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  • L’espace de configuration de MediaSPIP

    29 novembre 2010, par

    L’espace de configuration de MediaSPIP est réservé aux administrateurs. Un lien de menu "administrer" est généralement affiché en haut de la page [1].
    Il permet de configurer finement votre site.
    La navigation de cet espace de configuration est divisé en trois parties : la configuration générale du site qui permet notamment de modifier : les informations principales concernant le site (...)

  • 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) (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (5736)

  • understand what is the GOP size (i-frame/p-frame ratio) in a video

    29 avril 2012, par nkint

    i am doing stuffs with a video in action script and i need to seek a video to acertain frame. according to the reference, using NetStream.seek i can seek only to the nearest k-frame :

    Seeks the keyframe (also called an I-frame in the video industry) closest to the specified location. The keyframe is placed at an offset, in seconds, from the beginning of the stream.
    

    
Video streams are usually encoded with two types of frames, keyframes (or I-frames) and P-frames. A keyframe contains an entire image, while a P-frame is an interim frame that provides additional video information between keyframes. A video stream typically has a keyframe every 10-50 frames.

    and so i need to understand how many p-frame and i-frame there are in a video encoded in .f4v format.

    i am on mac and on ubuntu, i don't care about the tool to use (mayebe some ffmpeg/mencoder call should be perfect), any advice ?

  • avformat/mxfdec : use int math for sample count calculation

    26 mai 2018, par Marton Balint
    avformat/mxfdec : use int math for sample count calculation

    This also changes the rounding to nearest.
    

    Signed-off-by : Marton Balint <cus@passwd.hu>
    • [DH] libavformat/mxfdec.c

  • Warp video and audio non-linearly with ffmpeg

    25 novembre 2016, par Simon Streicher

    I have a non-linear mapping of the time-locations of an input video to be warped to the time-locations of an output video. Here is an example :

    enter image description here

    I therefore want to take the input video and this mapping and accelerate-and-decelerate appropriately to produce the output video (audio included). Is there any functionality in ffmpeg to accomplish this ? Any frame interpolation may be nearest neighbour or something silly (it doesn’t need to look good), but I would prefer something sophisticated for the audio.

    I have Python along with the whole numpy-scipy stack to my disposal to convert this mapping to something more parseable by ffmpeg.

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