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  • 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 (...)

  • Taille des images et des logos définissables

    9 février 2011, par

    Dans beaucoup d’endroits du site, logos et images sont redimensionnées pour correspondre aux emplacements définis par les thèmes. L’ensemble des ces tailles pouvant changer d’un thème à un autre peuvent être définies directement dans le thème et éviter ainsi à l’utilisateur de devoir les configurer manuellement après avoir changé l’apparence de son site.
    Ces tailles d’images sont également disponibles dans la configuration spécifique de MediaSPIP Core. La taille maximale du logo du site en pixels, on permet (...)

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  • How to build a daemon to encode video files on S3 ?

    4 avril 2013, par Yuval Cohen

    I am interested in running a daemon to go over user uploaded video files and encode them in an optimal format (and add some watermarks).

    I was considering services such as Zencoder, Encoding.com, Amazon's encoding service but some lack overlaying capabilities and some are just too expensive for our (big) volumes.

    I want to build a daemon that encodes videos that are located on S3 once users upload them.

    The solution I thought of would be Python Heroku servers using Celery for a task queue to keep track of the encoded files and ffmpeg to do the actual work. However, I ran into troubles compiling ffmpeg for Heroku (with libass support, so the basic ffmpeg bins aren't enough).

    What approach/technology stack would you consider for this mini-project ?

    Thanks !
    Yuval

  • New Challenges

    14 mars 2013, par silvia

    I finished up at Google last week and am now working at NICTA, an Australian ICT research institute.

    My work with Google was exciting and I learned a lot. I like to think that Google also got a lot out of me – I coded and contributed to some YouTube caption features, I worked on Chrome captions and video controls, and above all I worked on video accessibility for HTML at the W3C.

    I was one of the key authors of the W3C Media Accessibility Requirements document that we created in the Media Accessibility Task Force of the W3C HTML WG. I then went on to help make video accessibility a reality. We created WebVTT and the <track> element and applied it to captions, subtitles, chapters (navigation), video descriptions, and metadata. To satisfy the need for synchronisation of video with other media resources such as sign language video or audio descriptions, we got the MediaController object and the @mediagroup attribute.

    I must say it was a most rewarding time. I learned a lot about being productive at Google, collaborate successfully over the distance, about how the WebKit community works, and about the new way of writing W3C standard (which is more like pseudo-code). As one consequence, I am now a co-editor of the W3C HTML spec and it seems I am also about to become the editor of the WebVTT spec.

    At NICTA my new focus of work is WebRTC. There is both a bit of research and a whole bunch of application development involved. I may even get to do some WebKit development, if we identify any issues with the current implementation. I started a week ago and am already amazed by the amount of work going on in the WebRTC space and the amazing number of open source projects playing around with it. Video conferencing is a new challenge and I look forward to it.

  • Installing codecs for mov to mp4 conversion ffmpeg [closed]

    19 juillet 2014, par user1503606

    I have been trying to convert a .mov file to a .mp4 file for a while now i think this is the correct code to do it.

    ffmpeg  -i P1010989.MOV -vcodec copy -acodec copy out.mp4

    But here is my output

    FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
    
  built on Jan 29 2012 23:55:02 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
    
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab
    
  libavutil     50.15. 1 / 50.15. 1
    
  libavcodec    52.72. 2 / 52.72. 2
    
  libavformat   52.64. 2 / 52.64. 2
    
  libavdevice   52. 2. 0 / 52. 2. 0
    
  libavfilter    1.19. 0 /  1.19. 0
    
  libswscale     0.11. 0 /  0.11. 0
    
  libpostproc   51. 2. 0 / 51. 2. 0
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'P1010989.MOV':
    
  Duration: 00:00:01.00, start: 0.000000, bitrate: 11584 kb/s
    
    Stream #0.0(eng): Video: mjpeg, yuvj420p, 640x480, 11315 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
    
    Stream #0.1(eng): Audio: pcm_s16be, 16000 Hz, 1 channels, s16, 256 kb/s
    
File 'out.mp4' already exists. Overwrite ? [y/N] y
    
[mp4 @ 0x95b0080]track 1: could not find tag, codec not currently supported in container
    
Output #0, mp4, to 'out.mp4':
    
  Metadata:
    
    encoder         : Lavf52.64.2
    
    Stream #0.0(eng): Video: mjpeg, yuvj420p, 640x480, q=2-31, 11315 kb/s, 30 tbn, 30 tbc
    
    Stream #0.1(eng): Audio: pcm_s16be, 16000 Hz, 1 channels, 256 kb/s
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
  Stream #0.1 -> #0.1
    
Could not write header for output file #0 (incorrect codec parameters ?)

    So i am trying to install the correct codecs and im a bit lost and do with some help.

    Do i need to install the codecs separately and where do i download and install them from ?

    Code really do with some help thanks.

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