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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 (...)

  • 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 (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

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  • PC Video Conferencing in the Year 1999

    21 juin 2011, par Multimedia Mike — General

    Remember Intel’s custom flavor of H.263 cleverly named I.263 ? I think I have finally found an application that used it thanks to a recent thrift shop raid— Intel Video Phone :



    The root directory of the disc has 2 copies of an intro.avi video. One copy uses Intel Indeo 3 video and PCM audio. The other uses I.263 video and an undetermined (presumably Intel-proprietary) audio codec — RIFF id 0x0402 at a bitrate of 88 kbits/sec for stereo, 22 kHz audio. The latter video looks awful but is significantly smaller (like 4 MB vs. 25 MB).

    This is the disc marked as "Send it to a friend...". Here’s the way this concept was supposed to operate :

    • You buy an Intel Video Phone Camera Pack (forgotten page courtesy of the Internet Archive) which includes a camera and 2 CDs.
    • You install the camera and video phone software on your computer.
    • You send the other CD to the person whom you want to be able to see your face when you’re teleconferencing with them.
    • The other party installs the software.
    • The 2 of you may make an internet phone call presumably using commodity PC microphones for the voice component ; the person who doesn’t have a camera is able to see the person who does have a camera.
    • In a cunning viral/network marketing strategy, Intel encourages the other party to buy the physical hardware as well so that they may broadcast their own visage back to the other person.

    If you need further explanation, the intro lady does a great job :



    I suspect I.263 was the video codec driving this since Indeo 3 would probably be inappropriate for real time video applications due to its vector quantizing algorithm.

  • How to encode non-camera video in Android

    13 mai 2013, par rwei

    I am working on an android application in which a video is dynamically generated by compositing a sequence of animation frames. I tried to use the Android Media Recorder API for this but have not found a way to get it to accept a non-camera source as input. I have been attempting to use a FFMPEG port (based on the Rockplayer build) but am running into difficulties with missing functions since I am using it as an encoder, not a decoder.

    The iPhone version of this app uses AVAssetWriter from the AVFoundation framework.

    Is there an easier way to do this or am I stuck slugging it out with FFMPEG ?

  • HTTP Stream (video) recording to a set of files

    14 septembre 2011, par mhambra

    I just thinked that a usage of VLC's livehttp module on a certain project is way too resource hungry, just for recording video stream by 30-minute files. Thereby, what OSS software can be used to record an UDP video stream part-by-part ? Excluding mencoder, since the recorded video should be gap-less.

    Also, if writing own FFmpeg code, what is the best way to tell libavformat/libavcodec to switch file output after certain # of keyframes, using already cached last/next frames ?

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