Recherche avancée
Autres articles (111)
-
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 -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...) -
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 (10433)
-
mpegvideo : Expand macro
10 juin 2015, par Vittorio Giovarampegvideo : Expand macro
Having this macro in an header only facilitates the use of such header.
The code increase is minimal and files have one less dependency
on mpegvideo.h. -
avformat/mpegts : parse sections with multiple tables
9 mai 2018, par Aman Guptaavformat/mpegts : parse sections with multiple tables
Fixes PMT parsing in some mpegts streams which contain
multiple tables within the PMT pid. Previously, the parser
assumed only one table was present in each packet, and discarded
the rest of the section data after attempting to parse the first
table.A similar issue was documented in the BeyondTV software[1], which
helped me diagnose the same bug in the ffmpeg mpegts demuxer. I also
tried DVBInspector, libdvbpsi's dvbinfo, and tstools' tsinfo to
help debug. The former two properly read PMTs with multiple tables,
whereas the last has the same bug as ffmpeg.I've created a minimal sample[2] which contains the combined PMT.
Here's what ffmpeg probe shows before and after this patch :Before :
Input #0, mpegts, from 'combined-pmt-tids.ts' :
Duration : 00:00:01.08, start : 4932.966167, bitrate : 741 kb/s
Program 1
No Program
Stream #0:0[0xf9d] : Audio : ac3, 48000 Hz, mono, fltp, 96 kb/s
Stream #0:1[0xf9b] : Audio : mp3, 0 channels, fltp
Stream #0:2[0xf9c] : Unknown : noneAfter :
Input #0, mpegts, from 'combined-pmt-tids.ts' :
Duration : 00:00:01.11, start : 4932.966167, bitrate : 718 kb/s
Program 1
Stream #0:0[0xf9b] : Video : mpeg2video ([2][0][0][0] / 0x0002), none(tv, top first), 29.97 fps, 29.97 tbr, 90k tbn, 90k tbc
Stream #0:1[0xf9c](eng) : Audio : ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s
Stream #0:2[0xf9d](spa) : Audio : ac3 (AC-3 / 0x332D4341), 48000 Hz, mono, fltp, 96 kb/sWith the patch, the PMT is parsed correctly so the streams are
created in the correct order, are associated with "Program 1",
and their codecs are set correctly.[1] http://forums.snapstream.com/vb/showpost.php?p=343816&postcount=201
[2] https://s3.amazonaws.com/tmm1/combined-pmt-tids.tsSigned-off-by : Aman Gupta <aman@tmm1.net>
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc> -
ffmpeg avformat_open_input() function causes memory leak when receiving live stream
12 septembre 2023, par george_dI have live streams (can be UDP or HLS, video codec is H264), from which I grab frames for further processing.


For this purpose, I use ffmpeg + nvjpeg + cuda libraries.


However I noticed memory leak - memory usage periodically (every 10-20 seconds) is increased by 100-400 KB, the amount and period may vary.


After disabling pieces of code one by one, I realized that it is
avformat_open_input()which causes memory leak.

No matter which buffer settings (https://ffmpeg.org/ffmpeg-protocols.html#udp) I choose for UDP, the leak still persists. Same goes for HLS streams.


I tried to find anything related to this problem, but all the sources I found claimed that this problem took place in the past and has been fixed.


Is there some mysterious setting I am missing, so that memory could be freed properly ?


Or is this memory supposed to be freed when processing frames (i.e. using
av_read_frame()andav_packet_unref(), etc) ?

Minimal example of code to reproduce the problem :


avformat_example.cpp


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

int main(int argc, char *argv[]){
 if (argc < 2) {
 return 1;
 }

 char* inputSource = argv[1];
 AVFormatContext *ctx = NULL;

 if (avformat_open_input(&ctx, inputSource, NULL, NULL) != 0) {
 av_log(NULL,
 AV_LOG_ERROR,
 "Cannot open '%s'",
 inputSource);
 return 1;
 }

 /*
 This loop is placed here to demonstrate
 avformat_open_input() causing leak.
 Actually, instead of noop loop there is logic of getting and processing frames,
 but it doesn't matter now.
 As loop goes on, the amount of leaked memory increases.
 */
 while(true) {
 sleep(1);
 }

 return 0;
}


Compile with :


g++ avformat_example.cpp -lavcodec -lavutil -lavformat -I/usr/include/ffmpeg-cuda -o avformat_open_input_example


Run :


./avformat_open_input_example "udp://127.0.0.1:5000?reuse=1&pkt_size=1316&buffer_size=1310720&fifo_size=40000"


Version of ffmpeg underlying libraries :


libavutil 58. 7.100 / 58. 7.100
libavcodec 60. 11.100 / 60. 11.100
libavformat 60. 5.100 / 60. 5.100
libavdevice 60. 2.100 / 60. 2.100
libavfilter 9. 8.100 / 9. 8.100
libswscale 7. 2.100 / 7. 2.100
libswresample 4. 11.100 / 4. 11.100


Syndiquer tout le site
