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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • 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 (6325)

  • FFMPEG improve MP4 encoding speed [on hold]

    17 septembre 2015, par Kim T

    My input files are MP4, which are combined with an overlay to one MP4 video file. How can I improve the speed of these FFMPEG commands ?

    ./ffmpeg -y -i intro.mp4 -f mpegts 0.ts
    
./ffmpeg -y -i record.mp4 -i overlay.png -filter_complex "[0:v][1:v] overlay=0:0" -ac 2 -f mpegts 1.ts
    
./ffmpeg -y -i outro.mp4 -f mpegts 2.ts
    
./ffmpeg -y -i "concat:0.ts|1.ts|2.ts" -vcodec libx264 -preset ultrafast -strict -2 output.mp4

    Commands that improved speed :

    • upgrading ffmpeg to version 2.42 with neon support for my device
    • -f mpegts = converts videos to transport streams which process faster
    • -preset ultrafast = tells encoder to use fastest encoding preset
    • -ss before -i = seeks straight to start point without processing frames

    Commands where I saw no speed improvement :

    • -c copy = copies the stream, but this doesn’t seem to work on overlay filters and concats :(
    • -threads 2 = tells FFMPEG to use more threads, but don’t noticed an improvement over the default

  • C# FFmpeg / NReco.VideoConverter : Increase Conversion Speed

    16 septembre 2015, par Chaki_Black

    I use NReco.VideoConverter for video conversion.
    How can I increase video conversion speed and get a maximum performance ?
    Theory says, that it is possible to increase video conversion :

    • rise processor cores quantity ;
    • rise CPU frequency (set more powerful processor(s)) ;
    • set outer video adapter to use GPU.

    There several questions :

    • can FFmpeg / NReco.VideoConverter use several cores/processor(s) at
      once and how ?
    • can FFmpeg / NReco.VideoConverter use GPU or it depends from video
      codec installed in OS ?

    What factors can influence on conversion process ?

  • Revision 4fa8e73249 : Remove speed features in vp10 Take out speed features that affect the compressi

    10 septembre 2015, par Jingning Han

    Changed Paths :
     Modify /vp10/encoder/rdopt.c


     Modify /vp10/encoder/speed_features.c


     Modify /vp10/encoder/speed_features.h



    Remove speed features in vp10

    Take out speed features that affect the compression performance
    to simplify the coding route. This commit removes the motion field
    mode search used in speed 3.

    Change-Id : Ifdf6862cb1ece8261125a56d9d89bcef60758c00

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