Recherche avancée

Médias (0)

Mot : - Tags -/presse-papier

Aucun média correspondant à vos critères n’est disponible sur le site.

Autres articles (47)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • 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 (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

Sur d’autres sites (5962)

  • Overlay filter in LibAV/FFMpeg returns strange (tripled) frame in C

    28 juillet 2014, par gkuczera

    I tried to make a program, which merges two frames. I use LibAV (libav-win32-20140428) under Windows 7 64 and Visual Studio 2013.
    But the result is quite odd.

    http://oi58.tinypic.com/rcobnm.jpg

    The filter which was used is Overlay. When I change the graph, to the one, that uses only one stream and add FADE effect, everything works like a charm. But OVERLAY and eg. DRAWBOX give me strange distortion (three frames on one and black and white effect). Here is the code :

    static int init_filter_graph(AVFilterGraph **pGraph, AVFilterContext **pSrc1, AVFilterContext **pSink)
    
{
    
    AVFilterGraph* tFilterGraph;
    
    AVFilterContext* tBufferContext1;
    
    AVFilter* tBuffer1;
    
    AVFilterContext* tColorContext;
    
    AVFilter* tColor;
    
    AVFilterContext* tOverlayContext;
    
    AVFilter* tOverlay;
    
    AVFilterContext* tBufferSinkContext;
    
    AVFilter* tBufferSink;
    

    
    int tError;
    

    
    /* Create a new filtergraph, which will contain all the filters. */
    
    tFilterGraph = avfilter_graph_alloc();
    

    
    if (!tFilterGraph) {
    
        return -1;
    
    }
    

    
    { // BUFFER FILTER 1
    
        tBuffer1 = avfilter_get_by_name("buffer");
    
        if (!tBuffer1) {
    
            return -1;
    
        }
    
        tBufferContext1 = avfilter_graph_alloc_filter(tFilterGraph, tBuffer1, "src1");
    
        if (!tBufferContext1) {
    
            return -1;
    
        }
    

    
        av_dict_set(&tOptionsDict, "width", "320", 0);
    
        av_dict_set(&tOptionsDict, "height", "240", 0);
    
        av_dict_set(&tOptionsDict, "pix_fmt", "bgr24", 0);
    
        av_dict_set(&tOptionsDict, "time_base", "1/25", 0);
    
        av_dict_set(&tOptionsDict, "sar", "1", 0);
    
        tError = avfilter_init_dict(tBufferContext1, &tOptionsDict);
    
        av_dict_free(&tOptionsDict);
    
        if (tError < 0) {
    
            return tError;
    
        }
    
    }
    

    
    { // COLOR FILTER
    
        tColor = avfilter_get_by_name("color");
    
        if (!tColor) {
    
            return -1;
    
        }
    
        tColorContext = avfilter_graph_alloc_filter(tFilterGraph, tColor, "color");
    
        if (!tColorContext) {
    
            return -1;
    
        }
    

    
        av_dict_set(&tOptionsDict, "color", "white", 0);
    
        av_dict_set(&tOptionsDict, "size", "20x120", 0);
    
        av_dict_set(&tOptionsDict, "framerate", "1/25", 0);
    
        tError = avfilter_init_dict(tColorContext, &tOptionsDict);
    
        av_dict_free(&tOptionsDict);
    
        if (tError < 0) {
    
            return tError;
    
        }
    
    }
    

    
    { // OVERLAY FILTER
    
        tOverlay = avfilter_get_by_name("overlay");
    
        if (!tOverlay) {
    
            return -1;
    
        }
    
        tOverlayContext = avfilter_graph_alloc_filter(tFilterGraph, tOverlay, "overlay");
    
        if (!tOverlayContext) {
    
            return -1;
    
        }
    

    
        av_dict_set(&tOptionsDict, "x", "0", 0);
    
        av_dict_set(&tOptionsDict, "y", "0", 0);
    
        av_dict_set(&tOptionsDict, "main_w", "120", 0);
    
        av_dict_set(&tOptionsDict, "main_h", "140", 0);
    
        av_dict_set(&tOptionsDict, "overlay_w", "320", 0);
    
        av_dict_set(&tOptionsDict, "overlay_h", "240", 0);
    
        tError = avfilter_init_dict(tOverlayContext, &tOptionsDict);
    
        av_dict_free(&tOptionsDict);
    
        if (tError < 0) {
    
            return tError;
    
        }
    
    }
    

    
    { // BUFFERSINK FILTER
    
        tBufferSink = avfilter_get_by_name("buffersink");
    
        if (!tBufferSink) {
    
            return -1;
    
        }
    

    
        tBufferSinkContext = avfilter_graph_alloc_filter(tFilterGraph, tBufferSink, "sink");
    
        if (!tBufferSinkContext) {
    
            return -1;
    
        }
    

    
        tError = avfilter_init_str(tBufferSinkContext, NULL);
    
        if (tError < 0) {
    
            return tError;
    
        }
    
    }
    

    
    // Linking graph
    
    tError = avfilter_link(tBufferContext1, 0, tOverlayContext, 0);
    
    if (tError >= 0) {
    
        tError = avfilter_link(tColorContext, 0, tOverlayContext, 1);
    
    }
    
    if (tError >= 0) {
    
        tError = avfilter_link(tOverlayContext, 0, tBufferSinkContext, 0);
    
    }
    
    if (tError < 0) {
    
        return tError;
    
    }
    

    
    tError = avfilter_graph_config(tFilterGraph, NULL);
    
    if (tError < 0) {
    
        return tError;
    
    }
    

    
    *pGraph = tFilterGraph;
    
    *pSrc1 = tBufferContext1;
    
    *pSink = tBufferSinkContext;
    

    
    return 0;
    
}

    What do you think is the reason ?

