Recherche avancée

Médias (33)

Mot : - Tags -/creative commons

Autres articles (34)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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 (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (7663)

  • Using a HLS m3u8 or DASH mpd as ffmpeg input : seeking performance

    21 septembre 2020, par coder_uk

    I wonder if any FFMPEG wizards can help with this :

    


    I've seen examples (like FFmpeg code not working on http url for thumbnail extraction) of using a http URL as the input but so far only with an .mp4.

    


    If I were to instead use an ABR .m3u8/.mpd as the input (which, though a text file, does represent a video) ... is FFMPEG smart enough to work with it ? To parse it ? So ... if I gave it a 5 hour HLS VOD m3u8 as input (-i http...), and asked it for a frame at 4 hours in (-ss), would it only download that one 10s segment at the 4-hours point ? And so only need to download a small 10 second .ts file. Or does it download the whole thing ?

    


    Thanks.

    


  • Encoding video on H.263 to send over RTP

    20 novembre 2012, par Miguel Brito

    I'm developing an application to send video over RTP to a client that can play only H.263 (1996) and H263+ (1998).

    To do this i've encoded the video using libav following these steps : (this is only part of the code)

    av_register_all();
    
avformat_network_init();
    
Fmt = av_guess_format("rtp", NULL, NULL);
    
...
    
st = add_video_stream(FmtCtx, CODEC_ID_H263);
    
...
    
avio_open(&FmtCtx->pb, rtp_url, URL_WRONLY)

    To finally enter a loop where i encode the video, the problem is that the stream generated by this program is encoded in H.263-2000 (or H.263++) which the other side cannot undertand, even though i use CODEC_ID_H263 or CODEC_ID_H263P in the initialization the same thing happens.

    Is it possible to encode in those old H.263 versions using libav ? i havent managed to do it not even using ffmpeg commands. The stream is always h.263-2000 (PT=96)

  • Ffmpeg fade command and perl variable

    19 novembre 2014, par CRAIG

    I am trying to fade out some audio using ffmpeg in a Perl script.

    The command is the following :

     ffmpeg -i short.wav -af "afade=t=out:st=65:d=5" short.mp3

    With the 65 in the afade section being the time point where the fade should begin.

    However, I need to use a variable there, so instead of 65 I need to use $length and not hard code it. Any thing I try i.e. :

     ffmpeg -i short.wav -af "afade=t=out:st=" . $length . ":d=5" short.mp3

    Does not work and breaks the script.

    What would be the proper way to handle this ?

Navigation