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  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 est la première version de MediaSPIP stable.
    Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

Sur d’autres sites (8584)

  • Convert mkv to mp4 on ubuntu 18.10 error ?

    15 janvier 2019, par ScipioAfricanus

    I am trying to convert some mkvs to mp4s on Ubuntu 18.10 with ffmpeg, and I keep getting the error below. Aby thoughts ?

    I am following https://linuxconfig.org/install-ffmpeg-on-ubuntu-18-04-bionic-beaver-linux#h2-operating-system-and-software-versions

    I have installed ffmpeg and installed :

    sudo apt install -y libopus-dev libmp3lame-dev libfdk-aac-dev libvpx-dev libx264-dev yasm libass-dev libtheora-dev libvorbis-dev mercurial cmake

    Command I ran with output :

    ffmpeg -i 'video.mkv' -codec copy 'video.mp4' -strict -2 -y
    
ffmpeg version 4.0.2-2 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 8 (Ubuntu 8.2.0-7ubuntu1)
    
  configuration: --prefix=/usr --extra-version=2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
  libpostproc    55.  1.100 / 55.  1.100
    
Trailing options were found on the commandline.
    
Input #0, matroska,webm, from 'ALL nyannyancosplay tik toks (Chronological order) (HD-720p)-WxewnMF4j6Y.mkv':
    
  Metadata:
    
    COMPATIBLE_BRANDS: iso6avc1mp41
    
    MAJOR_BRAND     : dash
    
    MINOR_VERSION   : 0
    
    ENCODER         : Lavf58.12.100
    
  Duration: 00:27:39.74, start: -0.007000, bitrate: 834 kb/s
    
    Stream #0:0: Video: h264 (Main), yuv420p(progressive), 790x720 [SAR 1:1 DAR 79:72], 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
    
    Metadata:
    
      HANDLER_NAME    : ISO Media file produced by Google Inc. Created on: 01/13/2019.
    
      DURATION        : 00:27:39.724000000
    
    Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
    
    Metadata:
    
      DURATION        : 00:27:39.741000000
    
[mp4 @ 0x560e85326100] track 1: codec frame size is not set
    
[mp4 @ 0x560e85326100] opus in MP4 support is experimental, add '-strict -2' if you want to use it.
    
Could not write header for output file #0 (incorrect codec parameters ?): Experimental feature
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
    Last message repeated 1 times

    I also tried adding -strict -2 to no avail.

  • ffmpeg - Convert mkv to mp4 on ubuntu 18.10 error ?

    28 mars 2020, par ScipioAfricanus

    I am trying to convert some mkvs to mp4s on Ubuntu 18.10 with ffmpeg, and I keep getting the error below. Aby thoughts ?

    I am following https://linuxconfig.org/install-ffmpeg-on-ubuntu-18-04-bionic-beaver-linux#h2-operating-system-and-software-versions

    I have installed ffmpeg and installed :

    sudo apt install -y libopus-dev libmp3lame-dev libfdk-aac-dev libvpx-dev libx264-dev yasm libass-dev libtheora-dev libvorbis-dev mercurial cmake

    Command I ran with output :

    ffmpeg -i 'video.mkv' -codec copy 'video.mp4' -strict -2 -y
    
ffmpeg version 4.0.2-2 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 8 (Ubuntu 8.2.0-7ubuntu1)
    
  configuration: --prefix=/usr --extra-version=2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
  libpostproc    55.  1.100 / 55.  1.100
    
Trailing options were found on the commandline.
    
Input #0, matroska,webm, from 'ALL nyannyancosplay tik toks (Chronological order) (HD-720p)-WxewnMF4j6Y.mkv':
    
  Metadata:
    
    COMPATIBLE_BRANDS: iso6avc1mp41
    
    MAJOR_BRAND     : dash
    
    MINOR_VERSION   : 0
    
    ENCODER         : Lavf58.12.100
    
  Duration: 00:27:39.74, start: -0.007000, bitrate: 834 kb/s
    
    Stream #0:0: Video: h264 (Main), yuv420p(progressive), 790x720 [SAR 1:1 DAR 79:72], 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
    
    Metadata:
    
      HANDLER_NAME    : ISO Media file produced by Google Inc. Created on: 01/13/2019.
    
