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Autres articles (111)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

Sur d’autres sites (11510)

  • Revision 9d427884e9 : Fixed libyuv image copy for high bitdepth When scaling and extending frames in

    8 mai 2014, par Peter de Rivaz

    Changed Paths :
     Modify /third_party/libyuv/source/scale.c



    Fixed libyuv image copy for high bitdepth

    When scaling and extending frames in high bitdepth,
    there is a special case when no scaling is required.
    This triggers a code path that calls CopyPlane16.
    In this case the high bitdepth code was not
    copying enough bytes.

    Change-Id : I0fe2dc667ca8d7b0d03c0290a5716d53309c8198

  • How to speed up ffmpeg's copy ?

    30 mars 2022, par Jamie Hutber

    I am currently using ffmpegs concat with -c copy. I am getting around 3.7x on average.

    


    $ ffmpeg -safe 0 -protocol_whitelist file,tcp,http,pipe -f concat -i - -c copy "test.mp4"
........
frame=24457 fps=237 q=-1.0 Lsize= 2983723kB time=00:06:48.02 bitrate=59905.3kbits/s speed=3.96x
........


    


    But the issue is, every session I have around 9x15x8min clips to merge. So if I could improve the speed of copy I would like to.

    


    I am not sure if you can use gpu as no encoding is happening. But I should be able to assign more cores to the process ?

    


    I have somewhere in this image stopped the ffmpeg process, but you would never know when it was. It was 9 seconds ago in the image.
enter image description here

    


    ffmpeg -safe 0 -protocol_whitelist file,tcp,http,pipe -f concat -i - -c copy "test.mp4"

    


    Full Command

    


    ls -1v | grep -i mp4 | perl -ne '$_ =~ s/\n$//; print "file '"'"'$_'"'"'\n"' | ffmpeg -safe 0 -protocol_whitelist file,tcp,http,pipe -f concat -i - -c copy "test.mp4"


    


    with ffmpeg process running for 60+ seconds

    


    enter image description here

    


  • swscale/swscale_unscaled : make the fast planar copy path work with more formats

    15 mars, par James Almer
    swscale/swscale_unscaled : make the fast planar copy path work with more formats

    dst_depth - src_depth where the result is 6 or 7 in a high bd path means this
    
is only executed for 16 -> 10 and 16 -> 9.
    
This patch makes this path general, supporting arbitrary formats as long as
    
dst_depth > src_depth > 8.
    

    Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] libswscale/swscale_unscaled.c

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