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  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • 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 (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

Sur d’autres sites (5196)

  • fftools/ffmpeg_filter : add a function for creating a filtergraph

    18 avril 2023, par Anton Khirnov
    fftools/ffmpeg_filter : add a function for creating a filtergraph

    Code creating a new filtergraph is currently duplicated in 3 places.
    
This commit unifies it and moves towards making filtergraphs more
    
self-contained.
    • [DH] fftools/ffmpeg.h
    • [DH] fftools/ffmpeg_filter.c
    • [DH] fftools/ffmpeg_opt.c

  • Preprocessing of Columbia active speaker dataset

    21 octobre 2019, par aspit794

    I would like to use the Columbia dataset (which is 1 video https://youtu.be/6GzxbrO0DHM) and its ground truth annotation (http://www.jaychakravarty.com/wp-content/uploads/2016/02/columbiaDatasetGroundTruth.zip).

    annotation contain the frame_id (int), x and y position of the bounding box (int, int), the width=height of the bounding box (int), and the ground truth for active speaker (0 or 1)

    More information : https://www.jaychakravarty.com/active-speaker-detection/

    I managed to download the video, extracted the frames with

    ffmpeg -loglevel 0 -i columbia.mkv columbia/frame_%06d.jpg -nostdin -vf -an -hide_banner

    and draw the ground truth bounding boxes to the video frames (where available).

    However, the bounding boxes are not in the correct places, and I am a bit helpless.

    I tried to convert the video to other frame rate (e.g. 25 fps), but the annotation is not fit.

    I read every paper available, which is related to this dataset, but neither of them mention any information about preprocessing, and the codebase is not publicly available.

    How should I preprocess the video to interpret the annotation ?

  • libavcodec/zmbvenc : Add support for RGB formats

    7 mars 2019, par Matthew Fearnley
    libavcodec/zmbvenc : Add support for RGB formats

    This consists mostly of the following changes :

    - add newly supported pixel formats (RGB555LE, RGB565LE, BGR0)

    - select the ZMBV format (c->fmt) and bytes per pixel (c->bypp) based on
    
  avctx->pix_fmt

    - multiply widths/x-values by c->bypp, in places where bytes, not pixels, are
    
  expected

    - disable palette-writing code for non-palette pix_fmts

    - make a note about histogram[]'s datatype (it could need increasing if
    
  ZMBV_BLOCK is increased)

    - adjust the c->score_tab length to take up to (and including) 4 times the
    
  number of pixels in a block

    - initialise c->score_tab up to c->bypp * the number of pixels
    

    Note : the ZmbvFormat enum allows for additional bit depths :

    - 1,2,4-bit (palette)

    - 24-bit (RGB)
    

    At time of writing the specifics of these (e.g. channel order, bit alignment)
    
are not currently defined, and DOSBox only implements support for 8/15/16/32
    
bpp.
    
One might expect the 24-bit format - if implemented - to be BGR24, to have the
    
same channel order as BGR0.
    
However, the decoder in zmbv.c has been guessed to use RGB24, so I have chosen
    
to not contradict this, and omitted specific support for this format.
    • [DH] libavcodec/zmbvenc.c

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