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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Problèmes fréquents

    10 mars 2010, par

    PHP et safe_mode activé
    Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
    La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site

  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
    Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.

Sur d’autres sites (10954)

  • Generate mosaic thumbnail using ffmpeg

    23 décembre 2023, par AlexO Poivre

    I'm working on a feature for a project that aims to replicate the interactive video timeline preview functionality similar to what you see on YouTube. The idea is to display a preview thumbnail as the user hovers over different parts of the video timeline.

    


    e.g : thumbnail on hovering

    


    To achieve this, I'm using FFmpeg to extract keyframes from a video and compile them into a mosaic. While I've successfully created a basic mosaic of these keyframes, I'm encountering challenges in optimizing the layout to minimize empty space and ensure all keyframes are included. My current FFmpeg command is as follows :

    


    ffmpeg -skip_frame nokey -i input2.mp4 -vf "scale=112:63, tile=NxM" mosaic.jpg

    


    My question are :

    


      

    • how can I determine the size of the tile (N & M) to make sure that all the thumbnails filled the entire mosaic without any empty spaces ?

      • 


    • Is there a most efficient way to achieve what I want ?

      • 


    


  • x264 rate control

    31 août 2012, par Craig

    We are using the x264 encoder in a video conferencing project, we have the basic streaming video working, however, we are having trouble understanding how the various rate control settings determine the final bitrate.
    We set the following params :

    x264_param_t params;
    
x264_param_default_preset(&params, "ultrafast", "zerolatency");
    
params.i_threads = 1;
    
params.i_width = width;
    
params.i_height = height;
    
params.i_fps_num = fps;
    
params.i_keyint_max = fps;
    
params.b_intra_refresh = 1;
    
params.b_repeat_headers = 1;
    
params.b_annexb = 1;
    

    
//Set rate control stuff here
    

    
x264_param_apply_profile(&params, "baseline");

    If we only set the params.rc.i_bitrate param, the encoder seems to massively overshoot the bitrate. If we set the i_vbv_max_bitrate & i_vbv_buffer_size params we see a bitrate which peaks (and sometimes overshoots) the i_vbv_max_bitrate setting. Obviously having tight control over the biterate is important for video conferencing, but the documentation is kind of opaque. Is anybody else using x264 for video conferencing ? How are you setting the encoder ? Any help appreciated, thanks in advance.

  • Effectively re-wrote page-player (Muxtape-style) demo, now traverses live DOM for next item(s), (should be more AJAX-friendly), event delegation now handles any links added at any time. Externalised experimental features, too

    26 novembre 2010, par Scott Schiller

    m demo/page-player/basic.html m demo/page-player/index.html + demo/page-player/script/optional-page-player-metadata.js m demo/page-player/script/page-player.js Effectively re-wrote page-player (Muxtape-style) demo, now traverses live DOM for next item(s), (should be more AJAX-friendly), event (...)

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