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  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • 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 (...)

Sur d’autres sites (7919)

  • Merge commit ’ed06e5d92b4c67b49068d538461fbbe0a53a8c5e’

    9 mars 2014, par Michael Niedermayer
    Merge commit ’ed06e5d92b4c67b49068d538461fbbe0a53a8c5e’

    * commit ’ed06e5d92b4c67b49068d538461fbbe0a53a8c5e’ :
    
  hevc : Do not turn 32bit timebases into negative numbers
    

    Conflicts :
    
	libavcodec/hevc.c
    

    See : bf2ce19e51fde57727a4ee33a4b3c2622f37a5c4
    
Merged-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavcodec/hevc.c

  • Server side video mixing

    16 mars 2014, par Nicolas Goy

    I have a serie of video files encoded in mpeg2 (I can change this encoding), and I have to produce a movie in flash flv (this is a requirement, I can't change that encoding).

    One destination movie is a compilation of different source video files.

    I have a playlist defining the destination movie. For example :

    Video file        Position        Offset       Length 
    
little_gnomes     0               0            8.5
    
fairies           5.23            0.12         12.234
    
pixies            14              0            9.2

    Video file is the name of the file, position is when the file should be started (in the master timeline), offset is the offset within the video file, and length is the length of the video to play. The numbers are seconds (in double).

    This would result in something like that (final movie timeline) :

                   0--5.23|--8.5|--14|--17.464|--23.2|
    
little_nomes   **************
    
fairies               *********************
    
pixies                           *****************

    Where video overlaps, the last video to be added override the last one, the audio should be mixed.

    The resulting video track would be :

                   0--5.23|--8.5|--14|--17.464|--23.2|
    
little_nomes   *******
    
fairies               ***********
    
pixies                           *****************

    While the resulting audio would be :

                   0--5.23|--8.5|--14|--17.464|--23.2|
    
little_nomes   11111112222222
    
fairies               222222211112222222222
    
pixies                           22222222221111111

    Where 1 or 2 is the number of mixed audio tracks.

    There can be a maximum of 3 audio tracks.

    I need to write a program which takes the playlist as input and produce the flv file. I'm open to any solution (must be free/open source).

    An existing tool that can do that would be the simplest, but I found none. As for making my own solution, I found only ffmpeg, I was able to do basic things with it, but the documentation is terribly lacking.

    It can be any language, it doesn't have to be super fast (if it takes 30 minutes to build a 1h movie it's fine).

    The solution will run on opensolaris based x64 servers. If I have to use linux, this would work too. But windows is out of the question.

  • lavu/libm : add exp10 support

    22 décembre 2015, par Ganesh Ajjanagadde
    lavu/libm : add exp10 support

    exp10 is a function available in GNU libm. Looks like no other common
    
libm has it. This adds support for it to FFmpeg.
    

    There are essentially 2 ways of handling the fallback :
    
1. Using pow(10, x)
    
2. Using exp2(M_LOG2_10 * x).
    

    First one represents a Pareto improvement, with no speed or accuracy
    
regression anywhere, but speed improvement limited to GNU libm.
    

    Second one represents a slight accuracy loss (relative error 1e-13)
    
for non GNU libm. Speedup of > 2x is obtained on non GNU libm platforms,
    
 30% on GNU libm. These are "average case numbers", another benefit is
    
the lack of triggering of the well-known terrible worst case paths
    
through pow.
    

    Based on reviews, second one chosen. Comment added accordingly.
    

    Reviewed-by : Hendrik Leppkes <h.leppkes@gmail.com>
    
Reviewed-by : Michael Niedermayer <michael@niedermayer.cc>
    
Reviewed-by : Ronald S. Bultje <rsbultje@gmail.com>
    
Signed-off-by : Ganesh Ajjanagadde <gajjanagadde@gmail.com>
    • [DH] configure
    • [DH] libavutil/libm.h

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