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    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Websites made ​​with MediaSPIP

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    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

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  • when audioqueue play lpcm decoded from ffmpeg, the elapsed time of audio queue exceeds the duraion of the media

    15 août 2012, par zhzhy

    When play the lpcm data decoded from ffmpeg with audioqueue, the elapsed time got by AudioQueueGetCurrentTime exceeds the duration of media. But when decode the same media with AVFoundation framework, the elapsed time equals duration of the media, and so when read media by ffmpeg with no decoded, then send the compressed media data to audioqueue, the elapsed time also equals duration of the media. The AudioStreamBasicDescription set as following :

        asbd.mSampleRate = 44100;
    
    asbd.mFormatID = kAudioFormatLinearPCM;
    
    asbd.mFormatFlags = kAudioFormatFlagsCanonical;
    
    asbd.mBytesPerPacket = 4;
    
    asbd.mFramesPerPacket = 1;
    
    asbd.mBytesPerFrame = 4;
    
    asbd.mChannelsPerFrame = 2;
    
    asbd.mBitsPerChannel = 16;
    
    asbd.mReserved = 0;

    When playing with data decoded from AVFoundation, the setting of AudioStreamBasicDescription is the same as above. By my test found that AudioTimeStamp.mSampleTime got by AudioQueueGetCurrentTime is different between ffmpeg and AVFoundation, the value of ffmpeg is greater than AVFoundation. So I want to know how this happen, and how to fix it ?
    Thanks !

  • ffmpeg time unit explanation and av_seek_frame method

    3 septembre 2013, par user325320

    What does time_base mean in ffmpeg ? document(here) says it is "frames per second".
    and I see in a real example that :

    AVFormatContext->streams[video_index]->time_base == 1 / 30000

    But video's AVCodecContext->time_base == 1001 / 60000

    This makes me quite confused, and I don't understand them.

    The second question is about av_seek_frame method.
    If seeking via time stamp (last parameter is AVSEEK_FLAG_BACKWARD or 0),
    the seek is started from current position read by av_seek_frame ?
    or from the start of the file ? or from the start position of decoding after last av_seek_frame call ?

  • doc/utils : rewrite doc for time duration syntax

    4 septembre 2013, par Timothy Gu
    doc/utils : rewrite doc for time duration syntax

    Extend description and clarify syntax.
    

    Signed-off-by : Timothy Gu <timothygu99@gmail.com>
    
Signed-off-by : Stefano Sabatini <stefasab@gmail.com>
    • [DH] doc/utils.texi

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