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  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

Sur d’autres sites (10985)

  • Generating synthetic testsrc video counting at 10 fps, first frame is duplicated

    19 février 2020, par Rotem

    I am trying to generate synthetic video using FFmpeg.

    I want the frame rate to be 10 fps, and I want testsrc counter to advance every frame.

    Problem :
    When the output file is mp4, the first video frame is duplicated 10 times.

    Question :
    Is it a bug in FFmpeg, or a problem in the command line arguments ?

    I am using the following command :

    ffmpeg -y -r 10 -f lavfi -i testsrc=duration=10:size=192x108:rate=1 -c:v libx264 vid.mp4
    • The reason for setting rate=1 is for the counter to advance on each frame.
      The generated source pattern is designed to advance the counter every second.
    • The reason for setting -r 10 before the input, is for "remuxing" the video at 10 fps, and ignoring the timestamps of the input.

    I found the syntax in the following post : Using ffmpeg to change framerate :

    Remux with new framerate

    ffmpeg -y -r 24 -i seeing_noaudio.h264 -c copy seeing.mp4

    When the output file is AVI it’s working correctly (first frame is not duplicated) :

    ffmpeg -y -r 10 -f lavfi -i testsrc=duration=10:size=192x108:rate=1 -c:v libx264 vid.avi

    When generating AVI at 1 fps, and Remux to mp4 at 10 fps, there is a different problem :
    The first and second frames are duplicated twice, and the last frame is missing.
    Here are the commands :

    ffmpeg -y -f lavfi -i testsrc=duration=10:size=92x54:rate=1 -c:v libx264 -r 1 vid.avi
    
ffmpeg -y -r 10 -i vid.avi -c:v copy -r 10 vid.mp4

    Parsing the mp4 video to PNG images :

    ffmpeg -i vid.mp4 %02d.png  

    Result :
    enter image description here
    The first frame is duplicated 10 times.

    Parsing the AVI video to PNG images :
    Result :
    enter image description here
    There are 10 frames as expected.

  • Peer to peer video chat ? [closed]

    30 mars 2013, par aladein

    I want to program a peer to peer video chat application. can any body suggest an open source real time video codec with low latency. I prefer to work with c#.
    ffmpeg is great but I could not figure how to use (stream over
    network) it on windows.
    thank you in advance.

  • Libavformat- Passing an object of images to libavformat to generate a video

    8 septembre 2020, par Venkata Tata

    I am trying to generate a video with libavformat/Libavcodec with a bunch of images that are in memory.

    


    Can someone point me in the right direction, please ?

    


    Thanks in advance.

    


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