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  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

Sur d’autres sites (5191)

  • How do I remux/transcode a progressive file in ffmpeg ?

    3 décembre 2014, par Levi Roberts

    Here’s what I’m trying to do.

    My primary objective is to remux or transcode a currently downloading media file for AppleTV and iOS compatible streaming.

    I am doing this by looking at the media file and only transcoding when necessary, otherwise it will only alter the container the video/audio lives in. This will reduce overhead for files that are already compatible. The specific compatible output I am looking for is AppleTV3 and iOS.

    I have a file that is progressive, meaning that it is downloading using another download manager or another app without the help of nodejs. This file may or may not have the moov information available in the beginning of the file. It just so happens, that I believe my test file does.

    I have some code that is partially working and it would make sense to be able to get this code fully working. That said, I’m not dismissing alternative ways to do this.

    My primary problem (I think) has to do with the moov header location or that it’s being set incorrectly. I’m hoping the fix is as simple as correcting my poor ffmpeg knowledge with command line parameters.

    I am piping the file to and from ffmpeg via GrowingFile and fs.createWriteStream respectively.

    My code for doing so is :

    var fs = require('fs');
    
var child = require('child_process');
    

    
var GrowingFile = require('growing-file');
    
var input_file = GrowingFile.open('./tmp/input.mp4');
    
var output_file = fs.createWriteStream('./tmp/output.m4v');
    

    
// I've tried various args and ffmpeg params here without success.
    
var args = ['-re', '-i', 'pipe:0', '-g', '52', '-ab', '64k', '-vcodec', 'libx264', '-vb', '448k', '-f', 'mp4', '-movflags', 'frag_keyframe+faststart', 'pipe:1'];
    
var trans_proc = child.spawn('ffmpeg', args, null); 
    

    
input_file.pipe(trans_proc.stdin);
    
trans_proc.stdout.pipe(output_file);

    I am also temporarily trying to make these files work as intended via ffmpeg command line alone, without success. That command is :

    ffmpeg -i original.mp4 -vcodec copy -r 24 output.m4v

    Snippet of original.mp4 via mediainfo :

    General
    
Format                                   : MPEG-4
    
Format profile                           : Base Media / Version 2
    
Codec ID                                 : mp42
    
File size                                : 9.87 MiB
    
Duration                                 : 43mn 14s
    
Overall bit rate mode                    : Variable
    
Overall bit rate                         : 31.9 Kbp
    

    
Video
    
Format                                   : AVC
    
Format/Info                              : Advanced Video Codec
    
Format profile                           : High@L2.1
    
Codec ID                                 : avc1
    
Duration                                 : 43mn 14s
    
Width                                    : 480 pixels
    
Height                                   : 268 pixels
    
Color space                              : YUV
    
Scan type                                : Progressive
    
Stream size                              : 67.5 MiB
    

    
Audio
    
Format                                   : AAC
    
Format/Info                              : Advanced Audio Codec
    
Format profile                           : LC
    
Codec ID                                 : 40
    
Duration                                 : 43mn 14s
    
Bit rate mode                            : Variable
    
Bit rate                                 : 96.0 Kbps

    What’s happening is that output.m4v has an incorrect duration of only the part of the file that’s already downloaded. The video reaches the end or a refresh happens to make the duration longer. This process repeats until the original file is done downloading. What I want is to be able to emulate/clone the duration of the input file to the output file .

  • Get video pixel data from Exoplayer in Android

    25 février 2018, par Oliver Metz

    Is it possible to grab the pixel data (e.g. as RGB byte array) from a running video within the ExoPlayer ? Ideally as the real video resolution and not the size as the shown View. I’d want to forward that data to OpenCV for ImageProcessing purposes.

    Alternatively I’m looking for a robust (ffmpeg based) Android framework to input videos into OpenCV where the input might be IP-Cameras, local files, online files and online streams.

    Any help is appreciated.

