Recherche avancée
Autres articles (112)
-
Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...)
Sur d’autres sites (10429)
-
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
-
ffmpeg MKV to MP4 format conversion issues
28 septembre 2019, par Lucas LecceI 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.mp4ffmpeg -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 ?
-
Having trouble compiling ffmpeg code in command terminal
10 septembre 2019, par m00ncakeI 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
libavformatfolder and it does havertpdec.hbut when I compile it in the command line, i get this error. (trying to include this header forRTSPStateandRTSPStreamas well asRTPDemuxContext)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(&format_ctx, "rtsp://admin:password@192.168.1.67:554",
NULL, NULL) != 0) {
return EXIT_FAILURE;
}
if (avformat_find_stream_info(format_ctx, NULL) < 0) {
return EXIT_FAILURE;
}
//search video stream
for (int i = 0; i < 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(&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) < 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, &packet) >= 0 && cnt < 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) & 0xffffffff) - 2208988800;
uint32_t fraction = (last_ntp_time & 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 << "Time is: " << *time << std::endl;
}
std::cout << "1 Frame: " << cnt << std::endl;
if (packet.stream_index == video_stream_index) { //packet is video
std::cout << "2 Is Video" << std::endl;
if (stream == NULL) { //create stream in file
std::cout << "3 create stream" << 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 << "4 decoding" << std::endl;
int result = avcodec_decode_video2(codec_ctx, picture, &check, &packet);
std::cout << "Bytes decoded " << result << " check " << check
<< std::endl;
if (cnt > 100) //cnt < 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 << "test" << cnt << ".ppm";
output_file.open(file_name.str().c_str());
output_file << "P3 " << codec_ctx->width << " " << codec_ctx->height
<< " 255\n";
for (int y = 0; y < codec_ctx->height; y++) {
for (int x = 0; x < codec_ctx->width * 3; x++)
output_file
<< (int) (picture_rgb->data[0]
+ y * picture_rgb->linesize[0])[x] << " ";
}
output_file.close();
}
cnt++;
}
av_free_packet(&packet);
av_init_packet(&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.
Syndiquer tout le site
