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  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

Sur d’autres sites (12348)

  • What can be the substitute for SDL to direct ffmpeg decoded videos to screen in IOS ?

    18 octobre 2012, par jAckOdE

    I making a iOS video player using ffmpeg, the flow likes this :

    Video File---> [FFMPEG Decoder] —> decoded frames —> [a media director] —> /iphone screen (full and partial)/

    A media director will handle the tasks of rendering decoded video frames to iOS ui (UIView, UIWindow etc), outputting audio samples to iOS speaker, and threads management.

    SDL is one of those libs, but SDL is mainly made for game making purpose and seem to be not really mature for iOS.

    What can be the substitute for SDL ?

  • Warp video and audio non-linearly with ffmpeg

    25 novembre 2016, par Simon Streicher

    I have a non-linear mapping of the time-locations of an input video to be warped to the time-locations of an output video. Here is an example :

    enter image description here

    I therefore want to take the input video and this mapping and accelerate-and-decelerate appropriately to produce the output video (audio included). Is there any functionality in ffmpeg to accomplish this ? Any frame interpolation may be nearest neighbour or something silly (it doesn’t need to look good), but I would prefer something sophisticated for the audio.

    I have Python along with the whole numpy-scipy stack to my disposal to convert this mapping to something more parseable by ffmpeg.

  • ffmpeg content pixelation when HDR to SDR ?

    22 juin 2022, par Peter Hammi

    I would like to re-encode an HDR source to an SDR output using ffmpeg. To accomplish this task, I use the following filter :

    


    -vf zscale=tin=smpte2084:min=bt2020nc:pin=bt2020:rin=tv:t=smpte2084:m=bt2020nc:p=bt2020:r=tv,zscale=t=linear:npl=100,format=gbrpf32le,zscale=p=bt709,tonemap=tonemap=hable:desat=0,zscale=t=bt709:m=bt709:r=tv,format=yuv420p -strict -1 -f yuv4mpegpipe


    


    Basically this solves the problem of HDR to SDR color ranges and the result is "ok" but in some scenes I get pixelation for some reason.
The input clip I have is 4k HDR @15 Mbit/s (HEVC) where I now want to scale it down to 1080p SDR (h.264). What bit rate is recommended here ? Normally I would say 5-7,5 Mbit/s is fine, but it seems to make not a big difference in terms of HDR to SDR and my pixelation issue.

    


    Is there maybe something wrong with my filter ?

    


    Thanks in advance

    


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