  • using ffmpeg for development, libavutil/error environment not OK

    26 février 2018, par luoyanghero

    I want to build a latest ffmpeg development library. I refered the docker script
    ’https://github.com/jrottenberg/ffmpeg/blob/master/docker-images/3.4/Dockerfile’,
    and I changed the docker file to a shell file. Download all source files,
    compile all dependency source and ffmpeg 3.4.1 source.
    The following is my changed shell script.

    #!/bin/sh
    
export           PKG_CONFIG_PATH=/opt/ffmpeg/lib/pkgconfig
    
           LD_LIBRARY_PATH=/opt/ffmpeg/lib
    
           PREFIX=/opt/ffmpeg
    
           MAKEFLAGS="-j4"
    

    
export         FFMPEG_VERSION=3.4.1     
    
export         FDKAAC_VERSION=0.1.5    
    
export         LAME_VERSION=3.99.5     
    
export         LIBASS_VERSION=0.13.7   
    
export         OGG_VERSION=1.3.2       
    
export         OPENCOREAMR_VERSION=0.1.4
    
export         OPUS_VERSION=1.2        
    
export         OPENJPEG_VERSION=2.1.2 
    
export         THEORA_VERSION=1.1.1   
    
export         VORBIS_VERSION=1.3.5  
    
export         VPX_VERSION=1.6.1    
    
export         X264_VERSION=20170226-2245-stable 
    
export         X265_VERSION=2.3          
    
export         XVID_VERSION=1.3.4       
    
export         FREETYPE_VERSION=2.5.5  
    
export         FRIBIDI_VERSION=0.19.7 
    
export         FONTCONFIG_VERSION=2.12.4 
    
export         LIBVIDSTAB_VERSION=1.1.0 
    
            SRC=/usr/local
    

    
            OGG_SHA256SUM="e19ee34711d7af328cb26287f4137e70630e7261b17cbe3cd41011d73a654692  libogg-1.3.2.tar.gz"
    
            OPUS_SHA256SUM="77db45a87b51578fbc49555ef1b10926179861d854eb2613207dc79d9ec0a9a9  opus-1.2.tar.gz"
    
            VORBIS_SHA256SUM="6efbcecdd3e5dfbf090341b485da9d176eb250d893e3eb378c428a2db38301ce  libvorbis-1.3.5.tar.gz"
    
            THEORA_SHA256SUM="40952956c47811928d1e7922cda3bc1f427eb75680c3c37249c91e949054916b  libtheora-1.1.1.tar.gz"
    
            XVID_SHA256SUM="4e9fd62728885855bc5007fe1be58df42e5e274497591fec37249e1052ae316f  xvidcore-1.3.4.tar.gz"
    
            FREETYPE_SHA256SUM="5d03dd76c2171a7601e9ce10551d52d4471cf92cd205948e60289251daddffa8  freetype-2.5.5.tar.gz"
    
            LIBVIDSTAB_SHA256SUM="14d2a053e56edad4f397be0cb3ef8eb1ec3150404ce99a426c4eb641861dc0bb  v1.1.0.tar.gz"
    
            LIBASS_SHA256SUM="8fadf294bf701300d4605e6f1d92929304187fca4b8d8a47889315526adbafd7  0.13.7.tar.gz"
    
            FRIBIDI_SHA256SUM="3fc96fa9473bd31dcb5500bdf1aa78b337ba13eb8c301e7c28923fea982453a8  0.19.7.tar.gz"
    

