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  • Gestion des droits de création et d’édition des objets

    8 février 2011, par

    Par défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Dépôt de média et thèmes par FTP

    31 mai 2013, par

    L’outil MédiaSPIP traite aussi les média transférés par la voie FTP. Si vous préférez déposer par cette voie, récupérez les identifiants d’accès vers votre site MédiaSPIP et utilisez votre client FTP favori.
    Vous trouverez dès le départ les dossiers suivants dans votre espace FTP : config/ : dossier de configuration du site IMG/ : dossier des média déjà traités et en ligne sur le site local/ : répertoire cache du site web themes/ : les thèmes ou les feuilles de style personnalisées tmp/ : dossier de travail (...)

Sur d’autres sites (11989)

  • ffmpeg single quote in drawtext

    9 décembre 2023, par dotsam

    I haven't been able to get ffmpeg's drawtext video filter to draw apostrophes/single quotes when they are in drawtext's "text=" parameter, even when I escape them. Double quotes work fine, and apostrophes in text loaded from a file (e.g. textfile="example.txt") work fine. Is this a bug ?

    



    e.g.

    



    ffmpeg -i test.mpg -vf drawtext="apostrophes don't print" ...
ffmpeg -i test.mpg -vf drawtext="even when they\'re escaped" ...


    


  • ffmpeg single quote in drawtext

    10 novembre 2015, par dotsam

    I haven’t been able to get ffmpeg’s drawtext video filter to draw apostrophes/single quotes when they are in drawtext’s "text=" parameter, even when I escape them. Double quotes work fine, and apostrophes in text loaded from a file (e.g. textfile="example.txt") work fine. Is this a bug ?

    e.g.

    ffmpeg -i test.mpg -vf drawtext="apostrophes don't print" ...
    
ffmpeg -i test.mpg -vf drawtext="even when they\'re escaped" ...

  • How to append fMP4 chunks to SourceBuffer ?

    24 octobre 2020, par Stefan Falk

    I have finally managed to create an fMP4 but now I am not able to seek or play the file depending on what I do in the file.

    


    On my backend I am taking the file and convert it to MP4 or fragmented MP4.

    


    The file gets send to the clients chunk-wise but this approach does not seem to work as it used to work on Chrome (bot not on Firefox) when using MP3.

    


    How I played MP3

    


    Say we have a 10 seconds track that is 1 MB in size which I want to start playing from second five. I want to load chunks of 1 second.

    


    Thus, I have offset = 5 / 10 * file_size and chunkSize = 1 / 10 * file_size`.

    


    With this I just started loading the MP3-file at an offset of 0.5 MB and loaded the chunks as needed where each chunk was 0.1 MB in size.

    


    This worked because before actually playing the file, I loaded the first bytes of the file and appended it to the SourceBuffer as well s.t. it was able to load the meta-information of the file. However, this approach is just not working for fMP4.

    


    What I tried with fMP4

    


    So, I have been converting MP3 to fMP4 with the MP3-approach ..

    


    .. using +dash (can play but not seek)

    


    ffmpeg -i input.mp3 -acodec aac -b:a 256k -f mp4 -movflags +dash output.mp4


    


    .. using frag_keyframe+empty_moov (cannot play on Chrome)

    


    ffmpeg -i input.mp3 -acodec aac -b:a 256k -f mp4 -movflags frag_keyframe+empty_moov output.mp4


    


    On the client the chunks get appended to a SourceBuffer (as explained above) after creating it with the Mime-Type audio/mp4; codecs="mp4a.40.2" :

    


    this.sourceBuffer = this.mediaSource
                        .addSourceBuffer('audio/mp4; codecs="mp4a.40.2"');


    


    and

    


    private appendSegment = (chunk) => {
  try {
    this.sourceBuffer.appendBuffer(chunk);
  } catch {
    return;
  }
}


    


    The problem is that I can only play the +dash converted file if I start reading it from the start and continue adding chunks.

    


    However, if I start reading the file from further down, the audio gets never played.

    


    playTrack(track, 0.0);  // Start at second 0 works
playTrack(track, 10.0); // Start at second 10 does not work


    


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