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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (38)
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MediaSPIP version 0.1 Beta
16 avril 2011, parMediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
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 (...) -
Mise à jour de la version 0.1 vers 0.2
24 juin 2013, parExplications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...)
Sur d’autres sites (1723)
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Video parameters for best web scrolling performance [duplicate]
22 février 2018, par bivenThis question already has an answer here :
There is web application which provides next workflow. User uploads video -> backend(by using ffmpeg) transform this video for smaller size(320x240) -> web browser plays transformed video. Key feature of this application should be excellent scrolling possibility of video by progress bar. I mean that video should be scrolled as smoothly as possible (without any jumps) when user moves progress bar position back and forward.
I thought that small size of video helps to provide good scrolling possibility. But that’s incorrect. I have 2 different videos, one scrolling perfect(as I want), second has same resolotion(320x240), but it is scrolling with jumps and breaks.
By ffprobe I compared both videos and I have next results :
Video 1(good scrolling) :
libavutil 56. 7.100 / 56. 7.100
libavcodec 58. 9.100 / 58. 9.100
libavformat 58. 5.100 / 58. 5.100
libavdevice 58. 0.101 / 58. 0.101
libavfilter 7. 11.101 / 7. 11.101
libswscale 5. 0.101 / 5. 0.101
libswresample 3. 0.101 / 3. 0.101
libpostproc 55. 0.100 / 55. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'spacetestSMALL_512kb.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: mp41
creation_time : 1970-01-01T00:00:00.000000Z
title : small test video - http://www.archive.org/details/alanoakleysmalltestvideo
encoder : Lavf51.10.0
comment : license: http://www.copyright.gov/
Duration: 00:00:48.32, start: 0.000000, bitrate: 555 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x240, 505 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc (default)
Metadata:
creation_time : 1970-01-01T00:00:00.000000Z
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 45 kb/s (default)
Metadata:
creation_time : 1970-01-01T00:00:00.000000Z
handler_name : SoundHandlerVideo 2(bad scrolling) :
libavutil 56. 7.100 / 56. 7.100
libavcodec 58. 9.100 / 58. 9.100
libavformat 58. 5.100 / 58. 5.100
libavdevice 58. 0.101 / 58. 0.101
libavfilter 7. 11.101 / 7. 11.101
libswscale 5. 0.101 / 5. 0.101
libswresample 3. 0.101 / 3. 0.101
libpostproc 55. 0.100 / 55. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'e10b1c93-5325-4500-ae7c-12ccd0f617bd.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.5.100
Duration: 00:00:07.96, start: 0.000000, bitrate: 428 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 320x240 [SAR 4:3 DAR 16:9], 391 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 33 kb/s (default)
Metadata:
handler_name : SoundHandlerWhat is the key parameter of video which provide possibility for good scrolling in web browser ?
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Cut video command producing only audio
12 février 2018, par SandeepI am using
ffmpeg
in Android app and my command code looks like :final String[] command=new String[]{"-i",inputFileName , "-ss",
String.valueOf(duration) , "-codec","copy", "-t",String.valueOf(start) , outputFileName};The logcat contains following ffmpeg output which shows video as
0kB
in last line. Where should I look for fixing this because the final output file is a mp4 file but the video content is missing and only audio is present for the trimmed duration :02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg ffmpeg version n3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg built with gcc 4.9.x (GCC) 20150123 (prerelease)
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg configuration: --target-os=linux --cross-prefix=/root/bravobit/ffmpeg-android/toolchain-android/bin/i686-linux-android- --arch=x86 --cpu=i686 --enable-runtime-cpudetect --sysroot=/root/bravobit/ffmpeg-android/toolchain-android/sysroot --disable-asm --enable-pic --enable-libx264 --enable-libfreetype --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libopus --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-linux-perf --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --enable-nonfree --enable-network --enable-avresample --enable-avformat --enable-avcodec --enable-indev=lavfi --enable-hwaccels --enable-ffmpeg --enable-zlib --enable-gpl --enable-small --disable-asm --pkg-config=/root/bravobit/ffmpeg-android/ffmpeg-pkg-config --prefix=/root/bravobit/ffmpeg-android/build/x86 --extra-cflags='-I/root/bravobit/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -march=i686' --extra-ldflags='-L/root/bravobit/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-cxxflags= --extra-libs='-lpng -lx264 -lm -logg'
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg libavutil 55. 78.100 / 55. 78.100
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg libavcodec 57.107.100 / 57.107.100
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg libavformat 57. 83.100 / 57. 83.100
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg libavdevice 57. 10.100 / 57. 10.100
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg libavfilter 6.107.100 / 6.107.100
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg libavresample 3. 7. 0 / 3. 7. 0
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg libswscale 4. 8.100 / 4. 8.100
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg libswresample 2. 9.100 / 2. 9.100
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg libpostproc 54. 7.100 / 54. 7.100
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/DCIM/SampleVideo_1280x720_1mb.mp4':
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Metadata:
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg major_brand : isom
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg minor_version : 512
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg compatible_brands: isomiso2avc1mp41
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg creation_time : 1970-01-01T00:00:00.000000Z
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg encoder : Lavf53.24.2
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Duration: 00:00:05.31, start: 0.000000, bitrate: 1589 kb/s
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Metadata:
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg creation_time : 1970-01-01T00:00:00.000000Z
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg handler_name : VideoHandler
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 384 kb/s (default)
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Metadata:
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg creation_time : 1970-01-01T00:00:00.000000Z
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg handler_name : SoundHandler
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Output #0, mp4, to '/storage/emulated/0/VideoTriming/20180212_172243SampleVideo_1280x720_1mb.mp4':
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Metadata:
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg major_brand : isom
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg minor_version : 512
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg compatible_brands: isomiso2avc1mp41
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg encoder : Lavf57.83.100
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc (default)
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Metadata:
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg creation_time : 1970-01-01T00:00:00.000000Z
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg handler_name : VideoHandler
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 384 kb/s (default)
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Metadata:
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg creation_time : 1970-01-01T00:00:00.000000Z
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg handler_name : SoundHandler
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Stream mapping:
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Stream #0:0 -> #0:0 (copy)
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Stream #0:1 -> #0:1 (copy)
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Press [q] to stop, [?] for help
02-12 17:22:43.910 25335-25335/service D/FFmpeg: Started command : ffmpeg frame= 0 fps=0.0 q=-1.0 Lsize= 46kB time=00:00:00.98 bitrate= 387.1kbits/s speed= 115x
02-12 17:22:43.910 25335-25335/service D/FFmpeg: Started command : ffmpeg video:0kB audio:46kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.145508%My input file is the first 1MB mp4 sample video downloaded from following website :
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ffmpeg generate thumbnails on GPU
22 juin 2018, par Oleksandr KyrpaI try to generate thumbnails with acceleration on GPU, so compile ffmpeg 3.4.1 and run command :
./ffmpeg -i ~/Videos/1080.mp4 -vf "hwupload_cuda,thumbnail_cuda=100,scale_cuda=107:60,hwdownload,format=yuv420p" -vframes 1 -y ~/Videos/thumbs/thumb%03d.jpg
But I get wrong output picture (the color of thumbnail is green) :
Correct image must be black.
