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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • 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.

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  • Revision e02dc84c1a : Adds a speed feature for fast 1-loop forw updates Incorporates a speed feature

    28 août 2013, par Deb Mukherjee

    Changed Paths :
     Modify /vp9/encoder/vp9_bitstream.c


     Modify /vp9/encoder/vp9_onyx_if.c


     Modify /vp9/encoder/vp9_onyx_int.h



    Adds a speed feature for fast 1-loop forw updates

    Incorporates a speed feature for fast forward updates of
    coefficients. This feature takes 3 values :
    0 - use standard 2-loop version
    1 - use a 1-loop version
    2 - use a 1-loop version with reduced updates

    Results : derfraw300 +0.007% (on speed 0) at feature value = 1
    -0.160% (on speed 0) at feature value = 2

    There is substantial speed up at speeds 2 and above for low
    resolution sequences where the entropy updates are a big part
    of the overall computations.

    Change-Id : Ie96fc50777088a5bd441288bca6111e43d03bcae

  • Revision 44e039b4f5 : Further clean up of speed 4 Speed 4 still does not give a big gain over speed 3

    3 octobre 2013, par Paul Wilkins

    Changed Paths :
     Modify /vp9/encoder/vp9_onyx_if.c



    Further clean up of speed 4

    Speed 4 still does not give a big gain over speed 3.
    This just cleans it up a little from the last patch and comments
    out features that do not seem to be giving much benefit.

    Change-Id : I5f366e6160e1dbe5dc45cf5eb90cc02712baa1b6

  • Revision 24856b6abc : Speed feature to skip split partition based on var Adds a speed feature to disa

    3 août 2013, par Deb Mukherjee

    Changed Paths :
     Modify /vp9/encoder/vp9_encodeframe.c


     Modify /vp9/encoder/vp9_onyx_if.c


     Modify /vp9/encoder/vp9_onyx_int.h



    Speed feature to skip split partition based on var

    Adds a speed feature to disable split partition search based on a
    given threshold on the source variance. A tighter threshold derived
    from the threshold provided is used to also disable horizontal and
    vertical partitions.

    Results on derfraw300 :
    threshold = 16, psnr = -0.057%, speedup 1% (football)
    threshold = 32, psnr = -0.150%, speedup 4-5% (football)
    threshold = 64, psnr = -0.570%, speedup 10-12% (football)

    Results on stdhdraw250 :
    threshold = 32, psnr = -0.18%, speedup is somewhat more than derf
    because of a larger number of smoother blocks at higher resolution.

    Based on these results, a threshold of 32 is chosen for speed 1,
    and a threshold of 64 is chosen for speeds 2 and above.

    Change-Id : If08912fb6c67fd4242d12a0d094783a99f52f6c6

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