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  • 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.

  • 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 (...)

  • 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 (...)

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  • ffmpeg converting video to images while video file is being written

    20 décembre 2018, par user3398227

    Hopefully an easy question for an ffmpeg expert !

    I’m currently converting large (+6GB) mpeg video into an image sequence - which is working well using the below ffmpeg command :

    ffmpeg -i "input.mpeg" -vf - fps=fps=2 -f image2 -qscale 1 -s 1026x768
    "output%6d.jpg"

    however i have to wait for the file to finish being written to disk before i kick off ffmpeg - but this takes a good hour or so to finish writing, but what i’ve noticed is that ffmpeg can start reading the file while its being written to disk - the only snag here is it gets to the end of the file and stops before the file has finished being written...

    Question is, is there a way that ffmpeg can convert to an image sequence at the same pace the video is being written (and not exit out ?)... or know to wait for the next frame to be written from the source. (unfortunately the input doesn’t support streaming, I only get a network drive and file to work off.. ) I thought i read somewhere that ffmpeg can process at the video frame rate but cant seem to find this command for love or money in the doco !!

    Thanks !

  • Split a video file into separate video and audio files using a single ffmpeg call ?

    25 novembre 2015, par sdaau

    Background : I would like to use MLT melt to render a project, but I’d like that render to result with separate audio and video files. I’d intend to use melt’s "consumer" avformat which uses ffmpeg’s libraries, so I’m formulating this question as for ffmpeg.

    According to Useful FFmpeg Commands For Converting Audio & Video Files (labnol.org), the following is possible :

    ffmpeg -i video.mp4 -t 00:00:50 -c copy small-1.mp4 -ss 00:00:50 -codec copy small-2.mp4

    ... which slices the "merged" audio+video files into two separate "chunk" files, which are also audio+video files, in a single call ; that’s not what I need.

    Then, ffmpeg Documentation (ffmpeg.org), mentions this :

    ffmpeg -i INPUT -map_channel 0.0.0 OUTPUT_CH0 -map_channel 0.0.1 OUTPUT_CH1

    ... which splits the entire duration of the content of two channels of a stereo audio file, into two mono files ; that’s more like what I need, except I want to split an A+V file into a stereo audio file, and a video file.

    So I tried this with elephantsdream_teaser.ogv :

    ffmpeg -i /tmp/elephantsdream_teaser.ogv \
    
  -map 0.0 -vcodec copy ele.ogv -map 0.1 -acodec copy ele.ogg

    ... but this fails with "Number of stream maps must match number of output streams" (even if zero-size ele.ogv and ele.ogg are created).

    So my question is - is something like this possible with ffmpeg, and if it is, how can I do it ?

  • ffmpeg_opt : Set the video VBV parameters only for the video stream from -target

    25 mai 2015, par Michael Niedermayer
    ffmpeg_opt : Set the video VBV parameters only for the video stream from -target

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

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