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Médias (91)

Autres articles (45)

  • 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) (...)

  • 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 (...)

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

Sur d’autres sites (6951)

  • avfilter/video : pick sar from link

    7 décembre 2017, par Paul B Mahol
    avfilter/video : pick sar from link

    It should not be needed for each filter that sets sample aspect ratio
    
to set it explicitly also for each and every frame, instead that is
    
automatically done in get_buffer call.
    

    Signed-off-by : Paul B Mahol <onemda@gmail.com>
    • [DH] libavfilter/video.c

  • Overcome MPEG 2 TS Link Buildup Latency

    18 février 2015, par user2389323

    I have built a TS audio video link. I send encoded raw audio and video from one computer to another using TS over Ethernet. I am using FFMPEG libraries for this. Everything works fine except there is a latency build up with time.

    When i play the raw video content at both encode and decoder ends, initially there is very little visible latency(less than a second). But when time increases the difference of the two videos slowly increase. I am playing the received video using a fixed frame rate.

    As i have understood it is possible to us the PCR value to overcome this latency build up problem but it is not clear to me how to use that value..

    Can someone kindly tell me how to use the PCR value of a TS stream to avoid latency build up ?

    Thank you.

  • How to link ffmpeg library by cmake ?

    20 décembre 2018, par paradisal programmer

    I want to use ffmpeg library in my c++ program.

    I’ve downloaded ffmpeg source.
    During make&compile process,
    i had this error :
    UINT64_C not defined !
    After some search :

    1.Adding the following code to libavutil/common.h

    #ifndef INT64_C
    
#define INT64_C(c) (c ## LL)
    
#define UINT64_C(c) (c ## ULL)
    
#endif

    2../configure&amp;compile
    had solved that problem.

    But now i want to link this library to a simple encoding method by using cmake files.
    I’ve tried some sample of CMakeLists.txt but i still have
    "undefined refrence " error
    many thanks !

    • I am working in ubuntu
    • using g++ as c++ compiler
    • using FFmpeg 2.0.1

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