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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

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  • How to lossless rotate video from Sony A7Rii in FFMPEG avoiding codec error ?

    12 janvier 2020, par Jeffs

    I have a bunch of videos filmed on a Sony A7Rii that are upside down and need to be flipped 180. I’d like to do this lossless and been trying to use the following command :

    ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate=180 output.mp4

    I understand this updates orientation information in the metadata of the video file, avoiding the need to reencode. However, it is generating an error relating to the audio codec :

    [mp4 @ 000001db6a69cd80] Could not find tag for codec pcm_s16be in stream #1, codec not currently supported in container
    Could not write header for output file #0 (incorrect codec parameters ?) : Invalid argument
    Stream mapping :
    Stream #0:0 -> #0:0 (copy)
    Stream #0:1 -> #0:1 (copy)

    After some searching, I understand this is expected behaviour because the MP4 container isn’t supposed to have audio encoded with that codec. Unfortunately for me, that is how the Sony A7Rii produces files.

    What FFMPEG command will offer the best work-around ? Ideally I’d not re-encode the audio, but that would be tolerable if there is no other way.

    Thanks !

  • avcodec/hevcdec : apply H.274 film grain

    29 septembre 2021, par Niklas Haas
    avcodec/hevcdec : apply H.274 film grain

    Similar in spirit and design to 66845cffc3bbb, but slightly simpler due
    
to the lack of interlaced frames in HEVC. See that commit for more
    
details.
    

    For the seed value, since no specification for this appears to exist, I
    
semi-arbitrarily decided to base it off the POC id alone, since there's
    
no analog of the idr_pic_id in HEVC's I-frames. This design is stable
    
across remuxes and seeks, but changes for adjacent frames with a period
    
that's typically long enough not to be noticeable, which makes it
    
satisfy all of the requirements that a film grain seed should have.
    

    Tested with and without threading, using a patch to insert film grain
    
metadata artificially (for lack of real files containing film grain).
    • [DH] libavcodec/hevc_refs.c
    • [DH] libavcodec/hevcdec.c
    • [DH] libavcodec/hevcdec.h

  • Révision 21338 : Report de c21337 : Ne pas confondre le Kazakh (kk - http://fr.wikipedia.org/wiki...

    5 mai 2014, par kent1 -

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