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  • Gestion des droits de création et d’édition des objets

    8 février 2011, par

    Par défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;

  • Problèmes fréquents

    10 mars 2010, par

    PHP et safe_mode activé
    Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
    La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site

  • 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 (...)

Sur d’autres sites (7447)

  • How to segment a video and then concatenate back into original one with ffmpeg

    23 décembre 2016, par steve

    I am surveying on distributed video transcoding with FFmpeg. I have found that there is a good script on https://github.com/nergdron/dve/blob/master/dve.

    The script mainly uses the segment and concatenate filters of FFmpeg. I want to do a simple test first. However, I can not split the video into segments and then concatenate back to original video (with the same codec). I have tried with the following command :

    a. Chunk the video

    ffmpeg -fflags +genpts -i Test.avi -map 0 -codec copy -f segment -segment_format avi -v error chunk-%03d.seg

    b. Building the chunking list :

    #!/bin/bash -e
    
set -e
    
echo "ffconcat version 1.0" > concat.txt
    
for f in `ls chunk-*.seg | sort`; do
    
echo "file $f" >> concat.txt
    
done

    c. Concatenate the chunks

    ffmpeg  -y -v error -i concat.txt -f concat -map 0 -c copy -f avi output.avi

    Then when I run ffprobe I get the following message which says it is a non-interleaved AVI :

        ffprobe version N-82301-g1bbb18f Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 5.4.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
    
  libavutil      55. 35.100 / 55. 35.100
    
  libavcodec     57. 66.101 / 57. 66.101
    
  libavformat    57. 57.100 / 57. 57.100
    
  libavdevice    57.  2.100 / 57.  2.100
    
  libavfilter     6. 66.100 /  6. 66.100
    
  libswscale      4.  3.100 /  4.  3.100
    
  libswresample   2.  4.100 /  2.  4.100
    
  libpostproc    54.  2.100 / 54.  2.100
    
[avi @ 00000000028e3700] non-interleaved AVI
    
Input #0, avi, from 'output.avi':
    
  Metadata:
    
    encoder         : Lavf57.57.100
    
  Duration: 74:43:47.82, start: 0.000000, bitrate: 17 kb/s
    
    Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 640x368 [SAR 1:1 DAR 40:23], 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
    
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p, 112 kb/s

    I have tried a few other things without success. Any help would be greatly appreciated. Thanks in advance !!

  • Why does the compiler convert bool to integer and back to bool instead of returning the bool itself ?

    22 juin 2016, par Jack

    I was reading VideoFileWriter class from AForge.Video.FFMPEG assembly via ILSPY (I was interested to see how a particular method works) and found this :

    public bool IsOpen {
    
    [return: MarshalAs(UnmanagedType.U1)]
    
    get {
    
        return ((this.data != null) ? 1 : 0) != 0;
    
    }
    
}

    What’s the reason to do that bool to integer than back to bool conversion rather just do this.data != null ?

  • Changelog : Add back "version next"

    6 mars 2015, par Michael Niedermayer
    Changelog : Add back "version next"

    Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] Changelog

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