Recherche avancée

Médias (1)

Mot : - Tags -/biomaping

Autres articles (54)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • 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 (...)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

Sur d’autres sites (9836)

  • Having trouble compiling ffmpeg code in command terminal

    10 septembre 2019, par m00ncake

    I am having a bit of trouble compiling my c++ code in my terminal. I have ffmpeg installed as shown below.

    ffmpeg version n4.1 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
    
  configuration: --enable-gpl --enable-version3 --disable-static --enable-shared --enable-small --enable-avisynth --enable-chromaprint --enable-frei0r --enable-gmp --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-librtmp --enable-libshine --enable-libsmbclient --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtesseract --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libxml2 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-libmysofa --enable-openal --enable-opencl --enable-opengl --enable-libdrm
    
  libavutil      56. 22.100 / 56. 22.100
    
  libavcodec     58. 35.100 / 58. 35.100
    
  libavformat    58. 20.100 / 58. 20.100
    
  libavdevice    58.  5.100 / 58.  5.100
    
  libavfilter     7. 40.101 /  7. 40.101
    
  libswscale      5.  3.100 /  5.  3.100
    
  libswresample   3.  3.100 /  3.  3.100
    
  libpostproc    55.  3.100 / 55.  3.100
    
Hyper fast Audio and Video encoder
    
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

    However, when I compile my c++ code, currently trying to get NTP timestamps from private data in ffmpeg but I need to include their headers ? I have looked into ffmpeg’s libavformat folder and it does have rtpdec.h but when I compile it in the command line, i get this error. (trying to include this header for RTSPState and RTSPStream as well as RTPDemuxContext)

    cf.cpp:11:10: fatal error: libavformat/rtsp.h: No such file or directory
    
 #include <libavformat></libavformat>rtpdec.h>
    
          ^~~~~~~~~~~~~~~~~~~~
    
compilation terminated.

    This is my code :

    #include 
    
#include 
    
#include <iostream>
    
#include <fstream>
    
#include <sstream>
    

    
extern "C" {
    
#include <libavcodec></libavcodec>avcodec.h>
    
#include <libavformat></libavformat>avformat.h>
    
#include <libavformat></libavformat>avio.h>
    
#include <libavformat></libavformat>rtpdec.h>
    
#include <libswscale></libswscale>swscale.h>
    
}
    

    
int main(int argc, char** argv) {
    

    
    // Open the initial context variables that are needed
    
    SwsContext *img_convert_ctx;
    
    AVFormatContext* format_ctx = avformat_alloc_context();
    
    AVCodecContext* codec_ctx = NULL;
    
    int video_stream_index;
    
    uint32_t* last_rtcp_ts;
    
    double* base_time;
    
    double* time;
    

    
    // Register everything
    
    av_register_all();
    
    avformat_network_init();
    

    
    //open RTSP
    
    if (avformat_open_input(&amp;format_ctx, "rtsp://admin:password@192.168.1.67:554",
    
            NULL, NULL) != 0) {
    
        return EXIT_FAILURE;
    
    }
    

    
    if (avformat_find_stream_info(format_ctx, NULL) &lt; 0) {
    
        return EXIT_FAILURE;
    
    }
    

    
    //search video stream
    
    for (int i = 0; i &lt; format_ctx->nb_streams; i++) {
    
        if (format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO)
    
            video_stream_index = i;
    
    }
    

    
    AVPacket packet;
    
    av_init_packet(&amp;packet);
    

    
    //open output file
    
    AVFormatContext* output_ctx = avformat_alloc_context();
    

    
    AVStream* stream = NULL;
    
    int cnt = 0;
    

    
    //start reading packets from stream and write them to file
    
    av_read_play(format_ctx);    //play RTSP
    

    
    // Get the codec
    
    AVCodec *codec = NULL;
    
    codec = avcodec_find_decoder(AV_CODEC_ID_H264);
    
    if (!codec) {
    
        exit(1);
    
