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  • 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

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • 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 (...)

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  • How well does FFmpeg scale ? Any examples ?

    17 juin 2020, par Pepper

    I'm currently working on the server side of an augmented reality project. It's a lot like http://www.livingsasquatch.com/. I'm using PHP/MySQL and FFmpeg to capture the webcam video and encoding it to .flv.

    



    Basically Flash uploads the video as a long series of .jpg images. PHP then takes those images, generates a few thumbnails and passes them through FFmpeg which converts them to a single .flv file.

    



    Here is the FFmpeg code :

    



    $ffmpeg_images = $image_directory.'/image%d.jpg';

@unlink($video_directory."/$video_id.flv"); 
$ffmpeg_video = $video_directory."/$video_id.flv";
$ffmpeg_string = FFMPEG_PATH." -f image2 -i $ffmpeg_images -f flv $ffmpeg_video";

@exec($ffmpeg_string);


    



    This seems to be working nicely in my tests, but I don't know how we'll it will scale. Since this is my first time using FFmpeg, I don't know if video encoding this way will bring the server to its knees.

    



    Does anyone have experience with FFmpeg on a high traffic site ?

    



    Is there a better way of handling this type of Webcam to .flv conversion ?

    



    Are there any examples of FFmpeg being used on a high traffic site ?

    


  • How to make WMV streamable ?

    19 janvier 2013, par forthrin

    How can I make WMV stream from a HTML page on a remote server into Internet Explorer ? (Without using HTML 5 video or Flash)

    I use the following FFMPEG :

    ffmpeg -i video.mp4 -b 2000k -vcodec wmv2 -acodec wmav2 video.wmv

    And the following HTML :

    Yet the video player insists on loading the whole video before it starts to play it. How do I make it start playing when it's buffered enough ?

    Update : The important parameter seems to be the classid value :

    Please post a comment if you know about other ways to make the streaming work than including the quirky classid value.

  • mencoder generate mp4 h.264 from jpg playback stops in html videotag chrome

    10 septembre 2013, par jedimorten

    So I have some images from which I create a video with mencoder.

    mencoder -idx -nosound -noskip -of lavf -lavfopts format=mp4 -ovc x264 -x264encopts pass=1:bitrate=2000:crf=24 -o output.mp4 -mf fps=15 'mf://@files.txt'

    (where files.txt is a list of all the files sorted in the right order)

    The videos is created without problems, it plays fine in desktop-player like vlc, but in chrome (on mac) and chromium (ubuntu) some of the videoes has "breakpoints" in which the video just stops.

    Take a look at this fiddle.

    I made an ugly hack (see fiddle) to force a continued play even if the video is damaged, but this does not look very nice when the video has a lot of them "breakpoints".

    For several reasons I need to be using html, so flash would only be a last last resort.
    Any views on what may be causing these breakpoints ? Or a nicer ugly hack to force contiuned playback ?

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