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  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • 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 (...)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

Sur d’autres sites (9390)

  • 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.

  • ffmpeg add frame to video

    26 février 2012, par Emil Avramov

    guys !

    I want to ask you if somebody knows how can I attach a frame to the end of a video with ffmpeg. I have a video output.avi and I want to add frames on every 200ms using ffmpeg. I have the script to download the images, but how to add them to the video one by one.

    Thanks in advance.

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