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Médias (2)

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Autres articles (79)

  • MediaSPIP Core : La Configuration

    9 novembre 2010, par

    MediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
    Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...)

  • 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" ;

  • 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.

Sur d’autres sites (5536)

  • Color shift when encoding DNxHD QuickTime Video [closed]

    13 mai 2013, par Yani

    I have been tasked with developing the Editorial submission pipeline for an animated feature film project. Our studio is based on Windows 7 and the Editing team is using Avid Media Composer. We have decided to go with the "fast import" approach for bringing media into Avid. My tools take some frames and encode DNxHD QuickTime videos from them, then we write out an ALE document to assist with the batch importing of the delivery content. We call it the "fast import" approach because Avid only has to change the video container from MOV to MXF and it doesn't have to do any real encoding which is usually the time consuming part.

    I have tried comparing DNxHD QuickTime videos encoded using FFmpeg, RVIO and Nuke. The color in each video is different but the only one that matches the video created by importing frames directly into the Avid is the video generated by Nuke. I have heard the color shift may be caused by the way the Apple QuickTime libraries manage color on the Windows platform, is this true ? If so, how is Nuke able to produce the correct output ? Also, is there any way I can produce the correct output using FFmpeg or RVIO ?

  • VLC - Transcoding a 4k Picture to a Transport Stream

    20 janvier 2020, par gdogg371

    After a lot of crying, stamping my feet and pulling my hair out, I have now managed to transcode my 4k capture card into an RTP MPEG2 transport stream using VLC, as per the below :

    vlc dshow:// :dshow-vdev="Video (00 Pro Capture HDMI 4K+)" :dshow-adev="Audio (2- 00 Pro Capture HDMI 4K+)" :dshow-threads=8 :dshow-aspect-ratio=16\:9 :dshow-size="2160x1080" :dshow-pixel_format=NV12 :dshow-tune=film :dshow-preset=veryslow :dshow-vcodec=hevc_nvenc :dshow-fps=50 :dshow-crf=0 :dshow-acodec=mp4a :dshow-stereo-mode=5 :dshow-force-surround-sound=0 :dshow-ab=128 :dshow-samplerate=44100 :no-dshow-config :live-caching=100 :sout=#transcode{venc=ffmpeg,vcodec=mp2v,threads=8,aspect=16:9,width=2160,height=1080,fps=50,aenc=ffmpeg,acodec=a52,ab=1500,channels=6,samplerate=48000,soverlay}:rtp{dst=192.168.1.15,port=8554,mux=ts}

    My remaining issue though is, that I cannot get a 4k picture to transcode cleanly. I get horrendous stutter of the picture if I try and 2160x1080 at 50 fps is the best I have been able to achieve.

    The Magewell 4k card I have been using runs natively at 3840x2160 at 50fps, outputting a raw video signal. Is there some kind of built in limitation of MPEG2 where it cannot handle a 4k signal that I am not aware of ?

    Can anyone suggests some amendments to the above, so as to process a 4k signal properly ?

    Thanks

  • lavc/qsvdec : export AVFilmGrainParams side data

    24 janvier 2022, par Haihao Xiang
    lavc/qsvdec : export AVFilmGrainParams side data

    When AV_CODEC_EXPORT_DATA_FILM_GRAIN is present, AV1 decoder should
    
disable film grain application and export the corresponding side data
    

    Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>
    • [DH] libavcodec/qsv_internal.h
    • [DH] libavcodec/qsvdec.c

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