Recherche avancée

Médias (2)

Mot : - Tags -/documentation

Autres articles (104)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

Sur d’autres sites (6585)

  • Xcode 12 : how to link against object files built for free standing

    1er octobre 2020, par Jean-Michaël Celerier

    The issue is about linking x86_64 macOS executables statically against libavcodec, libavdevice, etc, which have some object files built against freestanding as they use YASM which isn't able to embed the macOS "tag" in the binary (see Building for macOS, but linking in object file built for free standing for detailed information on that issue).

    


    Everything works fine under Xcode 11.6 - the following messages are here, but they are warnings.
With the Xcode 12 update they become an error.
How to make them warnings again ? I could not find anything relevant in the ld man page.

    


    


    ld : in ffmpeg/lib/libavcodec.a(aacencdsp.o), building for macOS, but linking in object file built for free standing, for architecture x86_64

    


    


  • avcodec/ljpegenc : Don't free buffer known to be NULL

    15 septembre 2020, par Andreas Rheinhardt
    avcodec/ljpegenc : Don't free buffer known to be NULL

    The lossless JPEG encoder allocates one buffer in its init function
    
and freeing said buffer is the only thing done in its close function.
    
Despite this the init function called the close function if allocating
    
said buffer fails, although there is nothing to free in this case.
    
This commit stops doing this.
    

    Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
    • [DH] libavcodec/ljpegenc.c

  • avformat/dashdec, hls : Update correct pointer to AVDictionary

    7 septembre 2020, par Andreas Rheinhardt
    avformat/dashdec, hls : Update correct pointer to AVDictionary

    open_url() in the DASH as well in the hls demuxer share a common bug :
    
They modify an AVDictionary (i.e. set a new entry) given to them as
    
AVDictionary *, yet if this new entry leads to reallocation and
    
relocation of the AVDictionary, the caller's pointer will become
    
dangling, leading to use-after-frees. So pass an AVDictionary **.
    

    (With the current implementation of AVDictionary the above can only
    
happen if the AVDictionary was empty initially (in which case the
    
new AVDictionary leaks) ; furthermore if the I/O is ordinary (i.e. opened
    
by avio_open2() or ffio_open_whitelist()), the dict is never empty (it
    
contains an rw_timeout entry from save_avio_options()). So this issue
    
could only happen if the caller sets a nondefault io_open callback, but
    
no AVIOContext (the AVFMT_FLAG_CUSTOM_IO flag won't be set in this
    
case). In case of the HLS demuxer, it was also necessary that setting
    
the "seekable" entry failed. Yet one should simply not rely on internals
    
of the AVDict API.)
    

    Reviewed-by : Steven Liu <lq@chinaffmpeg.org>
    
Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
    • [DH] libavformat/dashdec.c
    • [DH] libavformat/hls.c

Navigation