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  • 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 (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

Sur d’autres sites (10462)

  • Révision 100322 : Sur de très grosses bases (plus d’un milion de fragments), un sql_select de l’en...

    2 novembre 2016, par kent1@arscenic.info

    On les passe de 20000 en 20000, c’est plus sûr pour assurer un upgrade sans devoir relancer à coup de ctrl+r

  • Evolution #3098 : Multi-linguisme SPIP 3

    17 novembre 2013, par guytarr °

    Je ne comprends pas l’évolution demandée. 1 ticket = 1 demande. Essaye de simplifier et d’éviter (ou d’éditer après coup) les coquilles, c’est illisible en l’état.

  • Giving Thanks For VP8

    25 novembre 2010, par Multimedia Mike — VP8

    It’s the Thanksgiving holiday here in the United States. I guess that’s as good a reason as any to release a first cut of my VP8 encoder. In order to remind people that they shouldn’t expect phenomenal quality from it — and to discourage inexperienced people from trying to create useful videos with it — I have hardcoded the quantizers to their maximum settings. For those not skilled in the art, this is the setting that yields maximum compression and worst quality. When compressing the Big Buck Bunny logo image, the resulting file is only 2839 bytes but observe the reconstructed quality :



    It really just looks like a particularly stormy day in the forest.

    First VP8 File From An Independent Encoder
    I found a happy medium on the quantizer scale and encoded the first 30 seconds of Big Buck Bunny for your inspection. I guess this makes it the first VP8/WebM file from an independent encoder (using FFmpeg’s Matroska muxer as well).

    Download : bbb-360p-30sec-q40.webm ( 13 MBytes)

    I think the quality makes it look like it was digitized from an old VHS tape.

    For fun, here’s the version with the quantizer cranked to the max : bbb-360p-30sec-q127.webm ( 1.3 MBytes)

    Aside : I was going to encapsulate the video in this post using a bare HTML5 <video> tag for the benefit of the small browsing population who could view that (indeed, it works fine in Chrome). But that would be insane due to the fact that supporting browsers preload the video with no easy (read : without the help of JavaScript) method for overriding this unacceptable default.

    The Code
    I’m still trying to get over my fear of git. To that end, I have posted the code on Github :

    https://github.com/multimediamike/ffvp8enc

    I still don’t like you, git. But I’m sure we’ll find some way to make this work.

    Other required code changes in the basic FFmpeg tree :

    • Of course, copy vp8enc.c into libavcodec/
    • In libavcodec/allcodecs.c, ’REGISTER_DECODER (VP8, vp8);’ turns into ’REGISTER_ENCDEC (VP8, vp8);’
    • Add ’OBJS-$(CONFIG_VP8_ENCODER) += vp8enc.o’ to libavcodec/Makefile

    Further Work
    About the limitations and work yet to do :

    • it’s still intra-only, no interframes (which is where a lot of compression occurs)
    • no rate control or distortion optimization, obviously
    • no intra 4x4 coding (that’s close to working but didn’t my little T-day deadline)
    • no quantization control ; this should really be hooked up to the FFmpeg command line but I’m not sure how
    • encoder writes into a static-sized, 1/2 MB memory buffer ; this can overflow
    • code is a mess (what did you expect at this stage of the game ?)
    • lots and lots of other things, surely

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