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Médias (91)

Autres articles (107)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

  • Monitoring de fermes de MediaSPIP (et de SPIP tant qu’à faire)

    31 mai 2013, par

    Lorsque l’on gère plusieurs (voir plusieurs dizaines) de MediaSPIP sur la même installation, il peut être très pratique d’obtenir d’un coup d’oeil certaines informations.
    Cet article a pour but de documenter les scripts de monitoring Munin développés avec l’aide d’Infini.
    Ces scripts sont installés automatiquement par le script d’installation automatique si une installation de munin est détectée.
    Description des scripts
    Trois scripts Munin ont été développés :
    1. mediaspip_medias
    Un script de (...)

Sur d’autres sites (5158)

  • FFmpeg seeking in Mpeg4 streams

    4 juillet 2012, par Chris Robinson

    I am currently attempting to develop a player that can perform accurate seeking based on an mpeg4 elementary video stream. I'm in the planning stage and trying to decide how to go about things and I'd like some advice before I start.
    Some things to note are :

    • I will have complete control over the encoding of the file.
    • The original content will be I-frame only
    • FFmpeg is the encoding/decoding library
    • Audio can be disregarded for now. I will only be dealing with the video stream.
    • Frame accurate seeking must be implemented

    So, when I'm encoding the content, can I query what type of frame (I, P, B) has been encoded so I can construct an additional index stream for the seeking operation. If not, I can query the GOP after it has been encoded to find the I-frame.

    As for playback, the user needs to be able to type in a specific time and go to that frame (the nearest I-frame will be suitable for now). We can assume that the GOP is closed and the length is fairly short (e.g. 15 frames). My thoughts are to query the index stream that I created during encode and determine the relevant distance into the stream for the requested time.

    I'm not sure how to seek using the FFMpeg library when playing back files.

    Has anyone done anything similar and if so, can you give a brief explanation of how you did it ?

  • Evolution #2514 : Doc joint EPUB reconnu en tant que ZIP au lieu de l’être comme EPUB

    31 janvier 2012, par Joachim SENE

    Voici un lien vers la page Gutenberg.org de Flatland, par E. Abbot, qui propose deux epubs différents. Domaine public. Gutenberg propose tous ses titres au format epub. Ci-joint L’éducation sentimentale de G. Flaubert, domaine public. (...)

  • Determine hardware acceleration support for a machine running libffmpeg via C++

    11 septembre 2023, par Space Bear

    I'm currently trying to find out how to query a Linux system to get find out if it support Hardware accelerated decoding of a specific video codec. (this is a multi codec application and this is part of choosing the best/fastest codec depending on the situation.)

    


    My first inclination is to leverage FFMpeg as we already use it, specifically ff_find_hwaccel. However this is an internal function.

    


    Second idea would be self implementation using av_hwaccel_next but this is deprecated.

    


    Is there an upto date method to query ffmpeg to determine if a codec has hardware acceleration support on the machine it's running on ?

    


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