    

    
        apt-get -y update
    
        apt-get install -y  --no-install-recommends ca-certificates expat libgomp1
    
        apt-get autoremove -y
    
        apt-get clean -y
    
apt-get install -y --no-install-recommends autoconf 
    
apt-get install -y --no-install-recommends automake
    
apt-get install -y --no-install-recommends cmake 
    
apt-get install -y --no-install-recommends curl 
    
apt-get install -y --no-install-recommends bzip2 
    
apt-get install -y --no-install-recommends libexpat1-dev
    
apt-get install -y --no-install-recommends g++ 
    
apt-get install -y --no-install-recommends gcc 
    
apt-get install -y --no-install-recommends git 
    
apt-get install -y --no-install-recommends gperf 
    
apt-get install -y --no-install-recommends libtool 
    
apt-get install -y --no-install-recommends make 
    
apt-get install -y --no-install-recommends nasm 
    
apt-get install -y --no-install-recommends perl
    
apt-get install -y --no-install-recommends pkg-config 
    
apt-get install -y --no-install-recommends python 
    
apt-get install -y --no-install-recommends libssl-dev 
    
apt-get install -y --no-install-recommends yasm 
    
apt-get install -y --no-install-recommends zlib1g-dev
    

    
############LIB env
    
## opencore-amr https://sourceforge.net/projects/opencore-amr/
    
####OnLine     
    
#        DIR=/tmp/opencore-amr && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sL https://downloads.sf.net/project/opencore-amr/opencore-amr/opencore-amr-${OPENCOREAMR_VERSION}.tar.gz | \
    
#        tar -zx --strip-components=1 && \
    
#        ./configure --prefix="${PREFIX}" --enable-shared  && \
    
#        make && \
    
#        make install && \
    
#        rm -rf ${DIR} 
    
##curl -sL https://downloads.sf.net/project/opencore-amr/opencore-amr/opencore-amr-0.1.4.tar.gz | tar -zx --strip-components=1 
    

    
####OffLine     
    
        DIR=opencore-amr-${OPENCOREAMR_VERSION} && \
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        ./configure --prefix="${PREFIX}" --enable-shared  && \
    
        make && \
    
        make install && \
    
        cd .. 
    
### x264 http://www.videolan.org/developers/x264.html
    
#     
    
#        DIR=/tmp/x264 && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sL https://download.videolan.org/pub/videolan/x264/snapshots/x264-snapshot-${X264_VERSION}.tar.bz2 | \
    
#        tar -jx --strip-components=1 && \
    
#        ./configure --prefix="${PREFIX}" --enable-shared --enable-pic --disable-cli && \
    
#        make && \
    
#        make install && \
    
#        rm -rf ${DIR}
    
####OffLine     
    
        DIR=x264-snapshot-${X264_VERSION}
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.bz2 && \
    
        cd ./${DIR} && \
    
        ./configure --prefix="${PREFIX}" --enable-shared --enable-pic --disable-cli && \
    
        make && \
    
        make install && \
    
        cd .. 
    
#### x265 http://x265.org/
    
#     
    
#        DIR=/tmp/x265 && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sL https://download.videolan.org/pub/videolan/x265/x265_${X265_VERSION}.tar.gz  | \
    
#        tar -zx && \
    
#        cd x265_${X265_VERSION}/build/linux && \
    
#        sed -i "/-DEXTRA_LIB/ s/$/ -DCMAKE_INSTALL_PREFIX=\/opt\/ffmpeg/" multilib.sh && \
    
#        sed -i "/^cmake/ s/$/ -DENABLE_CLI=OFF/" multilib.sh && \
    
#        ./multilib.sh && \
    
#        make -C 8bit install 
    
###        rm -rf ${DIR}
    
####OffLine     
    
        DIR=x265_${X265_VERSION}
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR}/build/linux && \
    
        sed -i "/-DEXTRA_LIB/ s/$/ -DCMAKE_INSTALL_PREFIX=\/opt\/ffmpeg/" multilib.sh && \
    
        sed -i "/^cmake/ s/$/ -DENABLE_CLI=OFF/" multilib.sh && \
    
        ./multilib.sh && \
    
        make -C 8bit install 
    
        cd ../../../
    
#### libogg https://www.xiph.org/ogg/
    
#     
    
#        DIR=/tmp/ogg && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sLO http://downloads.xiph.org/releases/ogg/libogg-${OGG_VERSION}.tar.gz && \
    
#        echo ${OGG_SHA256SUM} | sha256sum --check && \
    
#        tar -zx --strip-components=1 -f libogg-${OGG_VERSION}.tar.gz && \
    
#        ./configure --prefix="${PREFIX}" --enable-shared  && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    
####OffLine     
    
        DIR=libogg-${OGG_VERSION}
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        ./configure --prefix="${PREFIX}" --enable-shared  && \
    
        make && \
    
        make install && \
    
        cd .. 
    
