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Autres articles (67)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • 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 (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

Sur d’autres sites (9236)

  • doc/filters/histogram : copyedit for grammar

    10 février 2014, par Werner Robitza
    doc/filters/histogram : copyedit for grammar

    There were a few grammar and spelling mistakes in this filter
    
description. I went through it and corrected them without changing
    
the meaning.
    • [DH] doc/filters.texi

  • Syncronize RTSP with computer time

    17 décembre 2012, par Dídac Pérez

    I am successfully using libav to receive the video stream from an RTSP network source. The point is that I need to syncronize my computer's time with the video capturing, meaning that I need to know which datetime of my computer corresponds to the first frame (pts = 0). My API calls are the following ones :

    av_register_all()
    
avcodec_register_all()
    
avformat_network_init()
    
avformat_open_input()
    
avformat_find_stream_info()
    
av_read_play()
    
loop
    
  av_init_packet()
    
  av_read_frame()
    
  [...]
    
  av_free_packet
    
end loop

    With the calls above, I successfully read frames, but I do need to know how can I know the exact absolute datetime that corresponds to the first frame, since it has a pts of 0. Maybe I can use a time() function or GetSystemTime (I am using Windows) between two calls of the above, but do not really know how libav works. I will appreciate your help,

    Kind regards,

    Dídac Pérez

  • FFMPEG API real-time encoding, skipped frames

    24 octobre 2015, par Paul Knopf

    I am using FFMPEG to encode live video. If I can’t keep up with the live encoding, I need to drop frames. Currently, I just skip the encoding of a raw frame, and the PTS for the next frame is the same. Meaning, even if there is a skipped frame, the pts is always 1,2,3,4,5,6....

    This causes the playback of the file to skip ahead in time. Instead, I would like to add blank frames to the muxed file. I tried making PTS indicate a skipped frame by setting it to 1,2,4,5,8,...., but the FFMPEG h264 encoders depend on PTS being consecutive.

    How do I pass empty data to my mp4/container, indicating a blank space in time, so that decoders won’t appear to jump ahead in time, but instead just see a delay/freeze.

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