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Autres articles (69)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • 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 ;

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

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  • How to change encoding bitrate adaptively to bandwidth during live rtmp publish using ffmpeg ?

    9 mars 2019, par Jaehong Kim

    I am currently using ffmpeg to read the recorded video by native frame rate and publish the stream to nginx rtmp server.

    The command looks something like this

    ffmpeg -re -i [video file] \
    
-vcodec libx264 -r 60 -g 120 -keyint_min 120 -vb [bitrate]\
    
-f flv -y rtmp://[server url];

    I want to change the encoding bitrate of the software encoder manually,
    according to the bandwidth fluctuation. For example,

    If 2kbps< estimated_bandwidth <4kbps,  
    
     change ffmpeg bitrate to 3kbps, 1280x720 size

    However, I couldn’t find any framework or codec that supports dynamic bitrate change during encoding.

    Is there a way that I could achieve this ?
    Last thing that I want to do is to implement the codec myself because I have no background.

  • avfilter/vf_libplacebo : don't force dovi frames to bt.2020-ncl

    30 octobre 2023, par Niklas Haas
    avfilter/vf_libplacebo : don't force dovi frames to bt.2020-ncl

    This is at odds with the YUV matrix negotiation API, in which such
    
dynamic changes in YUV encoding are no longer easily possible. There is
    
also no really strong motivating reason to do this, since the choice of
    
YUV matrix is essentially arbitrary and not actually related to the
    
Dolby Vision decoding process.
    • [DH] libavfilter/vf_libplacebo.c

  • fftools/ffmpeg_filter : embed displaymatrix into private context

    13 mai 2023, par Anton Khirnov
    fftools/ffmpeg_filter : embed displaymatrix into private context

    It has a small fixed size, so it is better to embed it rather than deal
    
with dynamic allocation.
    • [DH] fftools/ffmpeg_filter.c

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