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  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • 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 (3072)

  • avformat/mpegtsenc : Fix mpegts_write_pes() for private_stream_2 and other types

    25 avril 2021, par zheng qian
    avformat/mpegtsenc : Fix mpegts_write_pes() for private_stream_2 and other types

    According to the PES packet definition defined in Table 2-17 of ISO_IEC_13818-1
    
specification, some fields like PTS/DTS or pes_extension could only appears if
    
the stream_id meets the condition :
    

    if (stream_id != 0xBC &&  // program_stream_map
    
    stream_id != 0xBE &&  // padding_stream
    
    stream_id != 0xBF &&  // private_stream_2
    
    stream_id != 0xF0 &&  // ECM
    
    stream_id != 0xF1 &&  // EMM
    
    stream_id != 0xFF &&  // program_stream_directory
    
    stream_id != 0xF2 &&  // DSMCC_stream
    
    stream_id != 0xF8)    // ITU-T Rec. H.222.1 type E stream
    

    And the following stream_id types don't have fields like PTS/DTS :
    

    else if ( stream_id == program_stream_map
    
|| stream_id == private_stream_2
    
|| stream_id == ECM
    
|| stream_id == EMM
    
|| stream_id == program_stream_directory
    
|| stream_id == DSMCC_stream
    
|| stream_id == ITU-T Rec. H.222.1 type E stream ) 
    
    for (i = 0 ; i < PES_packet_length ; i++) 
    
        PES_packet_data_byte
    
    
    

    

    Current implementation skipped the check of stream_id causing some kind of
    
streams like private_stream_2 to be incorrectly written with actually a
    
private_stream_1-like PES header with PTS/DTS field. For example, Japan DTV
    
transmits news and alerts through ARIB superimpose that utilizes
    
private_stream_2 still could not be remuxed correctly for now.
    

    This patch set fixes the remuxing for private_stream_2 and
    
other stream_id types.
    

    Signed-off-by : zheng qian <xqq@xqq.im>
    
Signed-off-by : Marton Balint <cus@passwd.hu>
    • [DH] libavformat/mpegtsenc.c

  • FFMPEG encoding example does not work with VPx encoders

    11 septembre 2018, par user4177870

    I am using the following example from FFMPEG to write a raw steam of VP8 or VP9 encoder :
    https://ffmpeg.org/doxygen/trunk/encode_video_8c-example.html

    The VP8 or VP9 based file is written successfully to the disk. Then to mux this stream into a container, I sued FFMPEG command line :

    ffmpeg -i myfile.vp9 -c copy testvideo1.mkv

    I get the following error when I run the above command :

    ffmpeg version N-91789-g11cec34829 Copyright (c) 2000-2018 the FFmpeg developers

    myfile.vp9 : Invalid data found when processing input

    However, when I run the above set of operations for h264, its works fine.

    I assume its because of the endcode = 0, 0, 1, 0xb7 which might not work for VPx encoders.
    Not sure whats the issue. Any help would be appreciated.

  • ffmpeg record audio from Xvfb on Centos

    25 mai 2017, par boygiandi

    I’m trying to record audio from Xvfb. And I have some problems :

    1. What’s the different between alsa and pulse. I get confuse
    2. Server Centos have no soud card :

    arecord -l

    arecord : device_list:268 : no soundcards found...

    1. I may have many Xvfb process, how to record video and audio from specific Xvfb process. I checked this https://trac.ffmpeg.org/wiki/Capture/ALSA#Recordaudiofromanapplication but still don’t understand how it works.

    ffmpeg -f alsa -ac 2 -i hw:0,0 -acodec pcm_s16le output.wav

    I seen many command like this, but I don’t know how to get hw:0,0 ( id of sound card ? )

    Please help. Thanks

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