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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
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Publier sur MédiaSpip
13 juin 2013Puis-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 -
Organiser par catégorie
17 mai 2013, parDans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...) -
Demande de création d’un canal
12 mars 2010, parEn fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...)
Sur d’autres sites (5899)
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Open .avi with OpenCV 2.4 & Ubuntu 11.04
25 juin 2012, par CTZStefI try to open and read video files in .avi format using OpenCV. Here is my code :
void MainWindow::on_actionOuvrir_fichier_triggered()
140 + {
141 + //mettre a -1 streamId
142 + streamId = -1;
143 + //ouvrir fenetre navigation fichiers pour recuperer path vers .avi
144 + QString fileName = QFileDialog::getOpenFileName(this,tr("Ouvrir fichier video"),"/home",
145 + tr("Videos (*.avi)"));
146 + std::string utf8_text = fileName.toUtf8().constData();
147 + //ouvrir .avi
148 + capture = new VideoCapture(utf8_text);
149 + //check ouverture
150 + if(!capture->isOpened())
151 + cout << "probleme ouverture fichier video" << endl;
152 + //calculer delay between each frame in ms
153 + rate = capture->get(CV_CAP_PROP_FPS);
154 + delay = 1000 / rate;
155 + //demarrer timer recordId
156 + recordId = startTimer(delay);
157 + //capture premiere frame
158 + if(!capture->read(in))
159 + cout << "probleme lecture frame fichier video" << endl;
160 + }I get no problem at compilation time, but I can't open a video file. While in debug mode I saw that string utf8_text had the good absolute path to my video, so obviously the problem comes from the constructor of the VideoCapture object. Then, I tried to install every codec pack I could or thought was relevant. But the problem is still there, capture->isOpened() still returns false, and in debug mode I can see that capture contains nothing.
I am lost here, don't know what to try next. Any idea ??
Thanks !!!
[EDIT]
Just in case, here is the output of ffmpeg -i myFile.avifaraday@faraday-Compaq-Evo-D510-e-pc:~/QtProjects/visionDev$ ffmpeg -i 1.avi
FFmpeg version 0.6.6-4:0.6.6-0ubuntu0.11.04.1, Copyright (c) 2000-2010 the Libav developers
built on Jun 12 2012 16:28:21 with gcc 4.5.2
configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
WARNING: library configuration mismatch
libavutil configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
libavcodec configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
libavformat configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
libavdevice configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
libavfilter configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
libswscale configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
libpostproc configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.19. 0 / 1.19. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0
Input #0, avi, from '1.avi':
Duration: 00:02:35.39, start: 0.000000, bitrate: 110595 kb/s
Stream #0.0: Video: rawvideo, bgr24, 640x480, 15 tbr, 15 tbn, 15 tbc
At least one output file must be specifiedI do not see anything wrong here, but I thought maybe someone will.
I really need this to work soon, and right now it's a dead end...
thanks
[EDIT 2]
I have just read this in the book OpenCV 2 Computer Vision Application Programming Cookbook by R. Laganiere :
It is important to note that in order to open the specified video
file, your computer must have the corresponding codec installed,
otherwise cv::VideoCapture will not be able to understand the input
file. Normally, if you are able to open your video file with a video
player on your machine (such as the Windows Media Player), then OpenCV
should also be able to read this file.Well, on my machine it is not that easy mister Laganiere... I hate this book.
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How can I add audio (mp3) to a flv (just video) with ffmpeg ?
18 juillet 2012, par domiHow can I add sound from a mp3-file to a flv file that has no audio ?