#### libopus https://www.opus-codec.org/
    
#     
    
#        DIR=/tmp/opus && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sLO https://archive.mozilla.org/pub/opus/opus-${OPUS_VERSION}.tar.gz && \
    
#        echo ${OPUS_SHA256SUM} | sha256sum --check && \
    
#        tar -zx --strip-components=1 -f opus-${OPUS_VERSION}.tar.gz && \
    
#        autoreconf -fiv && \
    
#        ./configure --prefix="${PREFIX}" --enable-shared && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    
####OffLine     
    
        DIR=opus-${OPUS_VERSION}
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        autoreconf -fiv && \
    
        ./configure --prefix="${PREFIX}" --enable-shared && \
    
        make && \
    
        make install && \
    
        cd .. 
    
#### libvorbis https://xiph.org/vorbis/
    
#     
    
#        DIR=/tmp/vorbis && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sLO http://downloads.xiph.org/releases/vorbis/libvorbis-${VORBIS_VERSION}.tar.gz && \
    
#        echo ${VORBIS_SHA256SUM} | sha256sum --check && \
    
#        tar -zx --strip-components=1 -f libvorbis-${VORBIS_VERSION}.tar.gz && \
    
#        ./configure --prefix="${PREFIX}" --with-ogg="${PREFIX}" --enable-shared && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    
####OffLine     
    
        DIR=libvorbis-${VORBIS_VERSION}
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        ./configure --prefix="${PREFIX}" --with-ogg="${PREFIX}" --enable-shared && \
    
        make && \
    
        make install && \
    
        cd .. 
    
#### libtheora http://www.theora.org/
    
#     
    
#        DIR=/tmp/theora && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sLO http://downloads.xiph.org/releases/theora/libtheora-${THEORA_VERSION}.tar.gz && \
    
#        echo ${THEORA_SHA256SUM} | sha256sum --check && \
    
#        tar -zx --strip-components=1 -f libtheora-${THEORA_VERSION}.tar.gz && \
    
#        ./configure --prefix="${PREFIX}" --with-ogg="${PREFIX}" --enable-shared && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    
####OffLine     
    
        DIR=libtheora-${THEORA_VERSION}
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        ./configure --prefix="${PREFIX}" --with-ogg="${PREFIX}" --enable-shared && \
    
        make && \
    
        make install && \
    
        cd .. 
    
#### libvpx https://www.webmproject.org/code/
    
#     
    
#        DIR=/tmp/vpx && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sL https://codeload.github.com/webmproject/libvpx/tar.gz/v${VPX_VERSION} | \
    
#        tar -zx --strip-components=1 && \
    
#        ./configure --prefix="${PREFIX}" --enable-vp8 --enable-vp9 --enable-pic --enable-shared \
    
#        --disable-debug --disable-examples --disable-docs --disable-install-bins  && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    

    
#####OffLine     
    
        DIR=libvpx-1.6.1
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        ./configure --prefix="${PREFIX}" --enable-vp8 --enable-vp9 --enable-pic --enable-shared \
    
        --disable-debug --disable-examples --disable-docs --disable-install-bins  && \
    
        make && \
    
        make install && \
    
        cd .. 
    
