Recherche avancée

Médias (1)

Mot : - Tags -/stallman

Autres articles (79)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • 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 (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

Sur d’autres sites (10782)

  • Revision 040eeed9d0 : Turning model based reverse update on for coefs Turns model based reverse updat

    26 avril 2013, par Deb Mukherjee

    Changed Paths :
     Modify /vp9/common/vp9_entropy.c


     Modify /vp9/common/vp9_entropy.h



    Turning model based reverse update on for coefs

    Turns model based reverse updates on for coefficients in an
    effort to reduce the memory requirement for counters.

    With this patch the counters needed will be reduced by about
    75% since only 3 counts are needed instead of 12.

    The impact in performance is :
    derf300 : -0.252%
    stdhd250 : -0.046%

    However retraining should alleviate some of the drop in
    performance.

    Change-Id : I6f2b3e13f6d5520aa3400b0b228fb5e8b4a43caa

  • VFR input + h264_nvenc - output bitrate is based on initial frame rate when I want it to be time based [closed]

    4 août, par hedgehog90

    I have an HLS stream produced from a live VFR source in ffmpeg.
The source consists of blocks of varying frame rate. The first 30 minutes might be 24fps, the next 30 minutes @ 60fps.
Although it is not standard for HLS to be VFR, it appears to playback perfectly well on various platforms I've tested.

    


    When I use the libx264 encoder with -crf + -maxrate parameters, I can get my desired bitrate per stream despite potentially wild frame rate fluctuations.

    


    But when I use the h264_nvenc encoder with -cq + -maxrate parameters (and practically every configuration I could think of), the bitrate is all dependant on the initial frame rate of the input stream.
For example, segment duration is set to 5 seconds... the first 5 seconds of the input are 30fps, and the next 5 seconds are 60fps, the resulting output will produce 1 segment at the desired bitrate, the next at double the desired bitrate.

    


    I have tried every configuration to try and trick the encoder into working differently, but it appears this might be a built-in limitation.

    


    I've searched for answers, I've asked the chatbots, I can't find a definitive solution, besides converting the input stream to a constant frame rate (which is not an option).

    


  • Zoom and Moving based on audio information in FFMPEG

    19 décembre 2019, par Mattstir

    I recently wondered if it is possible to zoom or move things in FFMPEG based on an audio source.

    I already played around with complex filters as they allow some audio visualization but didn’t really manage to move/zoom things based on sound. See good examples of complex filters used for audio visualization at : https://hhsprings.bitbucket.io/docs/programming/examples/ffmpeg/audio_visualization/index.html

    My current situation is that i have multiple inputs which one of should react on sound/maybe even on special frequency’s.

Navigation