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  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • 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

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

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  • FFmpeg compose, multi layers and filters, need kindly help 

    9 octobre 2019, par jadeshohy

    Pretty new to FFmpeg. We would like to use FFmpeg as a important part of an AR project.

    Currently, we find it is not easy for us.

    We want to compose the footages with FFmpeg.

    We got 5 layers, wanted to blend them with specific mode, like the things in After Effects.

    • layer-1/ [A.webm] video，vp9 codec, which has a transparent BG,has to be added as [normal mode]

    • layer-2/ [B.mp4] video, optical-flare things with black BG,has to be added as [screen mode]

    • layer-3/ [C.mp4] video, some motion graphic things with light BG,has to be added as [overlay mode]

    • layer-4/ [BG.MP4], backgound things, has to be added as [normal mode]

    After we blend those 4 (like pre-compose,use blend filter), we want to add another layer-5/[icon.png] which is the special icon.

    Layer-5 need to overlay the pre-compose. We have to overlay it at the special position (use overlay filter ?).

    Cause [icon.png] may change frequently. we want to deal with that after the 4 layer blending.

    But at the first step, when we set normal mode for layer-1 in blend filter, layer-1 [A.webm] lost the transparent BG，it gave us a black BG which block all other things.
    Blend filter can not handle the alpha channel of vp9 webm ?
    When we set the mode of layer-1 to screen mode,the translucent thing was not what we need.

    Could you please give us some commands to achieve the blend above ?

    The commands that are really work will be extremely useful for our FFmpeg initiation.

  • swscale : fix NEON hscale init

    7 mai 2020, par Josh de Kock
    swscale : fix NEON hscale init

    The NEON hscale function only supports X8 filter sizes and should only
    
be selected when these are being used. At the moment filterAlign is
    
set to 8 but in the future when extra NEON assembly for specific sizes is
    
added they will need to have checks here too.
    

    The immediate usecase for this change is making the hscale checkasm
    
test easier and without NEON specific edge-cases (x86 already has these
    
guards).
    

    Signed-off-by : Josh de Kock <josh@itanimul.li>
    • [DH] libswscale/aarch64/swscale.c

  • ffmpeg c++ seek performance

    30 juillet 2020, par thdemo

    I'm using ffmpeg for video playback, which works fine in itself, for many videos at once using HAP codec.

    &#xA;

    The problem is when trying to play at faster speeds or reverse. The HAP codec only has full frames, so that should not be the problem. But apparently doing av_seek_frame and avcodec_flush_buffers is a big bottleneck. Not when playing a few videos, but I also want to be able to do it for 25 HD videos at once. Playing at normal speeds works fine for that many videos, but at higher speeds, the framerate becomes unusable.

    &#xA;

    Is there a different way to handle playback speed and forward/backward direction anyone knows of that allows me to do this kind of playback at the same performance as normal playback ? A way to tell ffmpeg the playback speed and direction so that you don't need to seek and flush ?

    &#xA;

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