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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • 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 (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

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  • How to use libvlc for low-frame-rate rtsp stream decoding

    11 mai 2017, par user1547688

    I am using libvlc for RTSP h.264 bitstream decoding and display in PC. For the best experience (i.e. low latency), I uses the following options

    :file-caching=0
    
:tcp-caching=0
    
:rtsp-caching=0
    
:network-caching=0
    
:clock-jitter=0
    
:avcodec-fast

    With these parameters, the latency is acceptable in comparison to the open-source project "ONVIF device manager"(ODM) where FFMPEG is used for decoding.

    When RTSP server deliver low frame-rate RTSP stream, (1 frame/second). These configuration will freeze after displaying a few frames (3-5 frames).

    I have tried 2 different approaches

    1. Disable synchronization by

      :clock-synchro=0

    This will enable the decoding process to go on, however, an accumulated period of time lagging could be observed.

    1. Use network-cache

    My experiments shows that

    :network-caching=1200

    Will make decoding go smoothly, however, the latency is over 1-2 second in comparison to ODM.

    Is there a way to handle the low frame rate issue in libvlc without providing such big latency ?

  • calculate the real duration time of a broken movie with ffmpeg/ffprobe

    26 octobre 2012, par jAckOdE

    I have a broken video file that its ffprobe (ffprobe -i movie.mkv) say its duration is about 2 hours, but the file contains only video data for first 8minutes (check by VLC Player).

    How can i get the real duration (8minutes) using ffmpeg or ffprobe ?

    here is the output :

    ffprobe version 0.7.13, Copyright (c) 2007-2011 the FFmpeg developers
    
  built on Aug  1 2012 21:08:35 with clang 3.1 (tags/Apple/clang-318.0.58)
    
  configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libdirac --enable-libschroedinger --enable-libopenjpeg --enable-libvpx --enable-libspeex --disable-libopencore-amrnb --disable-libopencore-amrwb --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
    
  libavutil    50. 43. 0 / 50. 43. 0
    
  libavcodec   52.123. 0 / 52.123. 0
    
  libavformat  52.111. 0 / 52.111. 0
    
  libavdevice  52.  5. 0 / 52.  5. 0
    
  libavfilter   1. 80. 0 /  1. 80. 0
    
  libswscale    0. 14. 1 /  0. 14. 1
    
  libpostproc  51.  2. 0 / 51.  2. 0
    
[matroska,webm @ 0x7f93dc01e600] Estimating duration from bitrate, this may be inaccurate
    
Input #0, matroska,webm, from 'Mission.mkv':
    
  Duration: 02:12:56.21, start: 0.000000, bitrate: 448 kb/s
    
    Stream #0.0: Video: mpeg4, yuv420p, 1280x528 [PAR 1:1 DAR 80:33], 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default)
    
    Stream #0.1: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s (default)

  • libavutil : Undeprecate the AVFrame reordered_opaque field

    25 octobre 2018, par Martin Storsjö
    libavutil : Undeprecate the AVFrame reordered_opaque field

    This was marked as deprecated (but only in the doxygen, not with an
    
actual deprecation attribute) in 81c623fae05 in 2011, but was
    
undeprecated in ad1ee5fa7.
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DBH] libavutil/frame.h
    • [DBH] libavutil/version.h

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