#### libmp3lame http://lame.sourceforge.net/
    
#     
    
#        DIR=/tmp/lame && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sL https://downloads.sf.net/project/lame/lame/${LAME_VERSION%.*}/lame-${LAME_VERSION}.tar.gz | \
    
#        tar -zx --strip-components=1 && \
    
#        ./configure --prefix="${PREFIX}" --bindir="${PREFIX}/bin" --enable-shared --enable-nasm --enable-pic --disable-frontend && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    

    
####OffLine     
    
        DIR=lame-3.99.5
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        ./configure --prefix="${PREFIX}" --bindir="${PREFIX}/bin" --enable-shared --enable-nasm --enable-pic --disable-frontend && \
    
        make && \
    
        make install && \
    
        cd .. 
    
#### xvid https://www.xvid.com/
    
#     
    
#        DIR=/tmp/xvid && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sLO http://downloads.xvid.org/downloads/xvidcore-${XVID_VERSION}.tar.gz && \
    
#        echo ${XVID_SHA256SUM} | sha256sum --check && \
    
#        tar -zx -f xvidcore-${XVID_VERSION}.tar.gz && \
    
#        cd xvidcore/build/generic && \
    
#        ./configure --prefix="${PREFIX}" --bindir="${PREFIX}/bin" --datadir="${DIR}" --enable-shared --enable-shared && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    

    
####OffLine     
    
        DIR=xvidcore
    
        BASE_DIR=`pwd`
    
        rm -rf ./${DIR}-1.3.4
    
        tar -xvf ./${DIR}-1.3.4.tar.gz && \
    
        cd ./${DIR} && \
    
        cd ./build/generic && \
    
        ./configure --prefix="${PREFIX}" --bindir="${PREFIX}/bin" --datadir="${BASE_DIR}/${DIR}" --enable-shared --enable-shared && \
    
        make && \
    
        make install && \
    
        cd ../../../ 
    
#### fdk-aac https://github.com/mstorsjo/fdk-aac
    
#     
    
#        DIR=/tmp/fdk-aac && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sL https://github.com/mstorsjo/fdk-aac/archive/v${FDKAAC_VERSION}.tar.gz | \
    
#        tar -zx --strip-components=1 && \
    
#        autoreconf -fiv && \
    
#        ./configure --prefix="${PREFIX}" --enable-shared --datadir="${DIR}" && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    

    
####OffLine     
    
        BASE_DIR=`pwd`
    
        DIR=fdk-aac-0.1.5
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        autoreconf -fiv && \
    
        ./configure --prefix="${PREFIX}" --enable-shared --datadir="${BASE_DIR}/${DIR}" && \
    
        make && \
    
        make install && \
    
        cd .. 
    
## openjpeg https://github.com/uclouvain/openjpeg
    

    
#        DIR=/tmp/openjpeg && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sL https://github.com/uclouvain/openjpeg/archive/v${OPENJPEG_VERSION}.tar.gz | \
    
#        tar -zx --strip-components=1 && \
    
#        cmake -DBUILD_THIRDPARTY:BOOL=ON -DCMAKE_INSTALL_PREFIX="${PREFIX}" . && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    

    
####OffLine     
    
        DIR=openjpeg-2.1.2
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        cmake -DBUILD_THIRDPARTY:BOOL=ON -DCMAKE_INSTALL_PREFIX="${PREFIX}" . && \
    
        make && \
    
        make install && \
    
        cd .. 
    
### freetype https://www.freetype.org/
    
##RUN  \
    
##        DIR=/tmp/freetype && \
    
##        mkdir -p ${DIR} && \
    
##        cd ${DIR} && \
    
##        curl -sLO http://download.savannah.gnu.org/releases/freetype/freetype-${FREETYPE_VERSION}.tar.gz && \
    
##        echo ${FREETYPE_SHA256SUM} | sha256sum --check && \
    
##        tar -zx --strip-components=1 -f freetype-${FREETYPE_VERSION}.tar.gz && \
    
##        ./configure --prefix="${PREFIX}" --disable-static --enable-shared && \
    
##        make && \
    
##        make install && \
    
##        rm -rf ${DIR}
    

    
###OffLine     
    
        DIR=freetype-${FREETYPE_VERSION}
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        ./configure --prefix="${PREFIX}" --disable-static --enable-shared && \
    
        make && \
    
        make install && \
    
        cd .. 
    

