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  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

  • Soumettre bugs et patchs

    10 avril 2011

    Un logiciel n’est malheureusement jamais parfait...
    Si vous pensez avoir mis la main sur un bug, reportez le dans notre système de tickets en prenant bien soin de nous remonter certaines informations pertinentes : le type de navigateur et sa version exacte avec lequel vous avez l’anomalie ; une explication la plus précise possible du problème rencontré ; si possibles les étapes pour reproduire le problème ; un lien vers le site / la page en question ;
    Si vous pensez avoir résolu vous même le bug (...)

Sur d’autres sites (4313)

  • record desktop save every 30 minutes

    31 mars 2014, par Maged E William

    here is my question that related to the same problem :

    better way to record desktop via ffmpeg

    I have this command : ffmpeg -f dshow -i video="screen-capture-recorder" -r 30 -t 10 E:\test01.flv

    And i am happy with it, but i wonder if i can make it save every 30 minutes so if the power went off i only loses the last 30 minutes.

    I use C# to launch and hide ffmpeg cmd, so i wonder how to make it save to the same test01.flv every 30 minutes ?

  • ffmpeg scaling nvenc maintaining aspect ratio

    3 novembre 2019, par Sambir

    I want to fully hw transcode mkv files to mp4 and up- /downscale the content maintaning the aspect ratio.

    With CPU based transcoding you just add :

    scale=1920:1080:force_original_aspect_ratio=decrease

    With HW (CUDA) transcoding either -resize on Decoding side or -scale_npp on encoding side is possible but both dont seem to be capable to force original acpect ratio.

    I want to for instance upscale 1920x800 file to 1920x1080 while filling the rest with black bars so I can overlay subtitles over the bars for instance...

    With this i can fully transcoding using GPU power reather than utilizing cpu. any ideas ?

  • x86/tx_float : implement inverse MDCT AVX2 assembly

    3 septembre 2022, par Lynne
    x86/tx_float : implement inverse MDCT AVX2 assembly

    This commit implements an iMDCT in pure assembly.
    

    This is capable of processing any mod-8 transforms, rather than just
    
power of two, but since power of two is all we have assembly for
    
currently, that's what's supported.
    
It would really benefit if we could somehow use the C code to decide
    
which function to jump into, but exposing function labels from assebly
    
into C is anything but easy.
    
The post-transform loop could probably be improved.
    

    This was somewhat annoying to write, as we must support arbitrary
    
strides during runtime. There's a fast branch for stride == 4 bytes
    
and a slower one which uses vgatherdps.
    

    Zen 3 benchmarks for stride == 4 for old (av_imdct_half) vs new (av_tx) :
    

    128pt :
    
   2811 decicycles in         av_tx (imdct),16775916 runs,   1300 skips
    
   3082 decicycles in         av_imdct_half,16776751 runs,    465 skips
    

    256pt :
    
   4920 decicycles in         av_tx (imdct),16775820 runs,   1396 skips
    
   5378 decicycles in         av_imdct_half,16776411 runs,    805 skips
    

    512pt :
    
   9668 decicycles in         av_tx (imdct),16775774 runs,   1442 skips
    
  10626 decicycles in         av_imdct_half,16775647 runs,   1569 skips
    

    1024pt :
    
  19812 decicycles in         av_tx (imdct),16777144 runs,     72 skips
    
  23036 decicycles in         av_imdct_half,16777167 runs,     49 skips
    • [DH] libavutil/tx.c
    • [DH] libavutil/tx_priv.h
    • [DH] libavutil/x86/tx_float.asm
    • [DH] libavutil/x86/tx_float_init.c

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