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Autres articles (29)

  • 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" (...)

  • 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 ;

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

Sur d’autres sites (5953)

  • why transparent drawbox does not work on some video sources ?

    28 mai 2019, par Wang

    It works on smptebars, smptehdbars, testsrc and testsrc2 but not other sources.

    ffplay -loglevel trace -f lavfi -i testsrc=r=1:d=1:size=800x600 -vf "drawbox=x=0:y=0:w='iw/2':h='ih/2':t=max:c=white@0.5"

    When I try this I can see the transparent box. But if I use color, and rgbtestsrc sources it does not work.

    ffplay -loglevel trace -f lavfi -i rgbtestsrc=r=1:d=1:size=800x600 -vf "drawbox=x=0:y=0:w='iw/2':h='ih/2':t=max:c=white@0.5"
    
ffplay -loglevel trace -f lavfi -i color=c=red:r=1:d=1:size=800x600 -vf "drawbox=x=0:y=0:w='iw/2':h='ih/2':t=max:c=white@0.5"

    after looking at the trace output, it seems the transparency only works on rgb24 and yuv formats (yuv444p, yuv420p, etc.), this is surprising since we normally assume the rgba source can work with alpha channel.

    The following command change the pix_fmt to rgb24, then it works :

    ffplay -loglevel trace -f lavfi -i rgbtestsrc=r=1:d=1:size=800x600 -vf "format=pix_fmts=rgb24,drawbox=x=0:y=0:w='iw/2':h='ih/2':t=max:c=white@0.5"

    The following command change the pix_fmt to rgba, then it does not work :

    ffplay -loglevel trace -f lavfi -i rgbtestsrc=r=1:d=1:size=800x600 -vf "format=pix_fmts=rgba,drawbox=x=0:y=0:w='iw/2':h='ih/2':t=max:c=white@0.5"

    Why is that ? and how can I fix this ?

  • Install ffmpeg in windows 7 x64

    9 avril 2013, par Bruno Ribeiro

    I have a problem to install ffmpeg, I tried several tutorials but did not.
    I tried using the dll and executables but could not get the result is always.

    "Fatal error: Call to undefined function dl ()"

    I went on the official website and downloaded the dlls did the procedure in playing in system32 and php / ex and declared the extension in php.ini but does not work.
    I am using the version of php 5.3.13.
    I was thinking it was the version of php what do you think ? I'm using WampServer observation

  • FFMPEG no metadata

    1er décembre 2014, par user2601259

    I am trying to dump all the important info using ffmpeg.exe -i "1.mp4" -f ffmetadata metadata.txt yet all I get is

    ;FFMETADATA1
    
major_brand=isom
    
minor_version=1
    
compatible_brands=isom

    Official documentation gives no clues at all

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