Recherche avancée

Médias (1)

Mot : - Tags -/ticket

Autres articles (56)

  • XMP PHP

    13 mai 2011, par

    Dixit Wikipedia, XMP signifie :
    Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
    Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
    XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • MediaSPIP en mode privé (Intranet)

    17 septembre 2013, par

    À partir de la version 0.3, un canal de MediaSPIP peut devenir privé, bloqué à toute personne non identifiée grâce au plugin "Intranet/extranet".
    Le plugin Intranet/extranet, lorsqu’il est activé, permet de bloquer l’accès au canal à tout visiteur non identifié, l’empêchant d’accéder au contenu en le redirigeant systématiquement vers le formulaire d’identification.
    Ce système peut être particulièrement utile pour certaines utilisations comme : Atelier de travail avec des enfants dont le contenu ne doit pas (...)

Sur d’autres sites (7768)

  • Python-OpenCV forcing VideoWriter to use libx264 instead of libcuda.so.1

    15 mai 2018, par neilthom

    I am using OpenCV for some video processing and require the output file to be in H264 encoded in an MP4 container. This is running on Ubuntu 16.04 in a Docker container, but I have also tested in Debian 9 (Stretch) and found the same issue. When the video writer begins to write to file, the following error occurs :

    [h264_nvenc @ 0x7fd3c0468b60] Cannot load libcuda.so.1
    
Could not open codec ‘h264_nvenc’: Unspecified error

    This seems to imply that nVidia cuda and nvenc is being used to encode the output video. This requires nVidia drivers to be installed, which is not an option right now.

    The VideoWriter is created like so :

    self.out = cv2.VideoWriter("test.mp4", cv2.VideoWriter_fourcc(*'X264'), 30, (1280, 720))

    As I understand it, OpenCV uses FFmpeg for video reading and writing video. My FFmpeg install has libx264 enabled- is there a way to force OpenCV to use FFmpeg & libx264 for video writing instead of libcuda and nvenc ?

    Thanks.

  • lavfi/vf_libplacebo : simplify SAR normalization

    20 juin 2023, par Niklas Haas
    lavfi/vf_libplacebo : simplify SAR normalization

    The old logic was trying to be excessively clever in "deducing" that the
    
user wanted to stretch/scale the image when ow/oh differed from iw/ih
    
aspect ratio. But this is almost surely unintended except in
    
pathological cases, and in those cases users should simply disable
    
normalize_sar and do all the stretching/scaling logic themselves. This
    
is especially important in multi-input mode, where the canvas may be
    
vastly different from the input dimensions of any stream. Also, passing
    
through input 0 SAR in multi-input mode is arbitrary and nearly useless,
    
so again force output SAR to 1:1 here.
    • [DH] libavfilter/vf_libplacebo.c

  • FFmpeg transcoding stretches Vertically recorded videos

    28 juin 2017, par oteamm

    Hi I am having an issue with the Transcoder (FFmpeg) .

    Problem Details :
    Vertically recorded videos are appearing stretched (widened) upon transcode.

    For videos which are recorded vertically (height is more than width), the transcoded video generated does shrink vertically. If we change the aspect ratio for such files it will ruin the other video transcodes for which the transcode is generating correctly.

    Expected Behaviour :
    should not shrink/stretch vertically recorded videos

    Impact :
    we are seeing a distorted version of video, stretched horizontally

    Notes :
    Version of FFmpeg Software that you’re is used : - ffmpeg-2.8.6-win64
    (default Settings used)

    Request :
    Need to a way to correct this as if we change the aspect ratio for such files it will ruin the other video proxies for which the proxy is generating correctly.
    Please suggest, if there is any way to AUTO select the aspect ratio of original file and generate transcode accordingly. Thanks !

Navigation