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Autres articles (52)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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 (...)

  • 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 (5929)

  • configure : Handle armcc 5.0

    18 avril 2014, par Martin Storsjö
    configure : Handle armcc 5.0

    The first line of the "armcc —vsn" output in one version is
    
"Product : ARM Compiler 5.04".
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] configure

  • H264 keyframe issue with RTP

    3 septembre 2015, par Mat DePasquale

    I’m building an RTP encoder for H264 video. The video data provider doesn’t periodically stream the keyframe in the data, instead they have provided me with a binary file representation of the keyframe. This includes the SPS-PPS-SEI and then 8 slices of the i-frame.

    Since I am encoding RTP, I need to rebroadcast this keyframe at 2 second intervals. I am doing that in my code, along with the rest of the data as it comes in. I am using ffmpeg to connect to the RTP data via a UDP socket for display testing.

    I am noticing that every 2 seconds, the video seems to blank and resync itself, pixelate, etc. Obviously, this is highly undesirable in the video product. I’ve been trying to debug this for quite some time and the only thing I can determine is that it has to do with the keyframe. If I just send the keyframe once, and then the rest of the data, ffmpeg displays the video fine. But in a network environment, I need to send the keyframe at periodic intervals.

    Does anyone have an idea as to why this resyncing of the video happens and most importantly, how to stop it from happening ?

    Thanks !

  • FFMPEG, How to concat mp4 files with different fps to create final video with different fps

    9 octobre 2019, par Newbie Engineer

    I am using following commands

    images to video

    ffmpeg.exe -r 5 -f image2 -s 960x720 -i D :/images%2d.PNG -vcodec libx264 -crf 25 -pix_fmt yuv420p D :/tester.mp4

    I created several mp4 with different fps(5, 10, 15, 20...), and created a list of mp4 files name with different FPS, then tried to concat using

    ffmpeg -f concat -i D :/mylist.txt -c copy final.mp4

    But this is not concatenating properly, last couple of mp4 files are not being joined properly and there is always two or three seconds gap between each joined mp4 files. Wondering if any one has dealt with this issue. I want to keep the FPS of each single mp4 files as it is, trying to get smooth final video with progressing fps like 5, 10, 15, 20.. FPS).

    FFMPEG version 4.2.1, (no audio involved)

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