Recherche avancée

Médias (1)

Mot : - Tags -/ogg

Autres articles (58)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

Sur d’autres sites (12620)

  • ffmpeg save 8bit 'raw' pixel data from 10bit source

    15 décembre 2023, par memeko

    So, I'm extracting I-Frames from videos with the intention of converting them to perceptual hashes to be used for analysis

    


    I am specifically working with the raw luma channel data in a Y'CBCR colour-space found in YUV420p chroma-subsampled video codecs like h.264 / h.265, which works all well and good, except when the input source uses a 10bit colour-depth.

    


    I was wondering if there is a way to make ffmpeg convert and output only the extracted Y' component as raw 8bit pixel data even if the source was originally 10bit, like, is there a raw 8bit output encoder or some kind of filter you can apply ?

    


    That is without having to re-encode the whole video, only potentially doing a conversion on the extracted luma component I-Frame data, if it happens to not already be 8bit. I am also using ffmpeg's scale filter to compress the raw Y' channel data before output, so preferably I would want the 10bit to 8bit conversion to be the last step in the pipeline.

    


    I've already tried specifying an 8bit pixel format with -pix_fmt yuv420p, this sort of works, but also causes the output to ignore -filter_complex "extractplanes=y" and also output UV planes, which is not what I want.

    


  • Revision 80501 : éviter erreur php/page blanche sur RecursiveDirectoryIterator si ...

    5 février 2014, par suske@… — Log

    éviter erreur php/page blanche sur RecursiveDirectoryIterator ? si _DIR_PLUGIN n’est pas un dir... (cas d’une mutu neuve et nue - ElJuez ?)

  • Revision 80501 : éviter erreur php/page blanche sur RecursiveDirectoryIterator si ...

    5 février 2014, par suske@… — Log

    éviter erreur php/page blanche sur RecursiveDirectoryIterator ? si _DIR_PLUGIN n’est pas un dir... (cas d’une mutu neuve et nue - ElJuez ?)

Navigation