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  • Encodage et transformation en formats lisibles sur Internet

    10 avril 2011

    MediaSPIP transforme et ré-encode les documents mis en ligne afin de les rendre lisibles sur Internet et automatiquement utilisables sans intervention du créateur de contenu.
    Les vidéos sont automatiquement encodées dans les formats supportés par HTML5 : MP4, Ogv et WebM. La version "MP4" est également utilisée pour le lecteur flash de secours nécessaire aux anciens navigateurs.
    Les documents audios sont également ré-encodés dans les deux formats utilisables par HTML5 :MP3 et Ogg. La version "MP3" (...)

  • Les sons

    15 mai 2013, par

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

Sur d’autres sites (5981)

  • swr-test : remove unneeded hack to test planar formats.

    26 avril 2012, par Michael Niedermayer

    swr-test : remove unneeded hack to test planar formats.

  • Revision e494df1a37 : Added ClearSystemState in a unit test There is another unit test that has been

    3 septembre 2013, par Yaowu Xu

    Changed Paths :
     Modify /test/fdct8x8_test.cc



    Added ClearSystemState in a unit test

    There is another unit test that has been failing randomly on win32
    build. Investigation has shown that the failure was caused by simd
    register state is not reset appropriately in the fdct8x8 test. This
    commit added ClearSystemState() in the teardown of this test, tests
    showed it resolved the random failure issue for win32 build.

    Related issue : https://code.google.com/p/webm/issues/detail?id=614

    Change-Id : I9381d0c1a6f4b855ccaeef1aca8c417ac8c71ee2

  • lavu/tx : implement 32 bit fixed point FFT and MDCT

    9 février 2020, par Lynne
    lavu/tx : implement 32 bit fixed point FFT and MDCT

    Required minimal changes to the code so made sense to implement.
    
FFT and MDCT tested, the output of both was properly rounded.
    
Fun fact : the non-power-of-two fixed-point FFT and MDCT are the fastest ever
    
non-power-of-two fixed-point FFT and MDCT written.
    
This can replace the power of two integer MDCTs in aac and ac3 if the
    
MIPS optimizations are ported across.
    
Unfortunately the ac3 encoder uses a 16-bit fixed point forward transform,
    
unlike the encoder which uses a 32bit inverse transform, so some modifications
    
might be required there.
    

    The 3-point FFT is somewhat less accurate than it otherwise could be,
    
having minor rounding errors with bigger transforms. However, this
    
could be improved later, and the way its currently written is the way one
    
would write assembly for it.
    
Similar rounding errors can also be found throughout the power of two FFTs
    
as well, though those are more difficult to correct.
    
Despite this, the integer transforms are more than accurate enough.
    • [DH] doc/APIchanges
    • [DH] libavutil/Makefile
    • [DH] libavutil/tx.c
    • [DH] libavutil/tx.h
    • [DH] libavutil/tx_int32.c
    • [DH] libavutil/tx_priv.h
    • [DH] libavutil/tx_template.c
    • [DH] libavutil/version.h

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