How to make first image with correct color ?log : -loglevel verbose
ffmpeg version N-89707-g89b84cb Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
configuration: --cpu=native --enable-pthreads --extra-version=hd --enable-gnutls --enable-vaapi --enable-vdpau --enable-nonfree --enable-gpl --enable-swscale --enable-libx264 --enable-version3 --enable-nvenc --enable-libnpp --enable-cuda --enable-cuvid --enable-cuda-sdk --enable-filter=scale_cuda --enable-filter=thumbnail_cuda --extra-cflags=-I/usr/local/cuda-8.0/include --extra-ldflags=-L/usr/local/cuda-8.0/lib64
libavutil 56. 7.100 / 56. 7.100
libavcodec 58. 9.100 / 58. 9.100
libavformat 58. 3.100 / 58. 3.100
libavdevice 58. 0.100 / 58. 0.100
libavfilter 7. 11.100 / 7. 11.100
libswscale 5. 0.101 / 5. 0.101
libswresample 3. 0.101 / 3. 0.101
libpostproc 55. 0.100 / 55. 0.100
[h264 @ 0x392ed40] Reinit context to 1920x1088, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/alex/Videos/1080.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2012-05-30T20:01:34.000000Z
Duration: 00:01:14.21, start: 0.000000, bitrate: 5476 kb/s
Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 1920x1080 (1920x1088), 5321 kb/s, 29.97 fps, 29.97 tbr, 60k tbn, 59.94 tbc (default)
Metadata:
creation_time : 1970-01-01T00:00:00.000000Z
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 152 kb/s (default)
Metadata:
creation_time : 2012-05-30T20:01:34.000000Z
handler_name : IsoMedia File Produced by Google, 5-11-2011
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
Press [q] to stop, [?] for help
[h264 @ 0x3a38280] Reinit context to 1920x1088, pix_fmt: yuv420p
[Parsed_thumbnail_cuda_1 @ 0x4e3d8c0] batch size: 100 frames
[graph 0 input from stream 0:0 @ 0x4e8b640] w:1920 h:1080 pixfmt:yuv420p tb:1/60000 fr:30000/1001 sar:0/1 sws_param:flags=2
[auto_scaler_0 @ 0x4e8ca00] w:iw h:ih flags:'bicubic' interl:0
[format @ 0x4e8b540] auto-inserting filter 'auto_scaler_0' between the filter 'Parsed_format_4' and the filter 'format'
[Parsed_scale_cuda_2 @ 0x4e89380] w:1920 h:1080 -> w:107 h:60
[swscaler @ 0x4ebf0c0] deprecated pixel format used, make sure you did set range correctly
[auto_scaler_0 @ 0x4e8ca00] w:107 h:60 fmt:yuv420p sar:0/1 -> w:107 h:60 fmt:yuvj420p sar:0/1 flags:0x4
Output #0, image2, to '/home/alex/Videos/thumbs/thumb%03d.jpg':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
encoder : Lavf58.3.100
Stream #0:0(und): Video: mjpeg, 1 reference frame, yuvj420p(pc, left), 107x60, q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc (default)
Metadata:
creation_time : 1970-01-01T00:00:00.000000Z
handler_name : VideoHandler
encoder : Lavc58.9.100 mjpeg
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
[Parsed_thumbnail_cuda_1 @ 0x4e3d8c0] frame id #76 (pts_time=2.535867) selected from a set of 100 images
No more output streams to write to, finishing.
frame= 1 fps=0.9 q=3.1 Lsize=N/A time=00:00:02.56 bitrate=N/A speed=2.26x
video:2kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Input file #0 (/home/alex/Videos/1080.mp4):
Input stream #0:0 (video): 115 packets read (134655 bytes); 101 frames decoded;
Input stream #0:1 (audio): 1 packets read (9 bytes);
Total: 116 packets (134664 bytes) demuxed
Output file #0 (/home/alex/Videos/thumbs/thumb%03d.jpg):
Output stream #0:0 (video): 1 frames encoded; 1 packets muxed (1864 bytes);
Total: 1 packets (1864 bytes) muxedUPDATE, working !
Add format=nv12 before hwupload-vf "format=nv12,hwupload_cuda,thumbnail_cuda,scale_cuda=1280:720,hwdownload,format=nv12"