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  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

  • 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 (6437)

  • avfilter/vf_scale : tag output color space

    31 octobre 2023, par Niklas Haas
    avfilter/vf_scale : tag output color space

    When using vf_scale to force a specific output color space, also tag
    
this on the AVFrame. (Mirroring existing logic for output range)
    

    Move the sanity fix for RGB after the new assignment, to avoid leaking
    
bogus YUV colorspace metadata for RGB spaces.
    • [DH] libavfilter/vf_scale.c

  • ffmpeg color space metadata not working for some sources

    28 août 2023, par pawel

    I have a bit of a pickle. I'm trying to change incorrect tags on mp4 videos using ffmpeg.

    


    I'm using this command (in a bat file) :

    


    ffmpeg.exe -i %1 -colorspace "rgb" -color_primaries "bt709" -c copy -y %1.sRGB.mp4

    


    I'm on windows and I'm using ffmpeg 6.0

    


    The above command sets the tags for some videos correctly for for others does nothing. The file sizes change but ffprobe still shows me the old tags. It doesn't matter what color spaces I request or if I use numbers or strings.

    


    The only difference I can see in the source videos (ffprobe) is the SAR and DAR section.

    


    Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709/bt709/iec61966-2-1, progressive), 3840x2160, 91942 kb/s, SAR 1:1 DAR 16:9, 29.97 fps, 29.97 tbr, 30k tbn (default)

    


    Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709/bt709/iec61966-2-1, progressive), 3840x2160 [SAR 1:1 DAR 16:9], 119433 kb/s, 29.97 fps, 29.97 tbr, 30k tbn (default)

    


    the values are still the same but the grouping is different. the second one is the one that is not working through ffmpeg.

    


    do I need to provide more information on the commandline ? direct it to a stream I want to alter ? I'm a bit out of my depth here and google is not helping much on this.

    


    EDIT : updated to latest ffmpeg and I get warnings telling me that my commands were ignored :

    


    Codec AVOption colorspace (color space) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.

    


    however I get the same warnings on the mp4s that worked fine before and it is no longer working in the latest ffmpeg.

    


    my goal is to get from :

    


    Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, gbr/bt709/bt709, progressive)

    


    to :

    


    Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive)

    


    basically I want to remove bt709 tag from it

    


  • avcodec/libjxldec : use internal AVFrame as buffered space

    10 juillet 2023, par Leo Izen
    avcodec/libjxldec : use internal AVFrame as buffered space

    Before this commit, the decoder erroneously assumes that the AVFrame
    
passed to the receive_frame is the same one each time. Now it keeps an
    
internal AVFrame to write into, and copies it over when it's done.
    

    Signed-off-by : Leo Izen <leo.izen@gmail.com>
    • [DH] libavcodec/libjxldec.c

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