Recherche avancée

Médias (33)

Mot : - Tags -/creative commons

Autres articles (109)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • 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 (12053)

  • combine video and audio .webm files based on wallclock times

    30 juillet 2021, par Zach

    I have a node server recording webrtc streams as separate video/audio files via ffmpeg.
I'm running ffmpeg via node's

    


    child_process.spawn('ffmpeg', commandArgs);


    


    Unfortunately, when I try to combine video and audio files later on, I don't know when ffmpeg created the first frame of each file, resulting in out of sync faces and voices :(

    


    Here's my command line args for piping the stream into ffmpeg

    


     '-loglevel',
  'debug',
  '-reorder_queue_size',
  '0',
  '-protocol_whitelist',
  'pipe,udp,rtp',
  '-fflags',
  '+genpts',
  '-f',
  'sdp',
  '-i',
  'pipe:0',
  '-map',
  '0:v:0',
  '-c:v',
  'copy',
  '-use_wallclock_as_timestamps',
  '1',
  '-timestamps',
  'mono2abs',
  '-flags',
  '+global_header',
  './recordings/video_1627600996166.webm'


    


    I was thinking that it might be possible to set the timestamps of packets to the linux's clock times, and tried a bunch of flags (-timestamps abs, -timestamps mono2abs, -use_wallclock_as_timestamps 1) but nothing seemed to change the result in the file. (I also have tried moving the time commands all around).

    


    packet|codec_type=video|stream_index=0|pts=0|pts_time=0.000000|dts=0|dts_time=0.000000|duration=N/A|duration_time=N/A|convergence_duration=N/A|convergence_duration_time=N/A|size=14568|pos=552|flags=K_


    


    Time always starts at 0.

    


    Any help figuring out how to get accurate times from my recorded audio/video .webm files so I can accurately combine them would be amazing.

    


    Thanks so much :)

    


  • Why my log printed many times using c api of ffmpeg decoder v2.8 which should be printed once when the callback return value is 1

    30 juillet 2019, par user10960024

    Documentation said when the callback functor interrupt_cb return 1, the blocking operation will be aborted. However, my program echo the log many times which should be printed only once log before it quit. How can I fix it ?

    AVFormatContext* formatContext = libffmpeg::avformat_alloc_context();
    
formatContext->interrupt_callback.callback = interrupt_cb;
    
formatContext->interrupt_callback.opaque = formatContext;
    

    
int interrupt_cb(void *ctx)
    
{
    
    if (...)
    
    {
    
        LOG(WARNING) << "decoder timeout!"; // it print many times
    
        return 1;
    
    }
    
    return 0;
    
}

    I expect the output would be printed only once.

  • swscale : make handle_formats() safe to be called multiple times

    14 juillet 2013, par Michael Niedermayer
    swscale : make handle_formats() safe to be called multiple times

    Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libswscale/utils.c

Navigation