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  • Initialisation de MediaSPIP (préconfiguration)

    20 février 2010, par

    Lors de l’installation de MediaSPIP, celui-ci est préconfiguré pour les usages les plus fréquents.
    Cette préconfiguration est réalisée par un plugin activé par défaut et non désactivable appelé MediaSPIP Init.
    Ce plugin sert à préconfigurer de manière correcte chaque instance de MediaSPIP. Il doit donc être placé dans le dossier plugins-dist/ du site ou de la ferme pour être installé par défaut avant de pouvoir utiliser le site.
    Dans un premier temps il active ou désactive des options de SPIP qui ne le (...)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (7991)

  • ffmpeg unique frames only

    5 novembre 2013, par William

    I have a video sequence (MPEG1) of 30 fps that is decoded in two ways :

    • opencv_ffmpeg returns 30 images per second, but only 5 of them are unique, while all others are clones of the unique ones.

    • proprietary players (MediaPlayer) returns only the 5 unique frames and "holds" them for (1/5) sec each.

    Is there a way to grab only the unique frames that the coder knows and not the total amount the ffmpeg decoder produces to fulfill the fps rate ?

    I'm developing a tracker and my tracker is forced to run 6 times slower and do many mistakes due to these "cloned frames".

    Does anyone know any technical term to the problem ? Unfortunately, ffmpeg is a black box for an opencv user and the documentation is sparse.

  • ffmpeg : two videos side-by-side with audio1 lang=ger & audio2 lang=eng

    19 janvier 2023, par miridigital

    I have two videos from two GoPro cameras. Both videos are rendered via ffmpeg side-by-side into a single video (left and right) and the audio is currently combined/mixed into two channels (stereo). I can hear both camera audio channels at the same time.

    


    Two channels stereo :

    


    ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2[v]; [0:a][1:a]amerge[a]" -map "[v]" -map "[a]" -ac 2 side-by-side.mp4


    


    audio from both videos mixed into a single file with 2 channels - mediainfo

    


    Now I want to switch between the two audio channels (cam1 or cam2) while I'm playing the side-by-side video.

    


    My first try : With four channels (without -ac 2 parameter) :

    


    ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2[v]; [0:a][1:a]amerge[a]" -map "[v]" -map "[a]" side-by-side.mp4


    


    audio from both videos mixed into a single file with 4 channels - mediainfo

    


    But the most video players can't easily select the channels 1+2 or 3+4 while playing.

    


    So I tried two languages :

    


    ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2[v]; [0:a][1:a]amerge[a]" -map "[v]" -map "[a]" -metadata:s:a:0 language=ger -metadata:s:a:1 language=eng side-by-side.mp4


    


    audio from both videos mixed into a single file with 4 channels with languages - mediainfo

    


    But that's wrong. I can only see german with 4 channels. How can I put channels 1+2 into german and channels 3+4 into english ? Afterwards I should be able to use the multi language feature from most video players to switch the audio between cameras.

    


    Thank you,
    
Miriam

    


  • ftp: reconnect on read

    27 mai 2013, par Lukasz Marek
    ftp: reconnect on read

    FTP server may disconnect after some period of time when no transfer is done.
    

    FTP protocol should reconnect and seek to last position.
    • [DH] libavformat/ftp.c

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