  • android ffmpeg halfninja av_open_input_file returns -2 (no such file or directory)

    20 janvier 2012, par cdavidyoung

    I have built ffmpeg for Android using the code and method described at

    https://github.com/halfninja/android-ffmpeg-x264

    using Ubuntu running in VirtualBox on windows. I then copied libvideokit.so into the Project\libs\armeabi folder of a Windows copy of the provided projects. From there I was able to run the ProjectTest from Eclipse on my Android device. I can see the ffmpeg code being executed but when it gets to the point of opening the input file it gives me the indicated error. I have noticed some discussion of this problem at

    FFMpeg on Android, undefined references to libavcodec functions, although it is listed on command line

    but the solutions have not helped since the file protocol is enabled in this build and I also tried putting "file :" in front of the filepath to no avail. For completeness I tried setting minimal_featureset=0 to enable all the defaults but this gives me the same error. Below is a snapshot of the logcat from Eclipse showing the output from Videokit with an extra call to LOGE to display the result from av_open_input_file. Any suggestions of things to try would be greatly appreciated.

    10-23 11:57:33.888: DEBUG/Videokit(4830): run() called
    
10-23 11:57:33.888: DEBUG/Videokit(4830): run passing off to main()
    
10-23 11:57:33.904: DEBUG/Videokit(4830): main(): registering all modules
    
10-23 11:57:33.927: DEBUG/Videokit(4830): main(): registered everything
    
10-23 11:57:33.927: DEBUG/Videokit(4830): main(): initting opts
    
10-23 11:57:33.943: DEBUG/Videokit(4830): main(): initted opts.
    
10-23 11:57:33.943: ERROR/Videokit(4830): ffmpeg version N-30996-gf925b24, Copyright (c) 2000-2011 the FFmpeg developers
    
10-23 11:57:33.943: ERROR/Videokit(4830):   built on Oct 21 2011 13:54:03 with gcc 4.4.3
    
10-23 11:57:33.943: ERROR/Videokit(4830):   configuration: --enable-cross-compile --arch=arm5te --enable-armv5te --target-os=linux --disable-stripping --prefix=../output --disable-neon --enable-version3 --disable-shared --enable-static --enable-gpl --enable-memalign-hack --cc=arm-linux-androideabi-gcc --ld=arm-linux-androideabi-ld --extra-cflags='-fPIC -DANDROID -D__thumb__ -mthumb -Wfatal-errors -Wno-deprecated' --disable-everything --enable-decoder=mjpeg --enable-demuxer=mjpeg --enable-parser=mjpeg --enable-demuxer=image2 --enable-muxer=mp4 --enable-encoder=libx264 --enable-libx264 --enable-decoder=rawvideo --enable-protocol=file --enable-hwaccels --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-filter=buffer --enable-filter=buffersink --disable-demuxer=v4l --disable-demuxer=v4l2 --disable-indev=v4l --disable-indev=v4l2 --extra-cflags='-I../x264 -Ivideokit' --extra-ldflags=-L../x264
    
10-23 11:57:33.943: DEBUG/Videokit(4830): main(): parsing options
    
10-23 11:57:33.943: DEBUG/Videokit(4830): parse_options has 4 options to parse
    
10-23 11:57:33.951: ERROR/Videokit(4830): opt_input_file av_open_input_file /mnt/sdcard/fun/snap0000.jpg -2 
    
10-23 11:57:33.951: ERROR/Videokit(4830): /mnt/sdcard/fun/snap0000.jpg: No such file or directory
    
10-23 11:57:33.951: ERROR/Videokit(4830): ffmpeg_exit(1) called!

  • If I pass this code in Windows console it works, but when I emulate windows console in node.js code doesn't work, and returns unclear error

    22 décembre 2016, par Maxim Cherevatov

    I have code :

    cmd.get(
    
    'trimp3  ant.mp3 ant2.mp3 00:00 00:20',
    
    function(data){
    
        console.log('the node-cmd cloned dir contains these files :\n\n',data)
    
    }
    
);

    If pass this code in Windows console it works well !
    But, when i emulate windows console in node.js this code not work, and returns unclear mistake :

    [!!] ERROR:  "ffmpeg" �� ����� ����७��� ��� ���譥�
    
��������, �ᯮ��塞�� �ணࠬ��� ��� �������� 䠩���.

    To emulate the use node-cmd.

Navigation