      DURATION        : 00:27:39.724000000
    
    Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
    
    Metadata:
    
      DURATION        : 00:27:39.741000000
    
[mp4 @ 0x560e85326100] track 1: codec frame size is not set
    
[mp4 @ 0x560e85326100] opus in MP4 support is experimental, add '-strict -2' if you want to use it.
    
Could not write header for output file #0 (incorrect codec parameters ?): Experimental feature
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
    Last message repeated 1 times

    I also tried adding -strict -2 to no avail.

  • ffmpeg avcodec_send_packet/avcodec_receive_frame memory leak

    23 janvier 2019, par G Hamlin

    I’m attempting to decode frames, but memory usage grows with every frame (more specifically, with every call to avcodec_send_packet) until finally the code crashes with a bad_alloc. Here’s the basic decode loop :

    int rfret = 0;
    
while((rfret = av_read_frame(inctx.get(), &packet)) >= 0){
    
    if (packet.stream_index == vstrm_idx) {
    

    
        //std::cout << "Sending Packet" << std::endl;
    
        int ret = avcodec_send_packet(ctx.get(), &packet);
    
        if (ret < 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
    
            std::cout << "avcodec_send_packet: " << ret << std::endl;
    
            break;
    
        }
    

    
        while (ret  >= 0) {
    
            //std::cout << "Receiving Frame" << std::endl;
    
            ret = avcodec_receive_frame(ctx.get(), fr);
    
            if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
    
                //std::cout << "avcodec_receive_frame: " << ret << std::endl;
    
                av_frame_unref(fr);
    
                // av_frame_free(&fr);
    
                break;
    
            }
    

    
            std::cout << "frame: " << ctx->frame_number << std::endl;
    

    
            // eventually do something with the frame here...
    

    
            av_frame_unref(fr);
    
            // av_frame_free(&fr);
    
        }
    
    }
    
    else {
    
        //std::cout << "Not Video" << std::endl;
    
    }
    
    av_packet_unref(&packet);
    
}

    Memory usage/leakage seems to scale with the resolution of the video I’m decoding. For example, for a 3840x2160 resolution video, the memory usage in windows task manager consistently jumps up by about 8mb (1 byte per pixel ??) for each received frame. Do I need to do something besides call av_frame_unref to release the memory ?

    (more) complete code below

    void AVFormatContextDeleter(AVFormatContext* ptr)
    
{
    
    if (ptr) {
    
        avformat_close_input(&ptr);
    
    }
    
}
    

    
void AVCodecContextDeleter(AVCodecContext* ptr)
    
{
    
    if (ptr) {
    
        avcodec_free_context(&ptr);
    
    }
    
}
    

    
typedef std::unique_ptr AVFormatContextPtr;
    
typedef std::unique_ptr AVCodecContextPtr;
    

    
AVCodecContextPtr createAvCodecContext(AVCodec *vcodec)
    
{
    
    AVCodecContextPtr ctx(avcodec_alloc_context3(vcodec), AVCodecContextDeleter);
    
    return ctx;
    
}
    

    
AVFormatContextPtr createFormatContext(const std::string& filename)
    
{
    
    AVFormatContext* inctxPtr = nullptr;
    
    int ret = avformat_open_input(&inctxPtr, filename.c_str(), nullptr, nullptr);
    
    //    int ret = avformat_open_input(&inctx, "D:/Videos/test.mp4", nullptr, nullptr);
    
    if (ret != 0) {
    
        inctxPtr = nullptr;
    
    }
    

    
    return AVFormatContextPtr(inctxPtr, AVFormatContextDeleter);
    
}
    

    
int testDecode()
    
{
    
    // open input file context
    
    AVFormatContextPtr inctx = createFormatContext("D:/Videos/Matt Chapman Hi Greg.MOV");
    

    
    if (!inctx) {
    
        // std::cerr << "fail to avforamt_open_input(\"" << infile << "\"): ret=" << ret;
    
        return 1;
    
    }
    

    
    // retrieve input stream information
    
    int ret = avformat_find_stream_info(inctx.get(), nullptr);
    
    if (ret < 0) {
    
        //std::cerr << "fail to avformat_find_stream_info: ret=" << ret;
    
        return 2;
    
