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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 (...)

  • 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 (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (7917)

  • The FFmpeg-generated video mute after seeking it forward [closed]

    16 septembre 2022, par PersianMan

    The video mutes after seeking it forward. It was created with FFmpeg. When I play it normally (without seeking it), the audio played. I am a Linux user and test it with VLC media player and mpv.

    


    I generated it with this :

    


    ffmpeg  -i video.flv -i audio1.flv -i audio2.flv -i audio3.flv -i audio4.flv -i audio5.flv  -i audio6.flv  -i audio7.flv  -i audio8.flv  \
-filter_complex "\
[0:v]tpad=start_duration=29.429[v];\
[1:a]adelay=3654.0[a1];\
[2:a]adelay=53563.0[a2];\
[3:a]adelay=1148851.0[a3];\
[4:a]adelay=1313774.0[a4];\
[5:a]adelay=1373197.0[a5];\
[6:a]adelay=2061735.0[a6];\
[7:a]adelay=2736617.0[a7];\
[8:a]adelay=3387278.0[a8];\
[a1][a2][a3][a4][a5][a6][a7][a8]amix=inputs=8[a]"\
 -map "[v]"  -map "[a]"  -c:v libx264 -crf 23 -c:a mp3 -s 500x500 -shortest ./output.flv


    


    [1:a] and [5:a] is a main audio (other audio have small duration). If I seek after 1373197.0 ms, the video has been muted (when [5:a] must be played).

    


  • A Digital Media Primer for Geeks

    24 septembre 2010, par noreply@blogger.com (John Luther)

    Our friend Monty Montgomery (creator of the Vorbis audio codec used in WebM) has started a video series about digital media. The first episode is an excellent overview of "the technical foundations of modern digital media."

    You can stream WebM versions of the video in your favorite WebM-enabled browser or download it to your desktop and watch it one of many WebM-enabled media players. Supported browsers and players are listed on our site.

    There’s also a companion Wiki.

  • FFMPEG Wrapping a raw video stream with OGG (or another wrapper)

    9 juillet 2014, par Cykon

    I’m building an application which takes in a rawvideo stream (piped in from an ffmpeg instance), manipulates and reads the raw video data, and pipes the output to another ffmpeg instance for encoding. Everything works great, however I’ve been trying to think of a solution which would allow audio to be sent into my program as well.

    The Ogg container seems to have a great C library, and it appears as if there has been some movement to add support for raw video https://wiki.xiph.org/OggRGB

    My plan was to pipe in a stream formatted for Ogg, use libogg to demux it, after parsing through the video data and manipulating it... use libogg again to encode and pipe out.

    Unfortunately, FFMPEG throws an "Unsupported codec id in stream 0" error when asked to output OGG with rawvideo.

    My test ffmpeg command is as follows :

    ffmpeg.exe -i fs0.mp4 -f ogg -c:v rawvideo -pix_fmt rgb24 -s 192x144 -

    Any solutions, or alternative solutions are welcome. As a side note, my program has the ability to take in multiple videos at once and outputs a combination of the inputs.

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