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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 (...)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • 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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  • Can any part of an ffmpeg command use expressions ?

    6 avril 2022, par corgrath

    I am still learning how expressions work with ffmpeg, whether any part of a command can be using expression or not.

    


    As an example, I have this command :

    


    ffmpeg -y -i input.mp3 -af "sofalizer=sofa=ClubFritz1.sofa:type=freq:radius=2:speakers='FL 45|FR 45|BL 45|BR 45'" output.mp3

    


    (The file CubFritz1.sofa can by the way be downloaded here)

    


    Which basically applies the sofalizer effect and specify that each channel should be heard / come from, the left side (45 degrees) of the audio.

    


    This works as expected.

    


    However, I cannot seem to get expressions working in the command at all.

    


    For example this :

    


    ffmpeg -y -i input.mp3 -af "sofalizer=sofa=ClubFritz1.sofa:type=freq:radius=2:speakers='FL if(0, 45, 45)'|'FR if(0, 45, 45)'|'BL if(0, 45, 45)'|'BR if(0, 45, 45)'" output.mp3

    


    Which does an if(0, 45, 45) as a test, so regardless the outcome should be 45, right ?

    


    However, when I run this command, it does not seem to work anymore, meaning the sound is not purely coming from the left side.

    


    I have even tried changing the location of the single ' in the command without luck :

    


    ffmpeg -y -i input.mp3 -af "sofalizer=sofa=ClubFritz1.sofa:type=freq:radius=2:speakers=FL 'if(0, 45, 45)'|FR 'if(0, 45, 45)'|BL 'if(0, 45, 45)'|BR 'if(0, 45, 45)'" output.mp3

    


    My question is, what are the rules for getting expressions working in an ffmpeg command ?

    


    How would the command be rewritten so that the if(0, 45, 45) works ?

    


  • movdec : handle 0x7fff langcode as macintosh per the specs

    21 mars 2012, par Baptiste Coudurier
    movdec : handle 0x7fff langcode as macintosh per the specs

    The correct point that seperates ISO and MAC language codes is 0x400
    
according to the current QT spec. Old QT specs did not list where this
    
seperation is but apparently only defined the meaning of the first 137.
    • [DBH] libavformat/isom.c
    • [DBH] libavformat/mov.c

  • libavfilter/dnn/dnn_backend{openvino, tf} : check memory alloc non-NULL

    14 octobre 2020, par Chris Miceli
    libavfilter/dnn/dnn_backendopenvino, tf : check memory alloc non-NULL

    These previously would not check that the return value was non-null
    
meaning it was susceptible to a sigsegv. This checks those values.
    • [DH] libavfilter/dnn/dnn_backend_openvino.c
    • [DH] libavfilter/dnn/dnn_backend_tf.c

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