    }
    

    
    // find primary video stream
    
    AVCodec* vcodec = nullptr;
    
    const int vstrm_idx = av_find_best_stream(inctx.get(), AVMEDIA_TYPE_VIDEO, -1, -1, &vcodec, 0);
    
    if (vstrm_idx < 0) {
    
        //std::cerr << "fail to av_find_best_stream: vstrm_idx=" << vstrm_idx;
    
        return 3;
    
    }
    

    
    AVCodecParameters* origin_par = inctx->streams[vstrm_idx]->codecpar;
    
    if (vcodec == nullptr) {  // is this even necessary?
    
        vcodec = avcodec_find_decoder(origin_par->codec_id);
    
        if (!vcodec) {
    
            // Can't find decoder
    
            return 4;
    
        }
    
    }
    

    
    AVCodecContextPtr ctx = createAvCodecContext(vcodec);
    
    if (!ctx) {
    
        return 5;
    
    }
    

    
    ret = avcodec_parameters_to_context(ctx.get(), origin_par);
    
    if (ret) {
    
        return 6;
    
    }
    

    
    ret = avcodec_open2(ctx.get(), vcodec, nullptr);
    
    if (ret < 0) {
    
        return 7;
    
    }
    

    
    //print input video stream informataion
    
    std::cout
    
            //<< "infile: " << infile << "\n"
    
            << "format: " << inctx->iformat->name << "\n"
    
            << "vcodec: " << vcodec->name << "\n"
    
            << "size:   " << origin_par->width << 'x' << origin_par->height << "\n"
    
            << "fps:    " << av_q2d(ctx->framerate) << " [fps]\n"
    
            << "length: " << av_rescale_q(inctx->duration, ctx->time_base, {1,1000}) / 1000. << " [sec]\n"
    
            << "pixfmt: " << av_get_pix_fmt_name(ctx->pix_fmt) << "\n"
    
            << "frame:  " << inctx->streams[vstrm_idx]->nb_frames << "\n"
    
            << std::flush;
    

    

    
    AVPacket packet;
    

    
    av_init_packet(&packet);
    
    packet.data = nullptr;
    
    packet.size = 0;
    

    
    AVFrame *fr = av_frame_alloc();
    
    if (!fr) {
    
        return 8;
    
    }
    

    
    int rfret = 0;
    
    while((rfret = av_read_frame(inctx.get(), &packet)) >= 0){
    
        if (packet.stream_index == vstrm_idx) {
    

    
            //std::cout << "Sending Packet" << std::endl;
    
            int ret = avcodec_send_packet(ctx.get(), &packet);
    
            if (ret < 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
    
                std::cout << "avcodec_send_packet: " << ret << std::endl;
    
                break;
    
            }
    

    
            while (ret  >= 0) {
    
                //std::cout << "Receiving Frame" << std::endl;
    
                ret = avcodec_receive_frame(ctx.get(), fr);
    
                if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
    
                    //std::cout << "avcodec_receive_frame: " << ret << std::endl;
    
                    av_frame_unref(fr);
    
                    // av_frame_free(&fr);
    
                    break;
    
                }
    

    
                std::cout << "frame: " << ctx->frame_number << std::endl;
    

    
                // do something with the frame here...
    

    
                av_frame_unref(fr);
    
                // av_frame_free(&fr);
    
            }
    
        }
    
        else {
    
            //std::cout << "Not Video" << std::endl;
    
        }
    
        av_packet_unref(&packet);
    
    }
    

    
    std::cout << "RFRET = " << rfret << std::endl;
    

    
    return 0;
    
}

    Update 1 : (1/21/2019) Compiling on a different machine and running with different video files I am not seeing the memory usage growing without bound. I’ll try to narrow down where the difference lies (compiler ?, ffmpeg version ?, or video encoding ?)

    Update 2 : (1/21/2019) Ok, it looks like there is some interaction occurring between ffmpeg and Qt’s QCamera. In my application, I’m using Qt to manage the webcam, but decided to use ffmpeg libraries to handle decoding/encoding since Qt doesn’t have as comprehensive support for different codecs. If I have the camera turned on (through Qt), ffmpeg decoding memory consumption grows without bound. If the camera is off, ffmpeg behaves fine. I’ve tried this both with a physical camera (Logitech C920) and with a virtual camera using OBS-Virtualcam, with the same result. So far I’m baffled as to how the two systems are interacting...

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