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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 (...)

  • 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 (...)

  • Installation en mode standalone

    4 février 2011, par

    L’installation de la distribution MediaSPIP se fait en plusieurs étapes : la récupération des fichiers nécessaires. À ce moment là deux méthodes sont possibles : en installant l’archive ZIP contenant l’ensemble de la distribution ; via SVN en récupérant les sources de chaque modules séparément ; la préconfiguration ; l’installation définitive ;
    [mediaspip_zip]Installation de l’archive ZIP de MediaSPIP
    Ce mode d’installation est la méthode la plus simple afin d’installer l’ensemble de la distribution (...)

Sur d’autres sites (8213)

  • FFmpeg : Read RTCP lost packets info

    8 juin 2018, par Vitor Vanacor

    It seems to be something trivial, but I couldn’t find a way to get the information of the packets lost, usually sent by RTCP in RTP streams.

    I’ve seen this question about reading RTCP packets, but I have two issues with it :

    1. It uses RTSP structures. In my case, the RTP stream is not necessarily RTSP, so I imagine it wouldn’t work.
    2. Even if it was (or worked without RTSP), it uses the rtsp.h header, and as far as I understand this file functions are not exposed (the only exposed headers in /libavformat when compiling FFmpeg are avio.h, libavformat.h and version.h. Maybe I’m wrong here ?)

    I also found this function in the rtpdec.h that calculates the packet loss using the RTPStatistics read from RTPDemuxContext. But I don’t understand how I would access this RTPDemuxContext (the function I found that returns this structure is in rtsp.h, so I’d be back to the previously mentioned problem).

    So, any help regarding these doubts that I have or another different way to extract the packet loss information would be appreciated !

  • ffmpeg choose exact frame from long film strip

    28 novembre 2018, par Tech Aimley

    I’m working with ffmpeg to choose the better thumbnail for my video. and the selection would be based on the slider.
    as per the requirement multiple thumbnails not needed just a single long film image and with the help of slider select the thumbnail and save it.

    i used below command to get the long strip thumbnail.

    ffmpeg -loglevel panic -y -i "video.mp4" -frames 1 -q:v 1 -vf "select=not(mod(n\,40)),scale=-1:120,tile=100x1" video_preview.jpg

    I followed the instructions from this tutorial

    I’m able to get the long film image :
    http://i.imgur.com/BX0pV4J.jpg

    This is working fine, they moving the image in slider which is fine.

    My question is how can I select a particular frame from that slider / film strip. How can I calculate the exact time duration from the slider and then execute a command to extract that frame ?

  • Add Sega FILM muxer

    2 avril 2018, par Misty De Meo
    Add Sega FILM muxer

    Signed-off-by : Josh de Kock <josh@itanimul.li>
    • [DH] Changelog
    • [DH] doc/general.texi
    • [DH] libavformat/Makefile
    • [DH] libavformat/allformats.c
    • [DH] libavformat/segafilmenc.c
    • [DH] libavformat/version.h

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