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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
ANNEXE : Les plugins utilisés spécifiquement pour la ferme
5 mars 2010, parLe site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)
Sur d’autres sites (9038)
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Unable to find a suitable output format for ' -filter_complex' -filter_complex : Invalid argument for FFMPEG Terminal
18 août 2023, par heroZeroThis is what I am trying :


ffmpeg -i crop-1.mp4 -i crop-2.mp4 -i crop-2.mp4 -i crop-3.mp4 \ -filter_complex \ "[0:v][1:v]hstack=inputs=2[top] ;\ [2:v][3:v]hstack=inputs=2[bottom] ;[top][bottom]vstack=inputs=2[v]" \ -map "[v]" \ output.mp4


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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.
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Terminal : How to extract vobsub subtitles to bitmap images (jpg, png) ?
5 août 2022, par DevonDahonHow to extract image-based subtitles to bitmap images (jpg, png) ?


I tried with
ffmpeg, but it seems to work only with text-based subtitles.

$ ffmpeg -i myvideo.mp4 -map "0:2" output.bre.srt
ffmpeg version 5.0.1 Copyright (c) 2000-2022 the FFmpeg developers
 built with Apple clang version 13.1.6 (clang-1316.0.21.2.5)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/5.0.1_3 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
 libavutil 57. 17.100 / 57. 17.100
 libavcodec 59. 18.100 / 59. 18.100
 libavformat 59. 16.100 / 59. 16.100
 libavdevice 59. 4.100 / 59. 4.100
 libavfilter 8. 24.100 / 8. 24.100
 libswscale 6. 4.100 / 6. 4.100
 libswresample 4. 3.100 / 4. 3.100
 libpostproc 56. 3.100 / 56. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'myvideo.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 512
 compatible_brands: mp42iso2avc1mp41
 creation_time : 2022-08-03T21:58:07.000000Z
 encoder : HandBrake 1.5.1 2022011000
 Duration: 00:11:05.40, start: 0.000000, bitrate: 1635 kb/s
 Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m/bt470bg/bt470bg, progressive), 712x576 [SAR 16:15 DAR 178:135], 1454 kb/s, 25 fps, 25 tbr, 90k tbn (default)
 Metadata:
 creation_time : 2022-08-03T21:58:07.000000Z
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](bre): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 162 kb/s (default)
 Metadata:
 creation_time : 2022-08-03T21:58:07.000000Z
 handler_name : Stereo
 vendor_id : [0][0][0][0]
 Stream #0:2[0x3](bre): Subtitle: dvd_subtitle (mp4s / 0x7334706D), 720x576, 6 kb/s (default)
 Metadata:
 creation_time : 2022-08-03T21:58:07.000000Z
 handler_name : Brezhoneg
 Stream #0:3[0x4](fra): Subtitle: dvd_subtitle (mp4s / 0x7334706D), 720x576, 6 kb/s
 Metadata:
 creation_time : 2022-08-03T21:58:07.000000Z
 handler_name : Français
Error initializing output stream 0:0 -- Subtitle encoding currently only possible from text to text or bitmap to bitmap
Stream mapping:
 Stream #0:2 -> #0:0 (dvd_subtitle (dvdsub) -> subrip (srt))
 Last message repeated 1 times


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