    
### libvstab https://github.com/georgmartius/vid.stab
    
#
    
#        DIR=/tmp/vid.stab && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sLO https://github.com/georgmartius/vid.stab/archive/v${LIBVIDSTAB_VERSION}.tar.gz &&\
    
#        echo ${LIBVIDSTAB_SHA256SUM} | sha256sum --check && \
    
#        tar -zx --strip-components=1 -f v${LIBVIDSTAB_VERSION}.tar.gz && \
    
#        cmake -DCMAKE_INSTALL_PREFIX="${PREFIX}" . && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    

    
####OffLine     
    
        DIR=vid.stab
    
        rm -rf ./${DIR}-1.1.0
    
        tar -xvf ./${DIR}_v1.1.0.tar.gz && \
    
        cd ./${DIR}-1.1.0 && \
    
        cmake -DCMAKE_INSTALL_PREFIX="${PREFIX}" . && \
    
        make && \
    
        make install && \
    
        cd .. 
    
### fridibi https://www.fribidi.org/
    
# + https://github.com/fribidi/fribidi/issues/8
    
#
    
#        DIR=/tmp/fribidi && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sLO https://github.com/fribidi/fribidi/archive/${FRIBIDI_VERSION}.tar.gz && \
    
#        echo ${FRIBIDI_SHA256SUM} | sha256sum --check && \
    
#        tar -zx --strip-components=1 -f ${FRIBIDI_VERSION}.tar.gz && \
    
#        sed -i 's/^SUBDIRS =.*/SUBDIRS=gen.tab charset lib/' Makefile.am && \
    
#        ./bootstrap --no-config && \
    
#        ./configure -prefix="${PREFIX}" --disable-static --enable-shared && \
    
#        make && \
    
#        make install
    
#        rm -rf ${DIR}
    

    
####OffLine     
    
        DIR=fribidi-0.19.7 && \
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.gz && \
    
        cd ./${DIR} && \
    
        sed -i 's/^SUBDIRS =.*/SUBDIRS=gen.tab charset lib/' Makefile.am && \
    
        ./bootstrap --no-config && \
    
        ./configure -prefix="${PREFIX}" --disable-static --enable-shared && \
    
        make && \
    
        make install && \
    
        cd .. 
    
### fontconfig https://www.freedesktop.org/wiki/Software/fontconfig/
    

    
#        DIR=/tmp/fontconfig && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sLO https://www.freedesktop.org/software/fontconfig/release/fontconfig-${FONTCONFIG_VERSION}.tar.bz2 &&\
    
#        tar -jx --strip-components=1 -f fontconfig-${FONTCONFIG_VERSION}.tar.bz2 && \
    
#        ./configure -prefix="${PREFIX}" --disable-static --enable-shared && \
    
#        make && \
    
#        make install
    
##        rm -rf ${DIR}
    

    
####OffLine     
    
        DIR=fontconfig-2.12.4 && \
    
        rm -rf ./${DIR}
    
        tar -xvf ./${DIR}.tar.bz2 && \
    
        cd ./${DIR} && \
    
        ./configure -prefix="${PREFIX}" --disable-static --enable-shared && \
    
        make && \
    
        make install && \
    
        cd .. 
    
