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Autres articles (53)

  • 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

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • 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 (10746)

  • FFmpeg Command Combinations

    1er septembre 2015, par alr027

    I’m trying to add an mp3 overlay to an mp4 video with it’s own audio track using FFmpeg. I want to keep the original audio as well as the new one. The only way I found is to strip the audio from the original video, combine it with the mp3 file, and then combine that file back with the mp4 :

    1) ffmpeg -i video.mp4 1.mp3

    2) ffmpeg -i audio.mp3 -i 1.mp3  -filter_complex amerge -c:a libmp3lame -q:a 4 audiofinal.mp3

    3) ffmpeg  -i videofinal.mp4 -i audiofinal.mp3 -shortest final.mp4

    That is a fine way of doing it and it works but I have to run my files back and forth through FFmpeg way too many times. How can I write one text file to run all three of these commands in sequence ?

    Note : I’m using Windows.

  • FFmpeg Multi-Line Commands

    31 août 2015, par alr027

    I’m not really a programmer but I started dabbling with FFmpeg to edit mp4 files and have come across a problem. I’m trying to add an mp3 overlay to an mp4 video with it’s own audio track using FFmpeg. I want to keep the original audio as well as the new one. The only way I found is to strip the audio from the original video, combine it with the mp3 file, and then combine that file back with the mp4 :

    ffmpeg -i video.mp4 1.mp3

    ffmpeg -i audio.mp3 -i 1.mp3  -filter_complex amerge -c:a libmp3lame -q:a 4 audiofinal.mp3

    ffmpeg  -i videofinal.mp4 -i audiofinal.mp3 -shortest final.mp4

    That is a fine way of doing it and it works but I have to run my files back and forth through FFmpeg way too many times. How can I write one text file to run all three of these commands in sequence ?

    Also, I’m using Windows.

  • MP4 - Prepare header for pseudostreaming requests

    3 février 2014, par davidkomer

    Assuming the client does not support byte-range requests and therefore will make requests like test.mp4 ?startoffset=2000

    How can the server prepare an mp4 header that works for all requests... is there a bare minimum that works every time or must it be the actual original header ?

    Similarly, is there a way to use ffprobe to export the original header as-is (i.e. binary format) so that it can simply be resent at the beginning of each request, by the server ?

    Thanks !

    EDIT : Did some digging around using AtomicParsley and looking at some pseudostreamed videos via archive.org. Seems that the "header" does need to be reconstructed for the new stream. Specifically, the moov atom and mdat data.

    Putting aside mdat for now, are there any helpful libraries out there that will convert from moov to moov, or at least make it easier ? No C++ please, but C is fine