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Autres articles (42)

  • 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 (...)

  • 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 (...)

Sur d’autres sites (7695)

  • SECURITY FIX : Only allow image file types by default.

    13 octobre 2018, par blueimp
    SECURITY FIX : Only allow image file types by default.

    This prevents remote code execution in Apache servers version 2.3.9+ with the default configuration (AllowOverride None).
    

    Since Apache version 2.3.9, .htaccess support is disabled by default :
    
https://httpd.apache.org/docs/current/mod/core.html#allowoverride
    

    Without the configuration in the .htaccess file, allowing uploads of all file types allows remote code execution.
    

    Thanks to @lcashdol for reporting the vulnerability (Closes #3514).

  • avcodec/put_bits : Add functions for amount of bytes written/left

    25 mars 2021, par Andreas Rheinhardt
    avcodec/put_bits : Add functions for amount of bytes written/left

    Often a caller doesn't want the amount of bits written via a
    
PutBitContext, but the amount of bytes. This in particular happens
    
after one has flushed the PutBitContext (e.g. at the end of encoding,
    
when one wants to know the actual packet size). The current way of doing
    
this is with put_bits_count(pb)/8 (or (put_bits_count(pb) + 7)/8).
    

    Yet this has some issues : It contains implicit multiplications and
    
divisions by 8 with a cast in between ; it obscurs the intent ; and
    
it restricts the size of the buffer to (currently) INT_MAX/8 (or
    
to 1/8 of the maximum of whatever put_bits_count() returns), although
    
said restriction is not really necessary for users that don't need
    
a bitcount.
    

    Corresponding functions for the amount of bytes left have also been
    
addded.
    

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

  • vc1 : disable parts of the interlaced code due to security issues.

    11 octobre 2011, par Michael Niedermayer

    vc1 : disable parts of the interlaced code due to security issues.

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