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  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

  • Pas question de marché, de cloud etc...

    10 avril 2011

    Le vocabulaire utilisé sur ce site essaie d’éviter toute référence à la mode qui fleurit allègrement
    sur le web 2.0 et dans les entreprises qui en vivent.
    Vous êtes donc invité à bannir l’utilisation des termes "Brand", "Cloud", "Marché" etc...
    Notre motivation est avant tout de créer un outil simple, accessible à pour tout le monde, favorisant
    le partage de créations sur Internet et permettant aux auteurs de garder une autonomie optimale.
    Aucun "contrat Gold ou Premium" n’est donc prévu, aucun (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (8073)

  • Play audio out through specific output device with ffplay

    4 février 2018, par ComedicChimera

    I just have a quick question regarding ffplay (extension of ffmpeg) for Windows. I am trying to get it to allow me to play audio out of specific device (ie. a virtual audio cable), and I cannot find any documentation on how to do it.

    Here is my current command :

    "ffplay -loglevel panic -nodisp -volume volume -i url"

    I could not find any documentation of how to do this.

    If it is not possible to do this ffplay, I would like to ask if there is away to set a specific audio output device in Python 3 (as that is the language I am using to call ffplay)

    Thanks

  • it's hang when using av_interleaved_write_frame

    19 avril 2018, par Eric Nguyen

    I use the ffmpeg to stream the encoded video.
    when it is streaming, it plug out the internet cable, it means connection to the serve is lost.
    the video is hangs, i can not handle after that. i see the reason that it is hang at av_interleaved_write_frame(), the function doesn’t return result or any error, it hangs forever at there.

    Anyone see that issue, and Can you help me to fix that bug.
    Thanks.

  • building ffmpeg with openh264 configure results in h264 decoder DISabled ?

    7 juillet 2018, par hal497

    I’ve got openh264, built from source, installed locally,

    pkg-config --libs --cflags openh264
    
        -I/usr/local/include -L/usr/local/lib64 -lopenh264

    Building ffmpeg from src

    cd ffmpeg-git
    
    git checkout origin/release/4.0
    
    git clean -xfd
    
    git reset --hard
    
    git pull
    
    git log | head
    
        commit b5106c5aa2ddd00f0c0452432ba8e683a9a06b6f
    
        Author: Aman Gupta <aman@tmm1.net>
    
        Date:   Mon Jun 11 00:43:31 2018 -0700
    

    
            avformat/mpegts: parse large PMTs with multiple tables
    

    
            In 9152c1e4955, the mpegts parser was taught how to parse
    
            PMT sections which contained multiple tables. That commit
    
            fixed parsing of PMT packets from some cable providers,
    
            which included a special SCTE table (0xc0) before the

    with a simple config to ENABLE libopenh264 use

    ./configure --enable-ffmpeg \
    
--prefix=/usr/local --libdir=/usr/local/lib64 \
    
--enable-shared --disable-static --enable-rpath \
    
--enable-libopenh264 --disable-libx264
    
make

    checking the build

    ldd ./ffmpeg | egrep "h264|x264"
    
    (empty)

    there are mixed references to libopenh264 and libx264 (despite my config),

    for l in lib*/*so; do echo $l; ldd $l | egrep "264"; done
    
    libavcodec/libavcodec.so
    
            libopenh264.so.4 => /usr/local/lib64/libopenh264.so.4 (0x00007f82dd74d000)
    
    libavdevice/libavdevice.so
    
            libx264.so.152 => /usr/lib64/libx264.so.152 (0x00007f0575c6f000)
    
    libavfilter/libavfilter.so
    
            libx264.so.152 => /usr/lib64/libx264.so.152 (0x00007f85bae41000)
    
    libavformat/libavformat.so
    
            libx264.so.152 => /usr/lib64/libx264.so.152 (0x00007ff105701000)
    
    libavutil/libavutil.so
    
    libswresample/libswresample.so
    
    libswscale/libswscale.so

    and

    ./ffmpeg -decoders | grep h264

    shows h264 as a disabled decoder, (... —enable-libx264 —disable-libopenh264 ...)

    ffmpeg version n4.0.1-5-gb5106c5aa2 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 8 (SUSE Linux)
    
  configuration: --enable-ffmpeg --prefix=/usr/local --libdir=/usr/local/lib64 --enable-shared --disable-static --enable-optimizations --enable-rpath --disable-doc --enable-nonfree --enable-libopenh264 --disable-libx264
    
  WARNING: library configuration mismatch
    
  avutil      configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
    
  avcodec     configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
    
  avformat    configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
    
  avdevice    configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
    
  avfilter    configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
    
  swscale     configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
    
  swresample  configuration: --prefix=/usr/local --libdir=/usr/local/lib64 --extra-cflags='-grecord-gcc-switches -g -fPIC -I/usr/include/gsm' --disable-static --enable-shared --disable-stripping --enable-optimizations --disable-debug --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-devices --disable-htmlpages --disable-doc --enable-gpl --enable-nonfree --enable-version3 --enable-libx264 --disable-libopenh264 --enable-libfdk-aac --enable-libmp3lame --enable-runtime-cpudetect --enable-postproc --enable-bzlib --enable-swresample --disable-avresample --enable-ladspa --enable-muxers --enable-demuxers --enable-encoders --disable-encoder= --enable-decoders --disable-decoder= --enable-protocol=http --disable-libpulse --enable-pthreads --enable-pic --enable-zlib --disable-mipsdsp --disable-mipsdspr2 --disable-openssl --enable-gnutls --disable-cuda --enable-vaapi --enable-vdpau --enable-libcdio --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-inline-asm --enable-x86asm
    
  libavutil      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
 VFS..D h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
 V..... h264_v4l2m2m         V4L2 mem2mem H.264 decoder wrapper (codec h264)

    The question is — why ? And what needs to change so that libopenh264 is consistently & correctly used ?

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