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Médias (91)

Autres articles (48)

  • Emballe Médias : Mettre en ligne simplement des documents

    29 octobre 2010, par

    Le plugin emballe médias a été développé principalement pour la distribution mediaSPIP mais est également utilisé dans d’autres projets proches comme géodiversité par exemple. Plugins nécessaires et compatibles
    Pour fonctionner ce plugin nécessite que d’autres plugins soient installés : CFG Saisies SPIP Bonux Diogène swfupload jqueryui
    D’autres plugins peuvent être utilisés en complément afin d’améliorer ses capacités : Ancres douces Légendes photo_infos spipmotion (...)

  • 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" (...)

Sur d’autres sites (9118)

  • lavc/vvc : Check slice structure

    10 janvier, par Frank Plowman
    lavc/vvc : Check slice structure

    The criteria for slice structure validity is similar to that of
    
subpicture structure validity that we saw not too long ago [1].
    
The relationship between tiles and slices must satisfy the following
    
properties :
    

    * Exhaustivity.  All tiles in a picture must belong to a slice.  The
    
  tiles cover the picture, so this implies the slices must cover the
    
  picture.
    
* Mutual exclusivity.  No tile may belong to more than one slice, i.e.
    
  slices may not overlap.
    

    In most cases these properties are guaranteed by the syntax.  There is
    
one noticable exception however : when pps_tile_idx_delta_present_flag is
    
equal to one, each slice is associated with a syntax element
    
pps_tile_idx_delta_val[i] which "specifies the difference between the
    
tile index of the tile containing the first CTU in the ( i + 1 )-th
    
rectangular slice and the tile index of the tile containing the first
    
CTU in the i-th rectangular slice" [2].  When these syntax elements are
    
present, the i-th slice can begin anywhere and the usual guarantees
    
provided by the syntax are lost.
    

    The patch detects slice structures which violate either of the two
    
properties above, and are therefore invalid, while building the
    
slice map.  Should the slice map be determined to be invalid, an
    
AVERROR_INVALIDDATA is returned.  This prevents issues including
    
segmentation faults when trying to decode,  invalid bitstreams.
    

    [1] : https://ffmpeg.org//pipermail/ffmpeg-devel/2024-October/334470.html
    
[2] : H.266 (V3) Section 7.4.3.5, Picture parameter set RBSP semantics
    

    Signed-off-by : Frank Plowman <post@frankplowman.com>
    • [DH] libavcodec/vvc/ps.c

  • Empty audio backends for torchaudio list audio backends, with ffmpeg installed on system libraries [closed]

    28 mars, par Alberto Agudo Dominguez

    I installed torchaudio 2.5.1 and a system install of ffmpeg on Windows and get :

    &#xA;

    PS C:\Users\> ffmpeg -version&#xA;ffmpeg version 2025-01-05-git-19c95ecbff-essentials_build-www.gyan.dev Copyright (c) 2000-2025 the FFmpeg developers&#xA;built with gcc 14.2.0 (Rev1, Built by MSYS2 project)&#xA;configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband&#xA;libavutil      59. 54.101 / 59. 54.101&#xA;libavcodec     61. 31.100 / 61. 31.100&#xA;libavfilter    10.  6.101 / 10.  6.101&#xA;libswresample   5.  4.100 /  5.  4.100&#xA;libpostproc    58.  4.100 / 58.  4.100&#xA;&#xA;PS C:\Users\> python&#xA;Python 3.12.5 (tags/v3.12.5:ff3bc82, Aug  6 2024, 20:45:27) [MSC v.1940 64 bit (AMD64)] on win32&#xA;Type "help", "copyright", "credits" or "license" for more information.&#xA;>>> import torchaudio&#xA;>>> torchaudio.list_audio_backends()&#xA;[]&#xA;

    &#xA;

    Hence ffmpeg is added to the path and recognized by the console, but not by torchaudio.

    &#xA;

  • avformat/iamf_parse : reject ambisonics mode > 1

    29 novembre 2024, par Michael Niedermayer
    avformat/iamf_parse : reject ambisonics mode > 1

    ambisonics mode > 1 does not initialize any layer but layer 0
    
is unconditionally dereferenced
    

    Fixes : poc-2024-11
    
Fixes : null pointer dereference
    
Found-by : 苏童 <220235212@seu.edu.cn>
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavformat/iamf_parse.c

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