## libass https://github.com/libass/libass
    
#need add PKG_CONFIG_PATH
    
#
    
#        DIR=/tmp/libass && \
    
#        rm -rf ${DIR} && \
    
#        mkdir -p ${DIR} && \
    
#        cd ${DIR} && \
    
#        curl -sLO https://github.com/libass/libass/archive/${LIBASS_VERSION}.tar.gz &&\
    
#        echo ${LIBASS_SHA256SUM} | sha256sum --check && \
    
#        tar -zx --strip-components=1 -f ${LIBASS_VERSION}.tar.gz && \
    
#        ./autogen.sh && \
    
#        ./configure --prefix="${PREFIX}" --disable-static --enable-shared && \
    
#        make && \
    
#        make install 
    
##        rm -rf ${DIR}
    

    
####OffLine     
    
        DIR=libass && \
    
        rm -rf ./${DIR}-0.13.7
    
        tar -xvf ./${DIR}_0.13.7.tar.gz && \
    
        cd ./${DIR}-0.13.7 && \
    
        ./autogen.sh && \
    
        ./configure --prefix="${PREFIX}" --disable-static --enable-shared && \
    
        make && \
    
        make install && \
    
        cd .. 
    
### ffmpeg https://ffmpeg.org/
    

    
#####OffLine
    
        DIR=ffmpeg341 && \
    
        mkdir -p ${DIR} && cd ${DIR} && \
    
        rm -rf ffmpeg-${FFMPEG_VERSION} && \
    
        tar -xvf ffmpeg-${FFMPEG_VERSION}.tar.gz && \
    
        cd ffmpeg-${FFMPEG_VERSION} && \
    
        ./configure \
    
        --enable-debug \
    
        --enable-doc \
    
        --disable-ffplay \
    
        --enable-shared \
    
        --enable-avresample \
    
        --enable-libopencore-amrnb \
    
        --enable-libopencore-amrwb \
    
        --enable-gpl \
    
        --enable-libass \
    
        --enable-libfreetype \
    
        --enable-libvidstab \
    
        --enable-libmp3lame \
    
        --enable-libopenjpeg \
    
        --enable-libopus \
    
        --enable-libtheora \
    
        --enable-libvorbis \
    
        --enable-libvpx \
    
        --enable-libx265 \
    
        --enable-libxvid \
    
        --enable-libx264 \
    
        --enable-nonfree \
    
        --enable-openssl \
    
        --enable-libfdk_aac \
    
        --enable-postproc \
    
        --enable-small \
    
        --enable-version3 \
    
        --extra-cflags="-I${PREFIX}/include" \
    
        --extra-ldflags="-L${PREFIX}/lib" \
    
        --extra-libs=-ldl \
    
        --prefix="${PREFIX}" && \
    
        make && \
    
        make install && \
    
        make distclean && \
    
        hash -r && \
    
        cd tools && \
    
        make qt-faststart && \
    
        cp qt-faststart ${PREFIX}/bin
    
         cd ../../

    I try to run my compiled ffmpeg, it is OK.

    #

    export LD_LIBRARY_PATH=/opt/ffmpeg/lib/
    
/opt/ffmpeg/bin/ffmpeg -i "/home/luoy/Videos/芳华.2017.TC720P独家高清中字.mp4" -ss 00:00:00 -t 00:00:01 -f image2 -y "./2_%04d.bmp"
    
ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
    
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.6) 20160609
    
configuration: --enable-debug --enable-doc --disable-ffplay --enable-shared --enable-avresample --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-gpl --enable-libass --enable-libfreetype --enable-libvidstab --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx265 --enable-libxvid --enable-libx264 --enable-nonfree --enable-openssl --enable-libfdk_aac --enable-postproc --enable-small --enable-version3 --extra-cflags=-I/opt/ffmpeg/include --extra-ldflags=-L/opt/ffmpeg/lib --extra-libs=-ldl --prefix=/opt/ffmpeg
    
libavutil 55. 78.100 / 55. 78.100
    
libavcodec 57.107.100 / 57.107.100
    
libavformat 57. 83.100 / 57. 83.100
    
libavdevice 57. 10.100 / 57. 10.100
    
libavfilter 6.107.100 / 6.107.100
    
libavresample 3. 7. 0 / 3. 7. 0
    
libswscale 4. 8.100 / 4. 8.100
    
libswresample 2. 9.100 / 2. 9.100
    
libpostproc 54. 7.100 / 54. 7.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/luoy/Videos/芳华.2017.TC720P独家高清中字.mp4':
    
