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Autres articles (9)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • 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 (...)

  • Librairies et logiciels spécifiques aux médias

    10 décembre 2010, par

    Pour un fonctionnement correct et optimal, plusieurs choses sont à prendre en considération.
    Il est important, après avoir installé apache2, mysql et php5, d’installer d’autres logiciels nécessaires dont les installations sont décrites dans les liens afférants. Un ensemble de librairies multimedias (x264, libtheora, libvpx) utilisées pour l’encodage et le décodage des vidéos et sons afin de supporter le plus grand nombre de fichiers possibles. Cf. : ce tutoriel ; FFMpeg avec le maximum de décodeurs et (...)

Sur d’autres sites (3001)

  • avfilter/vf_remap : Fix double-free of AVFilterFormats on error

    7 août 2020, par Andreas Rheinhardt
    avfilter/vf_remap : Fix double-free of AVFilterFormats on error

    The query_formats function of the remap filter tries to allocate
    
two lists of formats which on success are attached to more permanent objects
    
(AVFilterLinks) for storage afterwards. If attaching a list to an
    
AVFilterLink succeeds, it is in turn owned by the AVFilterLink (or more
    
exactly, the AVFilterLink becomes one of the common owners of the list).
    
Yet if attaching a list to one of its links succeeds and an error happens
    
lateron, both lists were manually freed, which means that is wrong if the
    
list is already owned by one or more links ; these links' pointers to
    
their lists will become dangling and there will be a double-free/use-after-
    
free when these links are cleaned up automatically.
    

    This commit fixes this by removing the custom free code ; this will
    
temporarily add a leaking codepath (if attaching a list not already
    
owned by a link to a link fails, the list will leak), but this will
    
be fixed soon by making sure that an AVFilterFormats without owner will
    
be automatically freed when attaching it to an AVFilterLink fails.
    
Notice at most one list leaks because a new list is only allocated
    
after the old list has been successfully attached to a link.
    

    Reviewed-by : Nicolas George <george@nsup.org>
    
Reviewed-by : Paul B Mahol <onemda@gmail.com>
    
Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
    • [DH] libavfilter/vf_remap.c

  • avcodec/decode : always free private_ref

    11 novembre 2017, par Timo Rothenpieler
    avcodec/decode : always free private_ref

    There is no reason to keep this intact when decoding failed, specially
    
as private_ref is supposed to always be NULL when a frame is returned to
    
the user.
    • [DH] libavcodec/decode.c

  • avfilter/avf_showfreqs : Free fin

    5 septembre 2015, par Michael Niedermayer
    avfilter/avf_showfreqs : Free fin

    Fixes CID1322345
    

    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavfilter/avf_showfreqs.c

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