    }
    

    
// Add this to allocate the context by codec
    
codec_ctx = avcodec_alloc_context3(codec);
    

    
avcodec_get_context_defaults3(codec_ctx, codec);
    
avcodec_copy_context(codec_ctx, format_ctx->streams[video_stream_index]->codec);
    
std::ofstream output_file;
    

    
if (avcodec_open2(codec_ctx, codec, NULL) &lt; 0)
    
    exit(1);
    

    
    img_convert_ctx = sws_getContext(codec_ctx->width, codec_ctx->height,
    
            codec_ctx->pix_fmt, codec_ctx->width, codec_ctx->height, AV_PIX_FMT_RGB24,
    
            SWS_BICUBIC, NULL, NULL, NULL);
    

    
    int size = avpicture_get_size(AV_PIX_FMT_YUV420P, codec_ctx->width,
    
            codec_ctx->height);
    
    uint8_t* picture_buffer = (uint8_t*) (av_malloc(size));
    
    AVFrame* picture = av_frame_alloc();
    
    AVFrame* picture_rgb = av_frame_alloc();
    
    int size2 = avpicture_get_size(AV_PIX_FMT_RGB24, codec_ctx->width,
    
            codec_ctx->height);
    
    uint8_t* picture_buffer_2 = (uint8_t*) (av_malloc(size2));
    
    avpicture_fill((AVPicture *) picture, picture_buffer, AV_PIX_FMT_YUV420P,
    
            codec_ctx->width, codec_ctx->height);
    
    avpicture_fill((AVPicture *) picture_rgb, picture_buffer_2, AV_PIX_FMT_RGB24,
    
            codec_ctx->width, codec_ctx->height);
    

    
    while (av_read_frame(format_ctx, &amp;packet) >= 0 &amp;&amp; cnt &lt; 1000) { //read ~ 1000 frames
    

    
        RTSPState* rt = format_ctx->priv_data;
    
        RTSPStream *rtsp_stream = rt->rtsp_streams[0];
    
        RTPDemuxContext* rtp_demux_context = rtsp_stream->transport_priv;
    
        uint32_t new_rtcp_ts = rtp_demux_context->last_rtcp_timestamp;
    
        uint64_t last_ntp_time = 0;
    

    
        if (new_rtcp_ts != *last_rtcp_ts) {
    
            *last_rtcp_ts = new_rtcp_ts;
    
            last_ntp_time = rtp_demux_context->last_rtcp_ntp_time;
    
            uint32_t seconds = ((last_ntp_time >> 32) &amp; 0xffffffff) - 2208988800;
    
            uint32_t fraction  = (last_ntp_time &amp; 0xffffffff);
    
            double useconds = ((double) fraction / 0xffffffff);
    
            *base_time = seconds + useconds;
    
            uint32_t d_ts = rtp_demux_context->timestamp - *last_rtcp_ts;
    
            *time = *base_time + d_ts / 90000.0;
    
            std::cout &lt;&lt; "Time is: " &lt;&lt; *time &lt;&lt; std::endl;
    
        }
    

    
        std::cout &lt;&lt; "1 Frame: " &lt;&lt; cnt &lt;&lt; std::endl;
    
        if (packet.stream_index == video_stream_index) {    //packet is video
    
            std::cout &lt;&lt; "2 Is Video" &lt;&lt; std::endl;
    
            if (stream == NULL) {    //create stream in file
    
                std::cout &lt;&lt; "3 create stream" &lt;&lt; std::endl;
    
                stream = avformat_new_stream(output_ctx,
    
                        format_ctx->streams[video_stream_index]->codec->codec);
    
                avcodec_copy_context(stream->codec,
    
                        format_ctx->streams[video_stream_index]->codec);
    
                stream->sample_aspect_ratio =
    
                        format_ctx->streams[video_stream_index]->codec->sample_aspect_ratio;
    
            }
    
            int check = 0;
    
            packet.stream_index = stream->id;
    
            std::cout &lt;&lt; "4 decoding" &lt;&lt; std::endl;
    
            int result = avcodec_decode_video2(codec_ctx, picture, &amp;check, &amp;packet);
    
            std::cout &lt;&lt; "Bytes decoded " &lt;&lt; result &lt;&lt; " check " &lt;&lt; check
    
                    &lt;&lt; std::endl;
    
            if (cnt > 100)    //cnt &lt; 0)
    
                    {
    
                sws_scale(img_convert_ctx, picture->data, picture->linesize, 0,
    
                        codec_ctx->height, picture_rgb->data, picture_rgb->linesize);
    
                std::stringstream file_name;
    
                file_name &lt;&lt; "test" &lt;&lt; cnt &lt;&lt; ".ppm";
    
                output_file.open(file_name.str().c_str());
    
                output_file &lt;&lt; "P3 " &lt;&lt; codec_ctx->width &lt;&lt; " " &lt;&lt; codec_ctx->height
    
