Recherche avancée

Médias (1)

Mot : - Tags -/stallman

Autres articles (61)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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

Sur d’autres sites (14569)

  • avformat/mxfdec : SMPTE RDD 48:2018 Amd 1:2022 support

    9 juillet 2022, par Michael Niedermayer
    avformat/mxfdec : SMPTE RDD 48:2018 Amd 1:2022 support

    Reviewed-by : Tomas Härdin <tjoppen@acc.umu.se>
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavformat/mxf.c
    • [DH] libavformat/mxf.h
    • [DH] libavformat/mxfdec.c

  • avformat/mxfenc : SMPTE RDD 48:2018 Amd 1:2022 support

    14 mars 2023, par Jerome Martinez
    avformat/mxfenc : SMPTE RDD 48:2018 Amd 1:2022 support
    • [DH] libavformat/Makefile
    • [DH] libavformat/mxfenc.c
    • [DH] libavformat/rangecoder_dec.c
    • [DH] tests/fate/lavf-container.mak
    • [DH] tests/ref/lavf/mxf_ffv1

  • Dreamcast Track Sizes

    1er mars 2015, par Multimedia Mike — Sega Dreamcast

    I’ve been playing around with Sega Dreamcast discs lately. Not playing the games on the DC discs, of course, just studying their structure. To review, the Sega Dreamcast game console used special optical discs named GD-ROMs, where the GD stands for “gigadisc”. They are capable of holding about 1 gigabyte of data.

    You know what’s weird about these discs ? Each one manages to actually store a gigabyte of data. Each disc has a CD portion and a GD portion. The CD portion occupies the first 45000 sectors and can be read in any standard CD drive. This area is divided between a brief data track and a brief (usually) audio track.

    The GD region starts at sector 45000. Sometimes, it’s just one humongous data track that consumes the entire GD region. More often, however, the data track is split between the first track and the last track in the region and there are 1 or more audio tracks in between. But the weird thing is, the GD region is always full. I made a study of it (click for a larger, interactive graph) :


    Dreamcast Track Sizes

    Some discs put special data or audio bonuses in the CD region for players to discover. But every disc manages to fill out the GD region. I checked up on a lot of those audio tracks that divide the GD data and they’re legitimate music tracks. So what’s the motivation ? Why would the data track be split in 2 pieces like that ?

    I eventually realized that I probably answered this question in this blog post from 4 years ago. The read speed from the outside of an optical disc is higher than the inside of the same disc. When I inspect the outer data tracks of some of these discs, sure enough, there seem to be timing-sensitive multimedia FMV files living on the outer stretches.

    One day, I’ll write a utility to take apart the split ISO-9660 filesystem offset from a weird sector.

Navigation