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Autres articles (90)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • 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 (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

Sur d’autres sites (12009)

  • avformat/subtitles : Use size_t for len

    10 mai 2015, par Michael Niedermayer
    avformat/subtitles : Use size_t for len

    string length could theoretically be larger than int
    

    Reviewed-by : Clément Bœsch <u@pkh.me>
    
Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavformat/subtitles.c
    • [DH] libavformat/subtitles.h

  • ffmpeg mkv to hls with all audio and subtitles

    27 octobre 2022, par Cevat

    I have a mkv video file with multiple auido tracks and subtitles. I need implement all of video, audios and subtitles to videojs player. Hence I need convert it to HLS for full support by videojs. But I don't know how to convert mkv to hls with ffmpeg without losing audio and subtitles.

    &#xA;

  • How to write a filter for ffmpeg that burn subtitles using a subtitle stream directly

    20 mars 2014, par Filimindji

    Let say I have an MKV with a video stream, an audio stream and a subtitles stream.

    I would like to burn this subtitle into my video directly from the subtitle stream.

    so far, this is my command line :

    ffmpeg.exe -i "MyMovie.mkv" -map 0:0 -map 0:1 -vf subtitles=sub.srt out.mkv

    So far so good. But, my subtitles are inside the movie and I need to extract them before. I used this :

    ffmpeg.exe -i "MyMovie.mkv" -f srt sub.srt

    But this operation is too long : 25 sec on my PC for a 2.5Go MKV. I need something faster because I need to start streaming the output to an app as soon as possible. (I did not mentioned the others command line arguments I used to achieve this streaming properly because my question is not about that.)

    I know it is not possible to get the stream directly like this :

    ffmpeg.exe -i "MyMovie.mkv" -map 0:0 -map 0:1 -vf subtitles=[0:s:0] out.mkv

    But this is something I would love.

    edit :

    But I already know this kind of command line do not exist. (But if I'm wrong, please, let me know.)

    Now, I would like to write this kind of filter myself, and compile ffmpeg with it.
    But I have no idea where to start.

    Can anyone help me to start ?

    Thank you

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