                        &lt;&lt; " 255\n";
    
                for (int y = 0; y &lt; codec_ctx->height; y++) {
    
                    for (int x = 0; x &lt; codec_ctx->width * 3; x++)
    
                        output_file
    
                                &lt;&lt; (int) (picture_rgb->data[0]
    
                                        + y * picture_rgb->linesize[0])[x] &lt;&lt; " ";
    
                }
    
                output_file.close();
    
            }
    
            cnt++;
    
        }
    
        av_free_packet(&amp;packet);
    
        av_init_packet(&amp;packet);
    
    }
    
    av_free(picture);
    
    av_free(picture_rgb);
    
    av_free(picture_buffer);
    
    av_free(picture_buffer_2);
    

    
    av_read_pause(format_ctx);
    
    avio_close(output_ctx->pb);
    
    avformat_free_context(output_ctx);
    

    
    return (EXIT_SUCCESS);
    
}
    
</sstream></fstream></iostream>

    The command i use to compile my code : g++ -w cf.cpp -o cf $(pkg-config --cflags --libs libavformat libswscale libavcodec)

    I am a bit new to coding in FFmpeg.

  • ffmpeg MKV to MP4 format conversion issues

    28 septembre 2019, par Lucas Lecce

    I converted a 3Gb MKV video file to MP4 format using the following ffmpeg command :

    ffmpeg -i input.mkv -c: v libx264 -crf 23 -c: a aac -movflags faststart output.mp4
    ffmpeg -i input.mkv -acodec copy -vcodec copy output.mp4
    
ffmpeg version N-95111-g87ddf9f1ef Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 9.2.1 (GCC) 20190918
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
    
  libavutil      56. 35.100 / 56. 35.100
    
  libavcodec     58. 59.100 / 58. 59.100
    
  libavformat    58. 33.100 / 58. 33.100
    
  libavdevice    58.  9.100 / 58.  9.100
    
  libavfilter     7. 59.100 /  7. 59.100
    
  libswscale      5.  6.100 /  5.  6.100
    
  libswresample   3.  6.100 /  3.  6.100
    
  libpostproc    55.  6.100 / 55.  6.100
    
Input #0, matroska,webm, from 'input.mkv':
    
  Metadata:
    
    title           : claucha75
    
    encoder         : libebml v1.3.5 + libmatroska v1.4.8
    
    creation_time   : 2018-01-23T22:07:33.000000Z
    
  Duration: 01:37:13.89, start: 0.000000, bitrate: 5044 kb/s
    
    Stream #0:0: Video: h264 (High), yuv420p(tv, bt709, progressive), 1920x1080, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    
    Metadata:
    
      title           : claucha75
    
      BPS             : 4146894
    
      BPS-eng         : 4146894
    
      DURATION        : 01:37:12.952000000
    
      DURATION-eng    : 01:37:12.952000000
    
      NUMBER_OF_FRAMES: 139851
    
      NUMBER_OF_FRAMES-eng: 139851
    
      NUMBER_OF_BYTES : 3023579528
    
      NUMBER_OF_BYTES-eng: 3023579528
    
      _STATISTICS_WRITING_APP: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_DATE_UTC: 2018-01-23 22:07:33
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2018-01-23 22:07:33
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
    Stream #0:1(spa): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s (default)
    
    Metadata:
    
      title           : Latino
    
      BPS             : 448000
    
      BPS-eng         : 448000
    
      DURATION        : 01:37:13.888000000
    
      DURATION-eng    : 01:37:13.888000000
    
      NUMBER_OF_FRAMES: 182309
    
      NUMBER_OF_FRAMES-eng: 182309
    
      NUMBER_OF_BYTES : 326697728
    
      NUMBER_OF_BYTES-eng: 326697728
    
      _STATISTICS_WRITING_APP: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_DATE_UTC: 2018-01-23 22:07:33
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2018-01-23 22:07:33
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
    Stream #0:2(eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
    
