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  • 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 (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

Sur d’autres sites (9032)

  • Add Win32 GDI-based screen grabbing

    2 avril 2014, par Calvin Walton
    Add Win32 GDI-based screen grabbing

    Based on original code by Christophe Gisquet in 2010, updated to work
    
with current ffmpeg APIs.
    

    Supports grabbing a single window or an area of the screen, including
    
support for multiple monitors (Windows does funky stuff with negative
    
coordinates here).
    

    I’ve moved most of the configuration to AVOptions ; the input file name
    
is now only the string "desktop", or "title=<windowname>" to select a
    
single window. The AVOptions are the same as x11grab where possible.
    

    Code has been added to support a "show_region" mode, like x11grab, which
    
will draw a rectangle on the screen around the area being captured.
    

    Instead of duplicating code for paletted image handling, I make use of
    
the GDI API’s ability to output DIB (BMP) images, which can be run
    
through ffmpeg’s existing BMP decoder.
    

    Signed-off-by : Calvin Walton <calvin.walton@kepstin.ca>
    
Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] Changelog
    • [DH] configure
    • [DH] doc/general.texi
    • [DH] doc/indevs.texi
    • [DH] libavdevice/Makefile
    • [DH] libavdevice/alldevices.c
    • [DH] libavdevice/gdigrab.c

  • JavaCV FFmpegFrameRecorder properties explanation needed

    29 décembre 2014, par Leron

    I’m using FFmpegFrameRecorder to get the video input from my webcam and record it into a video file. The problem is that I’m building my application using a few different demo source codes that I found and I use properties some of which are not completely clear to me.

    First, here is my code snippet :

    FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(FILENAME,  grabber.getImageWidth(),grabber.getImageHeight());
    

    
        recorder.setVideoCodec(13);
    
        recorder.setFormat("mp4");
    
        recorder.setPixelFormat(avutil.PIX_FMT_YUV420P);
    
        recorder.setFrameRate(30);
    
        recorder.setVideoBitrate(10 * 1024 * 1024);
    

    
        recorder.start();
    • setVideoCodec(13) - What is the meaning of this (13) how can I understand what actual codec stands behind any number ?
    • setPixelFormat - Just get this, don’t know what it’s doing in general
    • setFrameRate(30) - I think this should be pretty clear but still what is the logic behind what frame rate we choose (isn’t the high the better ?)
    • setVideoBitrate(10*1024*1024) - again almost no idea what this does and what’s the logic behind the numbers ?

    At the end I just want to mention one last problem that I get recording video like this. If the actual length of the video is let’s say 20secs. When I play the video file created from the program it runs significantly faster. Can’t tell if it’s exactly 2 times faster than it should be but in general if I record a 20sec video then it’s played for about 10secs. What may cause this and how can I fix it ?

  • Configure ffmpeg for wowza and wp8

    11 octobre 2013, par Anton Shakalo

    I have mp4 file from my windows phone.

    There is info :

    General
    
Format                                   : MPEG-4
    
Format profile                           : Base Media / Version 2
    
Codec ID                                 : mp42
    

    
Video
    
Format                                    : AVC
    
Codec ID                                 : avc1
    
Codec ID/Info                           : Advanced Video Coding
    

    
Audio
    
Format                                    : AAC
    
Format profile                           : LC
    
Codec ID                                 : 40
    
Bit rate                                   : 96.0 Kbps
    
Sampling rate                           : 44.1 KHz

    When I stream it to wowza with next ffmpeg command ( I got it from documentation)

    ffmpeg -re -i "C:\sample2.mp4"  -vcodec libx264  -vb 150000 -g 60 -vprofile main -level 2.1 -acodec aac -ab 64000 -ar 48000 -ac 2 -vbsf h264_mp4toannexb  -f mpegts udp://127.0.0.1:10001?pkt_size=1316

    In client app I see corrupted video : http://i.imgur.com/fKEMlsB.png

    With sample file provided by wowza streamed video looks fine.

    There is info about sample file from wowza :

    General
    
Format                                   : MPEG-4
    
Format profile                           : QuickTime
    
Codec ID                                 : qt  
    

    
Video
    
Format                                   : AVC
    
Format profile                           : Baseline@L3.0
    
Codec ID                                 : avc1
    

    
Audio
    
Format                                   : AAC
    
Format profile                           : LC
    
Codec ID                                 : 40

    Can you help me with ffmpeg configuring ?
    I read documentation, but understand nothing.

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