(With ffmpeg)When I use
ffmpeg -i video.flv -i audio.mp3 -acodec copy -vcodec copy -ab 128k -ar 44100 output.flv
I get this output :
FFmpeg version SVN-r12758, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration : —enable-shared —prefix=/usr libavutil version : 49.6.0 libavcodec version : 51.54.0 libavformat version : 52.13.0 libavdevice version : 52.0.0 built on Apr 7 2008 09:00:42, gcc : 4.1.2 20070626 (Red Hat 4.1.2-14) [flv @ 0x2b72415e00c0]Could not find codec parameters (Audio : 0x0000) Input #0, flv, from 'video.flv' : Duration : 00:00:03.2, start : 0.000000, bitrate : N/A Stream #0.0 : Video : flv, yuv420p, 468x312, 1000.00 tb(r) Stream #0.1 : Audio : 0x0000 mdb:511, lastbuf:0 skipping granule 0 mdb:511, lastbuf:0 skipping granule 0 mdb:511, lastbuf:0 skipping granule 1 mdb:511, lastbuf:0 skipping granule 1 Input #1, mp3, from 'audio.mp3' : Duration : 00:01:00.9, start : 0.000000, bitrate : 128 kb/s Stream #1.0 : Audio : mp3, 44100 Hz, stereo, 128 kb/s Output #0, flv, to 'output.flv' : Stream #0.0 : Video : flv, yuv420p, 468x312, q=2-31, 1000.00 tb(c) Stream #0.1 : Audio : 0x0000 Stream mapping : Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 [flv @ 0x2b72415e00c0]sample rate not set Could not write header for output file #0 (incorrect codec parameters ?)
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FFMPEG preset is not found ? Linux Cent OS 6
25 août 2012, par DariusI ran this command
ffmpeg -i v-16418145218d8d7abdaabec46beb22ecffd2f5d1625.flv -y -acodec aac -ac 2 -ab 160k -vcodec libx264 -vpre iPod640 -vpre slow -f mp4 -threads 0 OUTPUT.mp4
Got this response :
[flv @ 0x10ff670]Estimating duration from bitrate, this may be inaccurate
Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 25.00 (25/1)
Input #0, flv, from 'v-16418145218d8d7abdaabec46beb22ecffd2f5d1625.flv':
Metadata:
duration : 14
width : 320
height : 240
videodatarate : 500
framerate : 25
videocodecid : 2
audiodatarate : 0
audiosamplerate : 22050
audiosamplesize : 16
stereo : true
audiocodecid : 2
filesize : 912970
Duration: 00:00:13.92, start: 0.000000, bitrate: 576 kb/s
Stream #0.0: Video: flv, yuv420p, 320x240, 512 kb/s, 25 tbr, 1k tbn, 1k tbc
Stream #0.1: Audio: mp3, 22050 Hz, 2 channels, s16, 64 kb/s
File for preset 'iPod640' not foundBut after doing a find, this is what I found.
/usr/share/ffmpeg/libx264-ipod320.ffpreset
/usr/share/ffmpeg/libx264-ipod640.ffpreset **** ITS HERE ******
/usr/share/ffmpeg/libx264-lossless_fast.ffpreset
/usr/share/ffmpeg/libx264-lossless_max.ffpreset
/usr/share/ffmpeg/libx264-lossless_medium.ffpreset
/usr/share/ffmpeg/libx264-lossless_slow.ffpreset
/usr/share/ffmpeg/libx264-lossless_slower.ffpreset
/usr/share/ffmpeg/libx264-lossless_ultrafast.ffpreset
/usr/share/ffmpeg/libx264-main.ffpreset
/usr/share/ffmpeg/libx264-max.ffpreset
/usr/share/ffmpeg/libx264-medium.ffpreset
/usr/share/ffmpeg/libx264-medium_firstpass.ffpreset
/usr/share/ffmpeg/libx264-normal.ffpreset
/usr/share/ffmpeg/libx264-placebo.ffpreset
/usr/share/ffmpeg/libx264-placebo_firstpass.ffpreset
/usr/share/ffmpeg/libx264-slow.ffpreset
/usr/share/ffmpeg/libx264-slow_firstpass.ffpreset
/usr/share/ffmpeg/libx264-slower.ffpresetI alos tried with -vpre libx264-ipod640 and still no luck. I get preset libx264-ipod640 is not found.... Do i have to enable presets somehow ? ffmpeg — enable presets ? or something ?
** EDIT : My ffmpeg version info **
FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.19. 0 / 1.19. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0
FFmpeg 0.6.5
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.19. 0 / 1.19. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0