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Autres articles (45)

  • Utilisation et configuration du script

    19 janvier 2011, par

    Informations spécifiques à la distribution Debian
    Si vous utilisez cette distribution, vous devrez activer les dépôts "debian-multimedia" comme expliqué ici :
    Depuis la version 0.3.1 du script, le dépôt peut être automatiquement activé à la suite d’une question.
    Récupération du script
    Le script d’installation peut être récupéré de deux manières différentes.
    Via svn en utilisant la commande pour récupérer le code source à jour :
    svn co (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

Sur d’autres sites (3684)

  • doc : improve IMF demuxer documentation

    5 janvier 2023, par Pierre-Anthony Lemieux
    doc : improve IMF demuxer documentation

    Signed-off-by : Pierre-Anthony Lemieux <pal@palemieux.com>
    • [DH] doc/demuxers.texi

  • How to config FFmpeg for xrgb and Aver Media capture card [closed]

    12 mai 2023, par Plotter Desalor

    I'm trying to use FFmpeg through ffplay to display a capture card output as lossless as possible.

    &#xA;

    My capture card is named "Live Gamer Ultra-Video"

    &#xA;

    In OBS, the NV12, YV12, P010 and YUY2 lead to blurriness around text and fine pixels edges, but the XRGB one offer clear output. So I've tried to focus on this mode with FFmpeg as the default one lead to same blurriness seen in OBS.

    &#xA;

    Running "ffmpeg -f dshow -list_options true -i video="Live Gamer Ultra-Video" show me this result&#xA;(i've only kept line with wanted resolution)

    &#xA;

    ffmpeg version 6.0-essentials_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers&#xA;  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)&#xA;  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband&#xA;  libavutil      58.  2.100 / 58.  2.100&#xA;  libavcodec     60.  3.100 / 60.  3.100&#xA;  libavformat    60.  3.100 / 60.  3.100&#xA;  libavdevice    60.  1.100 / 60.  1.100&#xA;  libavfilter     9.  3.100 /  9.  3.100&#xA;  libswscale      7.  1.100 /  7.  1.100&#xA;  libswresample   4. 10.100 /  4. 10.100&#xA;  libpostproc    57.  1.100 / 57.  1.100&#xA;[dshow @ 00000240bf0eac40] DirectShow video device options (from video devices)&#xA;[dshow @ 00000240bf0eac40]  Pin "Capturer" (alternative pin name "0")&#xA;[dshow @ 00000240bf0eac40]   pixel_format=yuyv422  min s=2560x1440 fps=30 max s=2560x1440 fps=50&#xA;[dshow @ 00000240bf0eac40]   pixel_format=yuyv422  min s=2560x1440 fps=30 max s=2560x1440 fps=50 (tv, bt709/bt709/unknown, topleft)&#xA;[dshow @ 00000240bf0eac40]   pixel_format=yuv420p  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002&#xA;[dshow @ 00000240bf0eac40]   pixel_format=yuv420p  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002 (tv, bt709/bt709/unknown, topleft)&#xA;[dshow @ 00000240bf0eac40]   pixel_format=nv12  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002&#xA;[dshow @ 00000240bf0eac40]   pixel_format=nv12  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002 (tv, bt709/bt709/unknown, topleft)&#xA;[dshow @ 00000240bf0eac40]   unknown compression type 0xE436EB7D  min s=2560x1440 fps=30 max s=2560x1440 fps=30&#xA;[dshow @ 00000240bf0eac40]   unknown compression type 0xE436EB7D  min s=2560x1440 fps=30 max s=2560x1440 fps=30 (tv, bt709/bt709/unknown, topleft)&#xA;[dshow @ 00000240bf0eac40]   unknown compression type 0x30313050  min s=2560x1440 fps=30 max s=2560x1440 fps=30&#xA;[dshow @ 00000240bf0eac40]   unknown compression type 0x30313050  min s=2560x1440 fps=30 max s=2560x1440 fps=30 (tv, bt709/bt709/unknown, topleft)&#xA;&#xA;video=Live Gamer Ultra-Video: Immediate exit requested&#xA;

    &#xA;

    "unknown compression type 0xE436EB7D" is a pretty bad start but from https://trac.ffmpeg.org/ticket/6279 I could figured out it was just unproperly parsed RGB24 format

    &#xA;

    But if I run a very simple "ffplay -f dshow -i video="Live Gamer Ultra-Video" -pixel_format rgb24"&#xA;I got this output

    &#xA;

    ffplay version 6.0-essentials_build-www.gyan.dev Copyright (c) 2003-2023 the FFmpeg developers&#xA;  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)&#xA;  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband&#xA;  libavutil      58.  2.100 / 58.  2.100&#xA;  libavcodec     60.  3.100 / 60.  3.100&#xA;  libavformat    60.  3.100 / 60.  3.100&#xA;  libavdevice    60.  1.100 / 60.  1.100&#xA;  libavfilter     9.  3.100 /  9.  3.100&#xA;  libswscale      7.  1.100 /  7.  1.100&#xA;  libswresample   4. 10.100 /  4. 10.100&#xA;  libpostproc    57.  1.100 / 57.  1.100&#xA;[dshow @ 000001ec3fa39300] Could not set video options   0B f=0/0&#xA;video=Live Gamer Ultra-Video: I/O error&#xA;

    &#xA;

    How could I use rgb format with this capture card ?

    &#xA;

    If not possible, any other format leading to proper output would be ok too.&#xA;I've tried parameters from this topic Capture full-range/lossless rgb frame from capture card that supports NV12 and YUYV output without any good result sadly.

    &#xA;

  • Ffmpeg stream rtsp via h264 with low quality

    9 novembre 2017, par dscsdc

    When i stream rtsp with ffmpeg via upd i got lot of errors of error while decoding MB 48 31, bytestream. and i see the video with low quality.

    I stream with ffmpeg according to this command :ffmpeg -i rtsp://x.x.x.x/... http://y.y.y.y:zzzz

    On this way I send the data to ffserver and then I can watch the video via ffplay or vlc according to url :rtsp://w.w.w.w:(port)/live.h264
    (I have ffserve conf that stream to h264 file).

    When i stream via rtsp tcp all is fine, and i see the video well. but when i stream with rtsp udp i got video with very low quality, freezes or gets stuck.

    I want to understand 2 stuff :

    1. I know that udp is less reliability then tcp, but when i watch on stream from another streaming via rtsp udp i see the video with much more quality.
      is ffmpeg has a problem to stream udp or is that because i stream h264 with rtsp udp.
      What can i do to improve performance of ffmpeg with rtsp udp ?

    2. What does it matter witch type of file i stream (on rtsp udp) if this will be h264 or avi or mp4 or ffm or amp ?
      i see lot of streaming that stream amp , and another that streaming h264

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