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Géodiversité
9 septembre 2011, par ,
Mis à jour : Août 2018
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USGS Real-time Earthquakes
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SWFUpload Process
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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
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Podcasting Legal guide
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Mis à jour : Mai 2011
Langue : English
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Creativecommons informational flyer
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Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (78)
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Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...) -
Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)
Sur d’autres sites (10394)
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ffmpeg reencoding of flv files from MAC
22 septembre 2011, par Nick MitinI've recorded a video from a webcam on mac and now i'm trying to reencode it, but ffmpeg does not recognize audio stream :
FFmpeg version git-120610e, Copyright (c) 2000-2010 the FFmpeg developers built on Sep 21 2010 15:56:57 with gcc 4.4.1 configuration : —enable-gpl —enable-version3 —enable-nonfree —enable-postproc —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvorbis —enable-libmp3lame —enable-libx264 libavutil 50.27. 0 / 50.27. 0 libavcore 0. 9. 0 / 0. 9. 0 libavcodec 52.89. 0 / 52.89. 0 libavformat 52.78. 5 / 52.78. 5 libavdevice 52. 2. 2 / 52. 2. 2 libavfilter 1.39. 0 / 1.39. 0 libswscale 0.11. 0 / 0.11. 0 libpostproc 51. 2. 0 / 51. 2. 0 [flv @ 0x1e79470] Estimating duration from bitrate, this may be inaccurate Input #0, flv, from '10125174c09241f6536ccbe503ebbc00.flv' : Duration : 00:00:22.68, start : 0.000000, bitrate : N/A Stream #0.0 : Video : flv, yuv420p, 640x480, 1k tbr, 1k tbn, 1k tbc Stream #0.1 : Audio : [0][0][0][0] / 0x0000, 0 channels
Is it possible to make ffmpeg to support audio stream form flv recorded on MAC ?
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Why is the streaming fps is so large (about 600) when I do ffmpeg streaming a video file through udp ?
3 juillet 2014, par user1914692Ubuntu 12.04. ffmpeg version git-2013-03-26-1741fec Copyright (c) 2000-2013 the FFmpeg developers
The command I use is :
ffmpeg -i output_20140630.avi -f mpegts udp://192.168.1.56:1234
The streaming fps is about 600, shown in the same terminal.
If I use the command :
ffmpeg -i output_20140630.avi -f mpegts udp://236.0.0.1:200
Then it is fine. And I can use the command below to play the streamed video :
ffplay udp://236.0.0.1:2000
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Video Conversion to have Play Speed
24 juin 2014, par TaufiqThere is a open source Media Player Component called Media Kit (https://wpfmediakit.codeplex.com/). It supports Play Speed. But its dependent on video format.
I have generated a video using SharpAvi (http://sharpavi.codeplex.com/) sample project, using Motion Jepg Encoder.
This video does not have Play Speed support for some reason. Details Below from ffmpeg
Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc), 1920x1080 [SAR 96:96 DAR 16:9], 9818 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc
Next I download an flv video from Youtube and Media Kit’s play speed works fine with this video.
Video: flv1, yuv420p, 426x240, 259 kb/s, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc
Now I converted them into common MP4 format using ffmepg
ffmpeg -i "1.avi" -ar 22050 -b 2048k "1.mp4"
ffmpeg -i "2.flv" -ar 22050 -b 2048k "2.mp4"Results
1.mp4
Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240, 1235 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
2.mp4
Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920 x1080 [SAR 1:1 DAR 16:9], 158 kb/s, 10 fps, 10 tbr, 10240 tbn, 20 tbc (default)
The thing is the converted video from flv file still supports play speed where else the converted mp4 from the Avi does not. What is that I am missing
More Details Below.
AVI File
ffmpeg -i "1.avi" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC) configuration:
--enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
-enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib libavutil 52. 90.100 / 52. 90.100 libavcodec 55. 68.100 /
55. 68.100 libavformat 55. 44.100 / 55. 44.100 libavdevice 55. 13.101 / 55. 13.101 libavfilter 4. 9.100 / 4. 9.100 libswscale 2. 6.100 / 2. 6.100 libswresample 0. 19.100 /
0. 19.100 libpostproc 52. 3.100 / 52. 3.100 [avi @ 028fe560] non-interleaved AVI Input #0, avi, from '1.avi': Duration: 00:00:37.50, start: 0.000000, bitrate: 9794 kb/s
Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc), 1920x1080 [SAR 96:96 DAR 16:9], 9818 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc
Metadata:
title : Screencast At least one output file must be specifiedfLV File
ffmpeg -i "2.flv" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC) configuration:
--enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
-enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib libavutil 52. 90.100 / 52. 90.100 libavcodec 55. 68.100 /
55. 68.100 libavformat 55. 44.100 / 55. 44.100 libavdevice 55. 13.101 / 55. 13.101 libavfilter 4. 9.100 / 4. 9.100 libswscale 2. 6.100 / 2. 6.100 libswresample 0. 19.100 /
0. 19.100 libpostproc 52. 3.100 / 52. 3.100 [flv @ 02b8e560] Stream discovered after head already parsed Input #0, flv, from '2.flv': Metadata:
starttime : 0
totalduration : 85
totaldatarate : 325
bytelength : 3438869
canseekontime : true
sourcedata : B4A7DA902MM1403531086617082
purl :
pmsg : Duration: 00:01:24.63, start: 0.000000, bitrate: 325 kb/s
Stream #0:0: Video: flv1, yuv420p, 426x240, 259 kb/s, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: mp3, 22050 Hz, stereo, s16p, 65 kb/s
Stream #0:2: Data: none At least one output file must be specifiedAVI to MP4
ffmpeg -i "1.mp4" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC) configuration:
--enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
-enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib libavutil 52. 90.100 / 52. 90.100 libavcodec 55. 68.100 /
55. 68.100 libavformat 55. 44.100 / 55. 44.100 libavdevice 55. 13.101 / 55. 13.101 libavfilter 4. 9.100 / 4. 9.100 libswscale 2. 6.100 / 2. 6.100 libswresample 0. 19.100 /
0. 19.100 libpostproc 52. 3.100 / 52. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4': Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.44.100 Duration: 00:00:37.50, start: 0.000000, bitrate: 159 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920 x1080 [SAR 1:1 DAR 16:9], 158 kb/s, 10 fps, 10 tbr, 10240 tbn, 20 tbc (default)
Metadata:
handler_name : VideoHandler At least one output file must be specifiedFLV to MP4
ffmpeg -i "2.mp4" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC) configuration:
--enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
-enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib libavutil 52. 90.100 / 52. 90.100 libavcodec 55. 68.100 /
55. 68.100 libavformat 55. 44.100 / 55. 44.100 libavdevice 55. 13.101 / 55. 13.101 libavfilter 4. 9.100 / 4. 9.100 libswscale 2. 6.100 / 2. 6.100 libswresample 0. 19.100 /
0. 19.100 libpostproc 52. 3.100 / 52. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2.mp4': Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.44.100 Duration: 00:01:24.81, start: 0.072562, bitrate: 1365 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240, 1235 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 12 8 kb/s (default)
Metadata:
handler_name : SoundHandler At least one output file must be specified