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  • 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 (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • MediaSPIP Player : problèmes potentiels

    22 février 2011, par

    Le lecteur ne fonctionne pas sur Internet Explorer
    Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
    Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)

Sur d’autres sites (11333)

  • Adaptive video encoding with alpha channel

    14 septembre 2020, par Peter Bartha

    I've created a WebM media file with transparent background in Adobe After Effects. Due to Widevine specs, I have to encode this file to an adaptive format for playing.

    


    With the following command I've successfully created a webm file with DASH :

    


    ffmpeg -i example.webm -c:v libvpx-vp9 -s 200x113 -b:v 250k -keyint_min 150 -g 150 -tile-columns 4 -frame-parallel 1 -an -f webm -dash 1 adaptive.webm


    


    Unfortunately, the resulting video has lost the alpha channel completely.

    


    Is it possible to encode a video to an adaptive format without losing the alpha channel ?

    


  • Streaming WebM files on unsupported browsers (Safari, IE, etc)

    14 juillet 2015, par Swaathi K

    I’d like to stream WebM videos to browsers that don’t support it (like Safari/IE). I have no problem in converting the video to a supportable format (like MP4), but the encoding should be on-demand, that is, the server should stream the MP4 content while it’s being converted from Web (WebM -> MP4). I’ve seen a few solutions like Dash and Stream-M, but all these seem to do it the other way around (MP4 -> WebM). Is there a solution that already exists for my problem ? Or do I need to build my own hack ? And also is this solution the only way to stream WebM content onto Safari/IE ?

  • webmdashenc : Support for live stream manifests

    1er avril 2015, par Vignesh Venkatasubramanian
    webmdashenc : Support for live stream manifests

    This patch adds support for creating DASH manifests for WebM Live
    
Streams. It also updates the documentation and adds a fate test to
    
verify the behavior of the new muxer flag.
    

    Signed-off-by : Vignesh Venkatasubramanian <vigneshv@google.com>
    
Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] doc/muxers.texi
    • [DH] libavformat/webmdashenc.c
    • [DH] tests/fate/vpx.mak
    • [DH] tests/ref/fate/webm-dash-manifest-live

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