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  • Gestion des droits de création et d’édition des objets

    8 février 2011, par

    Par défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;

  • Dépôt de média et thèmes par FTP

    31 mai 2013, par

    L’outil MédiaSPIP traite aussi les média transférés par la voie FTP. Si vous préférez déposer par cette voie, récupérez les identifiants d’accès vers votre site MédiaSPIP et utilisez votre client FTP favori.
    Vous trouverez dès le départ les dossiers suivants dans votre espace FTP : config/ : dossier de configuration du site IMG/ : dossier des média déjà traités et en ligne sur le site local/ : répertoire cache du site web themes/ : les thèmes ou les feuilles de style personnalisées tmp/ : dossier de travail (...)

  • 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 (9281)

  • lavfi : add ICC profile support via lcms2

    9 avril 2022, par Niklas Haas
    lavfi : add ICC profile support via lcms2

    This introduces an optional dependency on lcms2 into FFmpeg. lcms2 is a
    
widely used library for ICC profile handling, which apart from being
    
used in almost all major image processing programs and video players,
    
has also been deployed in browsers. As such, it's both widely available
    
and well-tested.
    

    Add a few helpers to cover our major use cases. This commit merely
    
introduces the helpers (and configure check), even though nothing uses
    
them yet.
    

    It's worth pointing out that the reason the cmsToneCurves for each
    
AVCOL_TRC are cached inside the context, is because constructing a
    
cmsToneCurve requires evaluating the curve at 4096 (by default) grid
    
points and constructing a LUT. So, we ideally only want to do this once
    
per curve. This matters for e.g. ff_icc_profile_detect_transfer, which
    
essentially compares a profile against all of these generated LUTs.
    
Re-generating the LUTs for every iteration would be unnecessarily
    
wasteful.
    

    The same consideration does not apply to e.g. cmsCreate*Profile, which
    
is a very lightweight operation just involving struct allocation and
    
setting a few pointers.
    

    The cutoff value of 0.01 was determined by experimentation. The lowest
    
"false positive" delta I saw in practice was 0.13, and the largest
    
"false negative" delta was 0.0008. So a value of 0.01 sits comfortaby
    
almost exactly in the middle.
    

    Signed-off-by : Niklas Haas <git@haasn.dev>
    • [DH] configure
    • [DH] libavfilter/fflcms2.c
    • [DH] libavfilter/fflcms2.h

  • lavfi : add vf_iccgen for generating ICC profiles

    9 avril 2022, par Niklas Haas
    lavfi : add vf_iccgen for generating ICC profiles

    This filter is designed to specifically cover the task of generating ICC
    
profiles (and attaching them to output frames) on demand. Other tasks,
    
such as ICC profile loading/stripping, or ICC profile application, are
    
better left to separate filters (or included into e.g. vf_setparams).
    

    Signed-off-by : Niklas Haas <git@haasn.dev>
    • [DH] configure
    • [DH] doc/filters.texi
    • [DH] libavfilter/Makefile
    • [DH] libavfilter/allfilters.c
    • [DH] libavfilter/vf_iccgen.c

  • Create sliding video from pattern/tile image

    9 avril 2022, par Aldo

    Given a 300x300 tile image like this I would like to generate a 1920x1080 video just showing the repeated tile (i.e. tiles are repeated in order to cover all the 1920x1080) but also slowly moving from left to right.

    &#xA;

    Using ImageMagick I know how to generate a very long image from the tile image, let say a 19200x1080 image :

    &#xA;

    magick convert -size 19200x1080 tile:tile.jpg long.jpg&#xA;

    &#xA;

    But I have no idea on how to use ffmpeg in order to crop a 1920x1080 area from the long image and move the crop area horizontally as time passes.

    &#xA;

    Any help, also with a completely different approach not based on the long image generated by ImageMagick ?

    &#xA;

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