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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

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • 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 (9931)

  • Revert "ffmpeg : modify tty state when stderr is redirected"

    30 juillet 2015, par Michael Niedermayer
    Revert "ffmpeg : modify tty state when stderr is redirected"

    faults in fate otherwise breaks the terminal.
    
To reproduce, add a abort() into wav_read_header()
    
run make fate-acodec-adpcm-ima_wav
    

    This reverts commit 92e62f49cf7440a9e8998d284528e223c0948c97.
    • [DH] ffmpeg.c

  • Revision d36852b702 : Add encoding option —static-thresh This option exists in VP8, and it was rewri

    11 juillet 2013, par Yunqing Wang

    Changed Paths :
     Modify /vp9/encoder/vp9_encodeframe.c


     Modify /vp9/encoder/vp9_rdopt.c



    Add encoding option —static-thresh

    This option exists in VP8, and it was rewritten in VP9 to support
    skipping on different partition levels. After prediction is done,
    we can check if the residuals in the partition block will be all
    quantized to 0. If this is true, the skip flag is set, and only
    prediction data are needed in reconstruction. Based on DCT's energy
    conservation property, the skipping check can be estimated in
    spatial domain.

    The prediction error is calculated and compared to a threshold.
    The threshold is determined by the dequant values, and also
    adjusted by partition sizes. To be precise, the DC and AC parts
    for Y, U, and V planes are checked to decide skipping or not.

    Test showed that
    1. derf set :
    when static-thresh = 1, psnr loss is 0.666% ;
    when static-thresh = 500, psnr loss is 1.162% ;
    2. stdhd set :
    when static-thresh = 1, psnr loss is 1.249% ;
    when static-thresh = 500, psnr loss is 1.668% ;

    For different clips, encoding speedup range is between several
    percentage and 20+% when static-thresh <= 500. For example,
    clip bitrate static-thresh psnr time
    akiyo(cif) 500 0 48.923 5.635s(50f)
    akiyo 500 500 48.863 4.402s(50f)

    parkjoy(1080p) 4000 0 30.380 77.54s(30f)
    parkjoy 4000 500 30.384 69.59s(30f)

    sunflower(1080p) 4000 0 44.461 85.2s(30f)
    sunflower 4000 500 44.418 78.1s(30f)

    Higher static-thresh values give larger speedup with larger
    quality loss.

    Change-Id : I857031ceb466ff314ab580ac5ec5d18542203c53

  • avcodec/dca_lbr : Hardcode lpc table to save space

    12 septembre 2022, par Andreas Rheinhardt
    avcodec/dca_lbr : Hardcode lpc table to save space

    The code to initialize it takes more space (in .text) than
    
the table to be initialized (namely 86B vs 64B for GCC 11.2
    
with -O3 in an av_cold function), so hardcode the table.
    

    Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
    • [DH] libavcodec/dca_lbr.c

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