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  • MediaSPIP Core : La Configuration

    9 novembre 2010, par

    MediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
    Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...)

  • 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 (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

Sur d’autres sites (4092)

  • Whats is the problem of my old .MOV file ?

    3 septembre 2021, par PierDEVIT

    What is the meaning of the problem ? I want to test the integrity of my old .mov file :

    


    [dvvideo @ 0x7ffd8d819a00] Concealing bitstream errors
    Last message repeated 52 times


    


    The file captured it from a MiniDV in the 2008 year

    


    How can I fix this problem ? Thanks for the advice

    


  • MPEG DASH SRD : How to properly re-assemble multiple tiles into a single tile [closed]

    21 juin 2024, par ATrashInTheWorld

    I am trying to build a web player that is able to stream MPEG DASH, but with SRD information in the manifest. I have a problem at the "gluing" of the tiles part.

    


    How the data is set :

    


    I have a video of a resolution of XxY, which I've divided in tiles of NxM, meaning that I now have the NxM videos of the same duration as the original one, but which is reduced to a smaller resolution, a portion from the original (seeing only the upper left corner for example).

    


    I have fragmented those tiles for the MPEG DASH streaming format, meaning an init.mp4 and the m4s fragments for each tile. To note that I have the tiles in multiple bitrate, in order to imitate some adaptive streaming.

    


    The "gluing" part :

    


    The gluing part consists of gluing the tile togheter into 1 big tile, aka the original video. The SRD information allows me to know where each tile should be position to reconstruct the original video shape. Once I have the spatial information from the manifest, I use this command to glue the tiles togheter :

    


    ffmpeg.exe -i v1 -i v2 -i v3 -i .v4 -i v5 -i v6 -i v7 -i v8 -i v9 -filter_complex "[0:v][1:v][2:v][3:v][4:v][5:v][6:v][7:v][8:v]xstack=inputs=9:layout=0_0|w0_0|w0+w1_0|0_h0|w3_h0|w3+w4_h0|0_h0+h3|w6_h0+h3|w6+w7_h0+h3" out.mp4


    


    The command above allows me to "glue" together tiles from a grid of 3x3 tiles, into 1 big tile.

    


    The web streaming method :

    


    To stream, I use JavaScript MediaSource, and I am appending the fragments to the buffer continuously, like this reference

    


    The issue :

    


    The issue is that the FFMPEG gluing command only works on proper mp4 videos, not with fragments (m4s). I cannot glue the wanted m4s tiles back into a bigger one. However, the JavaScript player only takes fragments, meaning that I cannot just send continuous mp4 video.

    


    I have tried many things with fragments and full videos, but the only solution I found for this chicken-egg problem is to :

    


      

    1. Create video clips with smaller duration for each tile, at each bitrate.

      2. 


    2. Glue the desired video clips tiles together with the FFMpeg command.

      3. 


    3. Convert that glued video in one big fragment, and send it.

      4. 


    


    However, I feel that it is not a clean method and I fear that I am missing something.
Is there a better solution that I am not aware of ?
Any idea suggestions are welcome.

    


    Thank you for your time.

    


  • Convert video to FLV using FFMPEG

    30 septembre 2014, par Festus Tamakloe

    I come across this code in one php script that i bought last time to convert video. The script is running on Ubuntu 12.04

    -i $file_source -b 9600k -aspect 16:9 -acodec aac -strict experimental -ab 128k -ar 22050 $file_dest"

    That is the full meaning of elements/attributes and what could be the alternative ?

    Thanks for your help

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