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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • 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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  • MPEG-4 and alpha transparency - the ongoing saga

    6 décembre 2022, par OrangeDog

    I'd like to reach some sort of definitive answer for the following questions :

    



      

    1. Is alpha transparency supported in MPEG-4-based codecs ?

      2. 


    2. Is there any way to be reasonably certain that there is no alpha-channel from the output of ffprobe ?

      3. 


    



    Some links I've found on the subject :

    



    



    


    Also, transparent alpha layers, an optional part of the H.264 specification, are now supported in H.264-based QuickTime movies.

    


    



    



    


    The support for alpha channel in the H.264 decoder is now available in Intel® Integrated Performance Primitives 6.0 version.

    


    



    



    


    The MPEG4 Simple Studio Profile supports auxiliary channels, which could be used for alpha or depth — and presumably even displacement, motion vectors, normals, etc.

    


    



    However, I've never seen a concrete example, or indeed any details on how you use these announced features.

    


  • avformat/avio : Don't use incompatible function pointer type for call

    6 septembre 2023, par Andreas Rheinhardt
    avformat/avio : Don't use incompatible function pointer type for call

    It is undefined behaviour even in cases where it works
    
(it works because it is only a const uint8_t* vs. uint8_t* difference).
    

    Instead add a cbuf parameter to pass a const buffer (for writing)
    
as well as a parameter indicating whether we are reading or writing ;
    
retry_transfer_wrapper() itself then uses the correct function
    
based upon this information.
    

    Reviewed-by : Marton Balint <cus@passwd.hu>
    
Reviewed-by : Tomas Härdin <git@haerdin.se>
    
Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
    • [DH] libavformat/avio.c

  • avformat/aviobuf : Don't use incompatible function pointer type for call

    6 septembre 2023, par Andreas Rheinhardt
    avformat/aviobuf : Don't use incompatible function pointer type for call

    It is undefined behaviour even in cases where it works
    
(it works because both are pointers). Instead change
    
the functions involved to use the type expected by the AVIO-API
    
and add inline wrappers for our internal callers.
    

    Reviewed-by : Tomas Härdin <git@haerdin.se>
    
Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
    • [DH] libavformat/avio.c
    • [DH] libavformat/aviobuf.c
    • [DH] libavformat/url.h

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