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  • XMP PHP

    13 mai 2011, par

    Dixit Wikipedia, XMP signifie :
    Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
    Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
    XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

Sur d’autres sites (4632)

  • Should I use the MP3 or AAC codec for a .mp4 file ?

    8 novembre 2014, par Justin Jenkins

    We have an encoding process in place using ffmpeg on Mac OS X. This process will take a source video and a couple files from that : .m3u8 video, .mp4 video and .mp3 audio file.

    By default we’ve used the video from our m3u8 process which is a h264 (via libx264) video with AAC (via libfaac) audio.

    We are mostly using these videos on mobile devices (hence the m3u8 files) but we also use the .mp4 files for Android, Windows Phone, etc. More and more we also need to offer these same videos on the web via either a flash player or HTML5 player.

    Therefore, we’d like to have the best audio/video codec combo for all these uses ... where I’m confused is to what is "standard" for a .mp4 file ?

    If the .mp4 uses the mp3 codec then it plays just fine everywhere but QuickTime, in QuickTime the video plays but there is not audio (works just fine in VLC player tho.)

    I’ve been told it’s due to how QuickTime uses file extensions to assume information about the video instead of trying to actually get the codec data from the file ? This does make some sense, if we encode the same file but use AAC for the audio codec then it works just fine in QuickTime.

    So --- what’s the "correct" or "ideal" audio/video codec combo --- is it best and safe to use AAC (i.e. will it work on a broad range of devices) even though it’s not a "free" codec ?

  • ffmpeg keyframe extraction in Windows

    6 avril 2012, par Pen Watson

    I had downloaded ffmpeg from this site : http://www.videohelp.com/tools/ffmpeg.

    Can someone tell me how to extract keyframes from an flv, mp3 or mp4 video ?

    I tried this command that I found on the net :

    ffmpeg -i Wildlife.wmv Desktop/img_%05d.jpeg

    I got the error

    could not open file : Desktop/img_%05.

    Thank you.

  • Simulate concatenated file using hard link ?

    16 décembre 2011, par Sugrue

    I have multiple parts of a single file which I want a 3rd party c++/c# plugin to read as a single file. Basically, when the plugin file reader gets to the end of one file-part, I want it to continue to the next one.

    (For anyone interested, the plugin is Aforge.Net FFMpeg, and I am trying to import VOB files)

    It looks like quite a task to reprogram the plugin. An alternative solution is to copy the file parts to a concatenated file, but this is slow because I am dealing with many GBs of data.

    Is it possible to use a file system hard link to point to multiple files ? Or is there some other way to 'fake' a concatenated file ? Using command line FFMpeg I can use 'type' to live stream a concatenate file in, but I can't figure out how to achieve this in c# with this plugin.

    I am on Windows 7.

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