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  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Création définitive du canal

    12 mars 2010, par

    Lorsque votre demande est validée, vous pouvez alors procéder à la création proprement dite du canal. Chaque canal est un site à part entière placé sous votre responsabilité. Les administrateurs de la plateforme n’y ont aucun accès.
    A la validation, vous recevez un email vous invitant donc à créer votre canal.
    Pour ce faire il vous suffit de vous rendre à son adresse, dans notre exemple "http://votre_sous_domaine.mediaspip.net".
    A ce moment là un mot de passe vous est demandé, il vous suffit d’y (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

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  • RAR Is Still A Contender

    31 mai 2012, par Multimedia Mike — Science Projects, bzip2, compression, gzip, lossless, rar, xz

    RAR (Roshal ARchive) is still a popular format in some corners of the internet. In fact, I procured a set of nearly 1500 RAR files that I want to use in a little project. But I didn’t want my program to have to operate directly on the RAR files which meant that I would need to recompress them to another format. Surely, one of the usual lossless compressors commonplace with Linux these days would perform better. Probably not gzip. Maybe not bzip2 either. Perhaps xz, though ?

    Conclusion
    At first, I concluded that xz beat RAR on every single file in the corpus. But then I studied the comparison again and realized it wasn’t quite apples to apples. So I designed a new experiment.

    New conclusion : RAR still beats xz on every sample in this corpus (for the record, the data could be described as executable program data mixed with reduced quality PCM audio samples).

    Methodology
    My experiment involved first reprocessing the archive files into a new resource archive file format and only compressing that file (rather than a set of files) using gzip, bzip2, xz, and rar at the maximum compression settings.

    echo filesize,gzip,bzip2,xz,rar,filename > compressed-sizes.csv
for f in `ls /path/to/files/*`
do
  gzip -9 —stdout $f > out.gz
  bzip2 -9 —stdout $f > out.bz2
  xz -9 —stdout —check=crc32 $f > out.xz
  rar a -m5 out.rar $f
  stat —printf "%s," $f out.gz out.bz2 out.rar out.xz >> compressed-sizes.csv
  echo $f >> compressed-sizes.csv
  rm -f out.gz out.bz2 out.xz out.rar
done

    Note that xz gets the option '--check=crc32' since I’m using the XZ Embedded library which requires it. It really doesn’t make a huge different in filesize.

    Experimental Results
    The preceding command line generates compressed-sizes.csv which goes into a Google Spreadsheet (export as CSV).

    Here are the full results of the bake-off, graphed :



    That’s not especially useful. Here are the top 2 contenders compared directly :



    Action
    Obviously, I’m unmoved by the data. There is no way I’m leaving these files in their RAR form for this project, marginal space and bandwidth savings be darned. There are other trade-offs in play here. I know there is free source code available for decompressing RAR files but the license wouldn’t mesh well with GPL source code libraries that form the core of the same project. Plus, the XZ Embedded code is already integrated and painstakingly debugged.

    During this little exercise, I learned of a little site called Maximum Compression which takes experiments like the foregoing to their logical conclusion by comparing over 200 compression programs on a standard data corpus. According to the site’s summary page, there’s a library called PAQ8PX which posts the best overall scores.

  • avformat : add demuxer for Pro Pinball Series' Soundbanks

    4 mai 2020, par Zane van Iperen
    avformat : add demuxer for Pro Pinball Series' Soundbanks

    Adds support for the soundbank files used by the Pro Pinball series of games.
    

    https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2020-May/262094.html
    

    Signed-off-by : Zane van Iperen <zane@zanevaniperen.com>
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] Changelog
    • [DH] libavformat/Makefile
    • [DH] libavformat/allformats.c
    • [DH] libavformat/pp_bnk.c
    • [DH] libavformat/version.h

  • avformat/westwoodaudenc : Adds muxer for Westwood AUD format.

    25 avril 2021, par Aidan Richmond
    avformat/westwoodaudenc : Adds muxer for Westwood AUD format.

    Format is still used by modders of these old games.
    

    Reviewed-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
    
Signed-off-by : Aidan Richmond <aidan.is@hotmail.co.uk>
    
Signed-off-by : Zane van Iperen <zane@zanevaniperen.com>
    • [DH] Changelog
    • [DH] libavformat/Makefile
    • [DH] libavformat/allformats.c
    • [DH] libavformat/version.h
    • [DH] libavformat/westwood_audenc.c

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