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  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • 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 (...)

Sur d’autres sites (5637)

  • Revision 04b100b23e : Updates vp9_pattern search to return integer sads Updates the vp9_pattern_searc

    27 août 2014, par Deb Mukherjee

    Changed Paths :
     Modify /vp9/encoder/vp9_encoder.h


     Modify /vp9/encoder/vp9_mbgraph.c


     Modify /vp9/encoder/vp9_mcomp.c


     Modify /vp9/encoder/vp9_mcomp.h


     Modify /vp9/encoder/vp9_pickmode.c


     Modify /vp9/encoder/vp9_rdopt.c


     Modify /vp9/encoder/vp9_speed_features.c


     Modify /vp9/encoder/vp9_speed_features.h


     Modify /vp9/encoder/vp9_temporal_filter.c



    Updates vp9_pattern search to return integer sads

    Updates the vp9_pattern_search function to return integer one-away
    neighbors’ sad values, for subsequent use in speeding up the
    sub-pel search. Also, removes code for the do_refine option
    which is not being used currently.
    Updates the integer and subpel functions to pass in a 5-element
    sad list for output or input.

    A new pruned sub-pel search algorithm is implemented that uses
    the sad returned from the integer pel search. But it is not
    deployed yet.

    Change-Id : Ifa9f5ad024b5b660570366d2bd900343e1891520

  • Revision 94d700e763 : Refactor rd loop for inter modes This commit pulls the iterative motion search

    28 mai 2013, par Jingning Han

    Changed Paths :
     Modify /vp9/encoder/vp9_rdopt.c



    Refactor rd loop for inter modes

    This commit pulls the iterative motion search for compound inter-
    inter out from handle_inter_mode_ as a separate function. Hence,
    it is applicable to 4x4/4x8/8x4 level compound inter search to be
    enabled later.

    Also edit the rd loop for 4x4 inter block sizes for cosmetic
    purpose.

    Change-Id : Ibc71a11cbe5a26cd52faba01026cf8446cf4d2b4

  • seeking mp4 with audiostream inaccurate in mobile safari

    23 février 2015, par dubbelj

    I have an issue with seeking an MP4 videofile on iOS (ipad). We use currentTime to skip through the video. This is working very well on most browsers, and also for h264 files without an audiostream on iOS. When I add an audiostream to the mp4 file however, the seeking becomes very inaccurate. This leads to all sorts of issues as the application bases a lot around timing.

    So we definitely concluded that a file that is encoded (using ffmpeg) with the exact same encoding settings but without audio is working well.

    These are the ffmpeg parameters I’m using when encoding with audio (added breaks for readability) :

    ffmpeg
    
-i source.mov 
    
-force_key_frames 00:00:04.840,00:00:04.880,00:00:04.920,00:00:04.960,00:00:05.000,00:00:05.040,00:00:05.080,00:00:14.760,00:00:14.800,00:00:14.840,00:00:14.880,00:00:14.920,00:00:14.960,00:00:15.000,00:00:24.760,00:00:24.800,00:00:24.840,00:00:24.880,00:00:24.920,00:00:24.960,00:00:25.000,00:00:31.720,00:00:31.760,00:00:31.800,00:00:31.840,00:00:31.880,00:00:31.920,00:00:31.960
    
-c:a libvo_aacenc
    
-b:a 128k 
    
-ar 44100 
    
-c:v libx264 
    
-preset slow 
    
-crf 21 
    
-g 25 
    
-r 25 
    
-maxrate 2000k 
    
-bufsize 2000k 
    
-pix_fmt yuv420p 
    
-movflags +faststart 
    
-tune zerolatency 
    
-vstats 
    
encoded.mp4

    Things I’ve tried :

    • all available aac and mp3 codecs
    • different audio and video bitrates
    • different audio frequencies
    • with without zerolatency faststart flags
    • maximum amount of keyframes in file
    • settings keyframes only at (and around) the area where I need to skip to

    Any ideas anyone ?

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