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  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

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  • Revision 9f5811c2da : Add joint motion search in comp_inter_inter mode(experiment) In current code, m

    7 mai 2013, par Yunqing Wang

    Changed Paths :
     Modify /configure


     Modify /vp9/common/vp9_enums.h


     Modify /vp9/common/vp9_rtcd_defs.sh


     Modify /vp9/encoder/vp9_mcomp.c


     Modify /vp9/encoder/vp9_mcomp.h


     Modify /vp9/encoder/vp9_onyx_if.c


     Modify /vp9/encoder/vp9_rdopt.c


     Modify /vp9/encoder/vp9_variance.h


     Modify /vp9/encoder/vp9_variance_c.c



    Add joint motion search in comp_inter_inter mode(experiment)

    In current code, motion vectors got from single prediction mode are used
    in compound prediction mode directly. These motion vectors may not give
    accurate prediction since they are searched independently. In this patch,
    we took Pascal's suggestion, and did joint motion search in compound
    prediction mode to find better motion vectors in this situation.
    Test results :
    Overall PSNR : 0.570%(derf), 0.918%(stdhd) ;
    SSIM : 0.572%(derf), 1.009%(stdhd) ;

    The encoder is a little slower. This can be improved since some c
    code is used in motion search.

    Change-Id : Ib30c9240f6c56c9b070867b4ca89412a76d9f3c6

  • Revision d97fd3eef6 : Non transform coding experiment Non-transform option is enabled in both intra a

    12 novembre 2014, par hui su

    Changed Paths :
     Modify /configure


     Modify /vp9/common/vp9_blockd.h


     Modify /vp9/common/vp9_idct.c


     Modify /vp9/common/vp9_idct.h


     Modify /vp9/decoder/vp9_decodeframe.c


     Modify /vp9/decoder/vp9_decodemv.c


     Modify /vp9/encoder/vp9_bitstream.c


     Modify /vp9/encoder/vp9_dct.c


     Modify /vp9/encoder/vp9_encodemb.c


     Modify /vp9/encoder/vp9_firstpass.c


     Modify /vp9/encoder/vp9_rdopt.c



    Non transform coding experiment

    Non-transform option is enabled in both intra and inter modes.
    In lossless case, the average coding gain on screen content
    clips is 11.3% in my test.

    Change-Id : I2e8de515fb39e74c61bb86ce0f682d5f79e15188

  • Revision e18b104462 : Palette experiment : adaptly update probs Also make changes to transmit palette-

    7 mars 2015, par hui su

    Changed Paths :
     Modify /vp9/common/vp9_blockd.h


     Modify /vp9/common/vp9_entropymode.c


     Modify /vp9/common/vp9_entropymode.h


     Modify /vp9/common/vp9_enums.h


     Modify /vp9/common/vp9_palette.c


     Modify /vp9/common/vp9_palette.h


     Modify /vp9/decoder/vp9_decodemv.c


     Modify /vp9/encoder/vp9_bitstream.c


     Modify /vp9/encoder/vp9_encodeframe.c


     Modify /vp9/encoder/vp9_encoder.c


     Modify /vp9/encoder/vp9_rdopt.c



    Palette experiment : adaptly update probs

    Also make changes to transmit palette-enabled flag using
    neighbor blocks as context.

    on screen_content
    — enable-palette +7.35%

    on derflr
    with all other experiments +6.05%

    Change-Id : Id6c2f726d21913d54a3f86ecfea474a4044c27f6

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