Metadata:
    
major_brand : isom
    
minor_version : 1
    
compatible_brands: isomavc1
    
creation_time : 2017-12-15T16:28:00.000000Z
    
encoder : Lite MP4 Tool v2.3
    
Duration: 02:09:09.24, start: 0.000000, bitrate: 1587 kb/s
    
Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 1280x720, 1456 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
    
Metadata:
    
creation_time : 2017-12-15T16:28:00.000000Z
    
handler_name : Imported with GPAC 0.4.6-DEV (internal rev. 5)
    
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    
Metadata:
    
creation_time : 2017-12-15T16:28:45.000000Z
    
handler_name : GPAC ISO Audio Handler
    
Stream mapping:
    
Stream #0:0 -> #0:0 (h264 (native) -> bmp (native))
    
Press [q] to stop, [?] for help
    
Output #0, image2, to './2_%04d.bmp':
    
Metadata:
    
major_brand : isom
    
minor_version : 1
    
compatible_brands: isomavc1
    
encoder : Lavf57.83.100
    
Stream #0:0(und): Video: bmp, bgr24, 1280x720, q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default)
    
Metadata:
    
creation_time : 2017-12-15T16:28:00.000000Z
    
handler_name : Imported with GPAC 0.4.6-DEV (internal rev. 5)
    
encoder : Lavc57.107.100 bmp
    
frame= 24 fps=0.0 q=-0.0 Lsize=N/A time=00:00:01.00 bitrate=N/A dup=1 drop=0 speed= 5.6x
    
video:64801kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

    #

    Now I write a simple code, save as a 0_hello_world.c file.

    #

    #include "libavcodec/avcodec.h"
    
#include "libavformat/avformat.h"
    
#include 
    
#include 
    
#include 
    
#include 
    
#include 
    
#include 
    
#include 
    
#include "libavutil/error.h"
    
int main(int argc, const char *argv[])
    
{
    
av_register_all();
    
int response = 0;
    
char *pchar;
    
// pchar = av_err2str(response);
    
return 0;
    
}

    #

    Use the follow command for make, it’s OK.

    #

    gcc -g -Wall -o build/hello_world -lz 0_hello_world.c 
    
-lavformat -lavcodec -lswscale 
    
-I/opt/ffmpeg/include -L/opt/ffmpeg/lib

    #

    But when I use the "av_err2str" function(uncomment this line) :
    ’pchar = av_err2str(response) ;’
    compile show the following error :

    #

    gcc -g -Wall -o build/hello_world -lz 0_hello_world.c 
    
-lavformat -lavcodec -lswscale 
    
-I/opt/ffmpeg/include -L/opt/ffmpeg/lib
    
0_hello_world.c: In function ‘main’:
    
0_hello_world.c:16:9: warning: variable ‘pchar’ set but not used [-Wunused-but-set-variable]
    
char *pchar;
    
^
    
/usr/bin/ld: /tmp/ccgJJ9CV.o: undefined reference to symbol 'av_strerror@@LIBAVUTIL_55'
    
/opt/ffmpeg/lib/libavutil.so.55: error adding symbols: DSO missing from command line
    
collect2: error: ld returned 1 exit status
    
Makefile:10: recipe for target 'hello_world' failed
    
make: *** [hello_world] Error 1

    #

    As I know "av_register_all" use the "libavformat/avformat.h" header ; "av_err2str" use the "libavutil/error.h" header.
    Both the two headers I have included, why "av_err2str" is not OK ?
    I guess this is my environment not OK. How can I find the error ?
    I have checked my LD_LIBRARY_PATH, it is OK.

    #

    $ echo $LD_LIBRARY_PATH
    
/opt/ffmpeg/lib:

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