    Metadata:
    
      title           : Ingles
    
      BPS             : 448000
    
      BPS-eng         : 448000
    
      DURATION        : 01:37:13.856000000
    
      DURATION-eng    : 01:37:13.856000000
    
      NUMBER_OF_FRAMES: 182308
    
      NUMBER_OF_FRAMES-eng: 182308
    
      NUMBER_OF_BYTES : 326695936
    
      NUMBER_OF_BYTES-eng: 326695936
    
      _STATISTICS_WRITING_APP: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_DATE_UTC: 2018-01-23 22:07:33
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2018-01-23 22:07:33
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
    Stream #0:3(spa): Subtitle: subrip
    
    Metadata:
    
      title           : Sub. Latino
    
      BPS             : 58
    
      BPS-eng         : 58
    
      DURATION        : 01:27:56.723000000
    
      DURATION-eng    : 01:27:56.723000000
    
      NUMBER_OF_FRAMES: 1048
    
      NUMBER_OF_FRAMES-eng: 1048
    
      NUMBER_OF_BYTES : 38641
    
      NUMBER_OF_BYTES-eng: 38641
    
      _STATISTICS_WRITING_APP: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_DATE_UTC: 2018-01-23 22:07:33
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2018-01-23 22:07:33
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
    Stream #0:4(eng): Subtitle: subrip
    
    Metadata:
    
      title           : Sub. Ingles
    
      BPS             : 72
    
      BPS-eng         : 72
    
      DURATION        : 01:32:29.880000000
    
      DURATION-eng    : 01:32:29.880000000
    
      NUMBER_OF_FRAMES: 1820
    
      NUMBER_OF_FRAMES-eng: 1820
    
      NUMBER_OF_BYTES : 50243
    
      NUMBER_OF_BYTES-eng: 50243
    
      _STATISTICS_WRITING_APP: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_DATE_UTC: 2018-01-23 22:07:33
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2018-01-23 22:07:33
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
File 'output.mp4' already exists. Overwrite ? [y/N] y
    
[mp4 @ 000002935ee0ff00] track 1: codec frame size is not set
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    title           : claucha75
    
    encoder         : Lavf58.33.100
    
    Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 23.98 tbr, 16k tbn, 1k tbc (default)
    
    Metadata:
    
      title           : claucha75
    
      BPS             : 4146894
    
      BPS-eng         : 4146894
    
      DURATION        : 01:37:12.952000000
    
      DURATION-eng    : 01:37:12.952000000
    
      NUMBER_OF_FRAMES: 139851
    
      NUMBER_OF_FRAMES-eng: 139851
    
      NUMBER_OF_BYTES : 3023579528
    
      NUMBER_OF_BYTES-eng: 3023579528
    
      _STATISTICS_WRITING_APP: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_DATE_UTC: 2018-01-23 22:07:33
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2018-01-23 22:07:33
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
    Stream #0:1(spa): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 448 kb/s (default)
    
    Metadata:
    
      title           : Latino
    
      BPS             : 448000
    
      BPS-eng         : 448000
    
      DURATION        : 01:37:13.888000000
    
      DURATION-eng    : 01:37:13.888000000
    
      NUMBER_OF_FRAMES: 182309
    
      NUMBER_OF_FRAMES-eng: 182309
    
      NUMBER_OF_BYTES : 326697728
    
      NUMBER_OF_BYTES-eng: 326697728
    
      _STATISTICS_WRITING_APP: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v20.0.0 ('I Am The Sun') 64-bit
    
      _STATISTICS_WRITING_DATE_UTC: 2018-01-23 22:07:33
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2018-01-23 22:07:33
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
frame=139851 fps=2149 q=-1.0 Lsize= 3275868kB time=01:37:13.85 bitrate=4600.0kbits/s speed=89.7x
    
video:2952714kB audio:319041kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.125715%

    The command produces a MP4 file. The file takes a long time to open and then it takes several more minutes for a frame to appear. The converted file is also missing audio.

    Does anyone have an idea about the slow loading time and missing audio ?

  • Evolution #4396 (Nouveau) : utiliser SPIP avec MySQL 8.0

    25 octobre 2019, par Nicolas Krebs -

    La branche 8.0 de MySQL est sortie en 2018. À mon avis, il serait bon que SPIP puisse fonctionner avec, et que la compatibilité soit indiquée dans https://www.spip.net/fr_article4351.html .

    Changelog : https://dev.mysql.com/doc/refman/8.0/en/mysql-nutshell.html

Navigation