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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.

  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

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  • OpenCV 3.0.0 make error with FFMPEG

    24 mars 2016, par Ujjwal Aryan

    I have been using OpenCV for a while. However I have recently changed my system to a cluster where I do not have any admin permission. The problem is like this :

    In my home folder, I installed FFMPEG (latest stable version available on ffmpeg site). I installed it in $HOME, and so in $HOME/lib there are the library files installed. For more information I compiled FFMPEG with following options :

    ./configure --prefix=$HOME --enable-shared --enable-pic

    I then downloaded the latest stable version of OpenCV 3.0.0 and configured it using ccmake. When I try to make -j8, it gives me the following error.

     Scanning dependencies of target opencv_videoio
    
[ 63%] [ 63%] [ 63%] [ 63%] [ 63%] [ 63%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap.cpp.o
    
Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_mjpeg_decoder.cpp.o
    
Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_images.cpp.o
    
Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_v4l.cpp.o
    
Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_mjpeg_encoder.cpp.o
    
Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_ffmpeg.cpp.o
    
In file included from /home/uujjwal/libraries/opencv-nogpu/opencv-3.0.0/modules/videoio/src/cap_ffmpeg.cpp:45:0:
    
/home/uujjwal/libraries/opencv-nogpu/opencv-3.0.0/modules/videoio/src/cap_ffmpeg_impl.hpp:1546:71: error: use of enum 'AVCodecID' without previous declaration
    
/home/uujjwal/libraries/opencv-nogpu/opencv-3.0.0/modules/videoio/src/cap_ffmpeg_impl.hpp:1556:83: error: use of enum 'AVCodecID' without previous declaration
    
make[2]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_ffmpeg.cpp.o] Error 1
    
make[2]: *** Waiting for unfinished jobs....

    However without ffmpeg support it works fine. However I need ffmpeg support due to the nature of my work.

    In trying to resolve the problem, I tried installing OpenCV 2.4.11 but it also gave this error. The latest GIT version does not give me this error but rather an error a part of which goes like this

    Linking CXX shared library ../../lib/libopencv_highgui.so /usr/bin/ld: /home/matheus/ffmpeg_build/lib/../lib/libavcodec.a(avpacket.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used

    I have pasted the above error from another unresolved question online and so the folder names are different but the relocation error is exactly the same.

    In trying to resolve the problem I searched and found the following link http://answers.opencv.org/question/12597/build-problems-for-opencv-241-with-ubuntu-1204-lts/

    However, one of the answers over there mentioned changing some lines in cap_ffmpeg_impl.hpp file. I tried doing that but either i am not able to do it correctly or something else is going wrong and it is not working. Exact line numbers and exact changes are not mentioned and so I am having difficulty changing things and being sure.

    I am using Fedora 19 (Schrodinger Cat) as the operating system I hope the details of my question are clear and I hope that the community would oblige me with a good response.

    Regards
    Ujjwal

  • lavu : Drop FF_API_GET_CHANNEL_LAYOUT_COMPAT cruft

    5 septembre 2015, par Hendrik Leppkes
    lavu : Drop FF_API_GET_CHANNEL_LAYOUT_COMPAT cruft

    FATE refs changed to accomodate for the new default behavior of the function.
    
Numbers are now interpreted as a channel layout, instead of a number of channels.
    • [DH] libavutil/channel_layout.c
    • [DH] libavutil/internal.h
    • [DH] libavutil/opt.c
    • [DH] libavutil/version.h
    • [DH] tests/ref/fate/filter-formats

  • ffmpeg : segment muxer cutting segments early

    4 mars 2020, par M. Parker

    My current project is an attempt to use the segment muxer to divide an input stream into mp4 files of a particular duration (say, 3 seconds). Use of the segment_time option after allocating the muxer ought to have me covered. What I am seeing is segmenting based on a particular number of data units. If I try to copy the stream, it will cut the segment after 16 AVPackets have been sent to the output stream. If I try to encode it (libx264), the file will instead be written after 16 AVFrames. Changing the segment_time variable doesn’t alter the number of units written/file length, although larger numbers can result in errors. I figure I have to be missing something obvious. Any ideas ?

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