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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 (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

Sur d’autres sites (9814)

  • ffmpeg on Heroku : TypeError : Cannot read property 'on' of undefined , ffmpegProc.stdout.on('data', function(data) { ^

    27 avril 2020, par Vikram Sapate

    I'm using ffmpeg.exe to convert video to audio .
On local machine it works fine but when deployed on heroku server it throws error like....

    



    /app/node_modules/fluent-ffmpeg/lib/processor.js:190
 ffmpegProc.stdout.on('data', function(data) {
^
TypeError: Cannot read property 'on' of undefined

    



    Please help me ....!

    


  • ffmpeg on Heroku, EC2 : TypeError : Cannot read property 'on' of undefined , ffmpegProc.stdout.on('data', function(data) { ^

    27 avril 2020, par Vikram Sapate

    I'm using ffmpeg.exe to convert video to audio .
On local machine it works fine but when deployed on heroku server it throws error like....

    



    /app/node_modules/fluent-ffmpeg/lib/processor.js:190
 ffmpegProc.stdout.on('data', function(data) {
^
TypeError: Cannot read property 'on' of undefined

    



    Please help me ....!

    


  • FFmpeg massive data loss when writing large data and swapping segments

    25 avril 2023, par Bohdan Petrenko

    I have an ffmpeg process running which continiously writes audio data to two 30 seconds (for testing, I'm actually planning to use 5 minutes) segments. The problem is that when I write some audio data with length more than size of two segments (60 seconds), 8-17 seconds of audio is lost. Here is how I run FFmpeg and write data :

    


        _ffmpeg = Process.Start(new ProcessStartInfo
    {
        FileName = "ffmpeg",
        Arguments = 
            $"-y -f s16le -ar 48000 -ac {Channels} -i pipe:0 -c:a libmp3lame -f segment -segment_time {BufferDuration} -segment_format mp3 -segment_wrap 2 -reset_timestamps 1 -segment_list \"{_segmentListPath}\" \"{segmentName}\"",
        UseShellExecute = false,
        RedirectStandardInput = true
    })!;
    // Channels is usually 1, BufferDuration is 30


    


    And here is how I write data :

    


    public async Task WriteSilenceAsync(int amount)
{
    if (amount > _size) amount = _size; // _size is 48000 * 1 * 2 * 30 * 2 = 5760000 (size of 1 minute of audio)
    
    var silence = _silenceBuffer.AsMemory(0, amount);
    await _ffmpeg.StandardInput.BaseStream.WriteAsync(silence);
}


    


    I tried to change the ffmpeg parameters and ways I write data. But I haven't found the solution.

    


    I'm sure that the problem is caused by ffmpeg segments, because if I disable segmenting and write audio to a single file, there are no problems with data loss or audio missmatch. I also sure that amount of silence to add in WriteSilenceAsync() method is calculated right. I'm not sure if the problem appears with data length more than 30 seconds but less then 1 minute, but I think it doesn't.

    


    I don't know how to solve this problem and would be glad to see any suggestions or solutions.

    


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