from a clean status.. it seems to ignore the previous video status, so the decoded P frames are "applied" to an empty video frame.
    Probably copying the context using avcodec_copy_context is not enough... Any suggestion ? How can I duplicate the context and the complete status of the decoder ?
    Or, is there any other way to decode my stream using references ?
    Thanks !

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