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  • MediaSPIP : Modification des droits de création d’objets et de publication définitive

    11 novembre 2010, par

    Par défaut, MediaSPIP permet de créer 5 types d’objets.
    Toujours par défaut les droits de création et de publication définitive de ces objets sont réservés aux administrateurs, mais ils sont bien entendu configurables par les webmestres.
    Ces droits sont ainsi bloqués pour plusieurs raisons : parce que le fait d’autoriser à publier doit être la volonté du webmestre pas de l’ensemble de la plateforme et donc ne pas être un choix par défaut ; parce qu’avoir un compte peut servir à autre choses également, (...)

  • 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 (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

Sur d’autres sites (8991)

  • A random pixel on a keyframe. (ffmpeg)

    5 juin 2013, par Chris Russo

    Hello folks of SO !

    We're trying to do some very small and simple code in PHP to generate a variation of a video, using always the same file.

    The script would have to make a small pixel mark, on random or specific frame of the video file, and this would have to be streamed in real time.

    Here's some pseudo code to explain my idea :

    $frame = $_GET[frame];
    
$videofile = 'video.avi';
    

    
make_random_red_pixel_mark($videofile, $frame);

    Does anyone know if this is possible using ffmpeg ? As well, it is of extreamly importance for us, to execute this procedure as fast as possible.

    A solution that would imply reprocessing the whole video, won't be useful for our purposes. It should be something like a closed caption, or a quick image / overlay filter that could be applied without an entire video reprocessing. As well, we can't put the overlay using Javascript nor any HTML approach, since the actual manipulation has to be on the video file itself.

    The quality, and framerate of the original video, should be kept intact. Perhaps some other PHP module or software that could be execute from PHP using an exec() ?

    Any recommendation ?

    Thanks in advance !!
    Chris C. Russo

    More information :

    1) It's possible for us to apply this procedure on any frame we want to, so we could use a "keyframe" in order to avoid the decoding and reencoding of an entire GOP.

    2) As previously stated, the video stream would have to flow in real time.

  • A random pixel on a frame. (ffmpeg)

    4 juin 2013, par Chris Russo

    Hello folks of SO !

    We're trying to do some very small and simple code in PHP to generate a variation of a video, using always the same file.

    The script would have to make a small pixel mark, on random or specific frame of the video file, and this would have to be streamed in real time.

    Here's some pseudo code to explain my idea :

    $frame = $_GET[frame];
    
$videofile = 'video.avi';
    

    
make_random_red_pixel_mark($videofile, $frame);

    Does anyone know if this is possible using ffmpeg ? As well, it is of extreamly importance for us, to execute this procedure as fast as possible.

    A solution that would imply reprocessing the whole video, won't be useful for our purposes. It should be something like a closed caption, or a quick image / overlay filter that could be applied without an entire video reprocessing. As well, we can't put the overlay using Javascript nor any HTML approach, since the actual manipulation has to be on the video file itself.

    The quality, and framerate of the original video, should be kept intact. Perhaps some other PHP module or software that could be execute from PHP using an exec() ?

    Any recommendation ?

    Thanks in advance !!
    Chris C. Russo

  • lavfi/mp/mcdeint : avoid uninited data read

    31 mai 2013, par Stefano Sabatini
    lavfi/mp/mcdeint : avoid uninited data read

    Do not read padding or out-of-buffer values when computing the output
    
value for a pixel close to the image buffer edge.
    

    This avoids non visible artifacts which affected the output checksum.
    

    See thread :
    
Subject : [FFmpeg-devel] [PATCH] lavfi/mp/mcdeint : avoid uninited data read
    
Date : Thu, 30 May 2013 18:57:14 +0200
    • [DH] libavfilter/libmpcodecs/vf_mcdeint.c

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