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Géodiversité
9 septembre 2011, par ,
Mis à jour : Août 2018
Langue : français
Type : Texte
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USGS Real-time Earthquakes
8 septembre 2011, par
Mis à jour : Septembre 2011
Langue : français
Type : Texte
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SWFUpload Process
6 septembre 2011, par
Mis à jour : Septembre 2011
Langue : français
Type : Texte
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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
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Podcasting Legal guide
16 mai 2011, par
Mis à jour : Mai 2011
Langue : English
Type : Texte
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Creativecommons informational flyer
16 mai 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (110)
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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 (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
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 (...)
Sur d’autres sites (9828)
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tests/fate/vcodec : add dnxhr edge tests
8 août 2016, par Mark Reidtests/fate/vcodec : add dnxhr edge tests
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
- [DH] tests/fate/vcodec.mak
- [DH] tests/ref/vsynth/vsynth1-dnxhd-edge1-hr
- [DH] tests/ref/vsynth/vsynth1-dnxhd-edge2-hr
- [DH] tests/ref/vsynth/vsynth1-dnxhd-edge3-hr
- [DH] tests/ref/vsynth/vsynth2-dnxhd-edge1-hr
- [DH] tests/ref/vsynth/vsynth2-dnxhd-edge2-hr
- [DH] tests/ref/vsynth/vsynth2-dnxhd-edge3-hr
- [DH] tests/ref/vsynth/vsynth3-dnxhd-edge1-hr
- [DH] tests/ref/vsynth/vsynth3-dnxhd-edge2-hr
- [DH] tests/ref/vsynth/vsynth3-dnxhd-edge3-hr
- [DH] tests/ref/vsynth/vsynth_lena-dnxhd-edge1-hr
- [DH] tests/ref/vsynth/vsynth_lena-dnxhd-edge2-hr
- [DH] tests/ref/vsynth/vsynth_lena-dnxhd-edge3-hr
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FFmpeg generated video length doesn't match expected length [on hold]
21 juin 2018, par BentCoderI am using command below to generate video out of images. The problem is the length out the video generated. It is always 5 seconds less than expected. If I have 4 images, I expect to see 20 seconds of video but I am getting 15 seconds instead. The very last image
img-03.jpg
just appears at the end of the video as if it is a cover image. Any idea why and solution ?Command
ffmpeg -y -framerate 1/5 -f image2 \
-i img-%2d.jpg \
-c:v libvpx-vp9 \
-r 25 \
-crf 30 -b:v 0 \
video.webmImages
img-00.jpg
img-01.jpg
img-02.jpg
img-03.jpgOutput
ffmpeg version 3.2.10-1~deb9u1~bpo8+1 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --prefix=/usr --extra-version='1~deb9u1~bpo8+1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --disable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
Input #0, image2, from 'img-%2d.jpg':
Duration: 00:00:20.00, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 854x480 [SAR 1:1 DAR 427:240], 0.20 fps, 0.20 tbr, 0.20 tbn, 0.20 tbc
[swscaler @ 0x55f2af60e800] deprecated pixel format used, make sure you did set range correctly
[libvpx-vp9 @ 0x55f2af6276a0] v1.3.0
Output #0, webm, to 'video.webm':
Metadata:
encoder : Lavf57.56.101
Stream #0:0: Video: vp9 (libvpx-vp9), yuv420p, 854x480 [SAR 1:1 DAR 427:240], q=-1--1, 25 fps, 1k tbn, 25 tbc
Metadata:
encoder : Lavc57.64.101 libvpx-vp9
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> vp9 (libvpx-vp9))
Press [q] to stop, [?] for help
Input stream #0:0 frame changed from size:854x480 fmt:yuvj444p to size:854x480 fmt:yuvj420p
[swscaler @ 0x55f2af602b60] deprecated pixel format used, make sure you did set range correctly
frame= 4 fps=0.0 q=0.0 Lsize= 214kB time=00:00:15.00 bitrate= 117.0kbits/s speed= 16x
video:214kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.234810% -
FFMpeg/video4linux2,v4l2 : The v4l2 frame is 46448 bytes, but 153600 bytes are expected (Webcam capture not fast enough ?)
30 août 2013, par user763410I am trying to capture webcam output in linux/ubuntu. I have a chicony webcam (lenovo laptop). I am running inside a VMWARE virtual machine. The capture is not proceeding beyond 10 seconds. can you please help.
The command I used is :
$ ffmpeg -y -f video4linux2 -r 20 -s 160x120 -i /dev/video0 -acodec libfaac -ab 128k /tmp/web.avi
The most important message I am getting is :
[video4linux2,v4l2 @ 0x9e43fa0] The v4l2 frame is 46448 bytes, but 153600 bytes are expected
Complete message from ffmpeg :
ffmpeg version N-55159-gf118b41 Copyright (c) 2000-2013 the FFmpeg developers
built on Aug 18 2013 09:09:13 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --enable-libass --prefix=/opt/ffmpeg --enable-debug --enable-libfreetype
libavutil 52. 40.100 / 52. 40.100
libavcodec 55. 19.100 / 55. 19.100
libavformat 55. 12.102 / 55. 12.102
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 82.100 / 3. 82.100
libswscale 2. 4.100 / 2. 4.100
libswresample 0. 17.103 / 0. 17.103
[video4linux2,v4l2 @ 0x9e43fa0] The V4L2 driver changed the video from 160x120 to 320x240
[video4linux2,v4l2 @ 0x9e43fa0] The driver changed the time per frame from 1/20 to 1/15
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 6424.338678, bitrate: 18432 kb/s
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 320x240, 18432 kb/s, 15 fps, 15 tbr, 1000k tbn, 1000k tbc
Codec AVOption ab (set bitrate (in bits/s)) specified for output file #0 (/tmp/web.avi) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
Output #0, avi, to '/tmp/web.avi':
Metadata:
ISFT : Lavf55.12.102
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240, q=2-31, 200 kb/s, 20 tbn, 20 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo -> mpeg4)
Press [q] to stop, [?] for help
[video4linux2,v4l2 @ 0x9e43fa0] The v4l2 frame is 46448 bytes, but 153600 bytes are expected
/dev/video0: Invalid data found when processing input
frame= 29 fps= 14 q=3.5 Lsize= 87kB time=00:00:01.45 bitrate= 490.0kbits/s
video:80kB audio:0kB subtitle:0 global headers:0kB muxing overhead 7.760075%
[video4linux2,v4l2 @ 0x9e43fa0] Some buffers are still owned by the caller on close.