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Autres articles (111)
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Qualité du média après traitement
21 juin 2013, parLe bon réglage du logiciel qui traite les média est important pour un équilibre entre les partis ( bande passante de l’hébergeur, qualité du média pour le rédacteur et le visiteur, accessibilité pour le visiteur ). Comment régler la qualité de son média ?
Plus la qualité du média est importante, plus la bande passante sera utilisée. Le visiteur avec une connexion internet à petit débit devra attendre plus longtemps. Inversement plus, la qualité du média est pauvre et donc le média devient dégradé voire (...) -
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 (...) -
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 (...)
Sur d’autres sites (6103)
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Unrecognized option 'preset' with ubuntu 12.04 and ffmpeg
5 novembre 2013, par hyperrjasI have compiled ffmpeg with the guide How To Compile FFmpeg and x264 on Ubuntu.
Now I'm trying upload a .mp4 file to encode. However I get this error now :
ffmpeg version git-2013-11-05-934e489 Copyright (c) 2000-2013 the FFmpeg developers
built on Nov 5 2013 13:58:43 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --enable-gpl --enable-libass --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-x11grab --enable-nonfree --enable-version3
libavutil 52. 51.100 / 52. 51.100
libavcodec 55. 41.100 / 55. 41.100
libavformat 55. 21.100 / 55. 21.100
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 90.101 / 3. 90.101
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Unrecognized option 'preset'.
Error splitting the argument list: Option not found
Errors: no output file created.This is the ruby methods to encode :
case format
when 'mp4'
h[:video_codec] = 'libx264'
h[:audio_codec] = 'libfaac'
h[:custom] = '-qscale 0 -preset slow -g 30'
when 'ogv'
h[:video_codec] = 'libtheora'
h[:audio_codec] = 'libvorbis'
h[:custom] = '-b 1500k -ab 160000 -g 30'
when 'webm'
h[:video_codec] = 'libvpx'
h[:audio_codec] = 'libvorbis'
h[:custom] = '-b 1500k -ab 160000 -f webm -g 30'
end -
ffmpeg fastest way to convert videos avi to mp4 [migrated]
5 novembre 2013, par user2938660I have server which has :
- 8x3,4 (sandy bridge cpu)
- 10gb ram
i tried different combinations to convert vvideos i mean avi to mp4 but it takes so long :
- 20mins= 200mbmaybe there is some ffmpeg command which does this much faster ?
EDIT WITH ULTRAFAST :
root@1tb:~/test# ffmpeg -i video.avi -c:v libx264 -preset ultrafast out.mp4
ffmpeg version git-2013-10-28-f1f0b01 Copyright (c) 2000-2013 the FFmpeg developers
built on Oct 29 2013 02:05:45 with gcc 4.4.5 (Debian 4.4.5-8)
configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3 --enable-x11grab
libavutil 52. 48.100 / 52. 48.100
libavcodec 55. 39.100 / 55. 39.100
libavformat 55. 19.104 / 55. 19.104
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 90.100 / 3. 90.100
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, avi, from 'video.avi':
Duration: 00:29:00.28, start: 0.000000, bitrate: 1120 kb/s
Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 23.98 tbr, 23.98 tbn, 23.98 tbc
Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p, 128 kb/s
Metadata:
title : Hello.Ladies.S01E06.HDTV.XviD-AFG_360p.audio
[libx264 @ 0x2e08e40] using SAR=1/1
[libx264 @ 0x2e08e40] using cpu capabilities: none!
[libx264 @ 0x2e08e40] profile Constrained Baseline, level 3.0
[libx264 @ 0x2e08e40] 264 - core 138 r2358 9e941d1 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=23 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
Output #0, mp4, to 'out.mp4':
Metadata:
encoder : Lavf55.19.104
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=-1--1, 10000k tbn, 23.98 tbc
Stream #0:1: Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s
Metadata:
title : Hello.Ladies.S01E06.HDTV.XviD-AFG_360p.audio
Stream mapping:
Stream #0:0 -> #0:0 (mpeg4 -> libx264)
Stream #0:1 -> #0:1 (mp3 -> libfaac)
Press [q] to stop, [?] for help
frame=41726 fps=326 q=-1.0 Lsize= 312916kB time=00:29:00.32 bitrate=1473.0kbits/s dup=1 drop=0
video:284876kB audio:27186kB subtitle:0 global headers:0kB muxing overhead 0.273494%
[libx264 @ 0x2e08e40] frame I:167 Avg QP:18.69 size: 30492
[libx264 @ 0x2e08e40] frame P:41559 Avg QP:21.68 size: 6897
[libx264 @ 0x2e08e40] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0x2e08e40] mb P I16..4: 6.3% 0.0% 0.0% P16..4: 51.2% 0.0% 0.0% 0.0% 0.0% skip:42.5%
[libx264 @ 0x2e08e40] coded y,uvDC,uvAC intra: 44.9% 54.5% 19.0% inter: 28.1% 20.3% 2.2%
[libx264 @ 0x2e08e40] i16 v,h,dc,p: 43% 23% 21% 13%
[libx264 @ 0x2e08e40] i8c dc,h,v,p: 36% 22% 32% 11%
[libx264 @ 0x2e08e40] kb/s:1340.96
root@1tb:~/test# qt-faststart out.mp4 labas1.mp4
ftyp 0 32
free 32 8
mdat 40 319552104
moov 319552144 873943
patching stco atom...
patching stco atom...
writing ftyp atom...
writing moov atom...
copying rest of file...
root@1tb:~/test# -
Error using ffmpeg image2pipe with phantomjs to render video from webpage screenshots
14 novembre 2016, par user1690179I am trying to use phantomjs with ffmpeg to complie videos from screenshots of a webpage as described here :
https://groups.google.com/forum/# !msg/phantomjs/wluVGGjhL90/oGBXqh7QP44JI have the following test.js file :
var page = require('webpage').create();
page.clipRect = { top: 0, left: 0, width: 900, height: 800};
page.viewportSize = { width: 900, height: 800};
var url = 'http://dl.dropbox.com/u/621993/voronoi/voronoi.html';
var frames = 100;
page.open(url, function(){
setInterval(function(){
page.render('/dev/stdout');
if( frames == 0 ){
phantom.exit();
}
frames--;
}, 100);
});Then I run this command, taken from the link above :
$ phantomjs test.js |ffmpeg -c:v png -f image2pipe -r 10 -sameq -i - -y test.mp4Including -sameq causes an error in ffmpeg, so I took it out and ran :
$ phantomjs test.js |ffmpeg -c:v png -f image2pipe -r 10 -i - -y test.mp4I get the following output from ffmpeg :
ffmpeg version 2.0 Copyright (c) 2000-2013 the FFmpeg developers
built on Jul 22 2013 09:14:18 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-libgsm --arch=x86_64 --enable-runtime-cpudetect
libavutil 52. 38.100 / 52. 38.100
libavcodec 55. 18.102 / 55. 18.102
libavformat 55. 12.100 / 55. 12.100
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 79.101 / 3. 79.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, image2pipe, from 'pipe:':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: png, rgba, 900x800 [SAR 2835:2835 DAR 9:8], 10 fps, 10 tbr, 10 tbn, 10 tbc
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x7f8973803800] using SAR=1/1
[libx264 @ 0x7f8973803800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x7f8973803800] profile High 4:4:4 Predictive, level 3.1, 4:4:4 8-bit
[libx264 @ 0x7f8973803800] 264 - core 133 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=10 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'test.mp4':
Metadata:
encoder : Lavf55.12.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 900x800 [SAR 1:1 DAR 9:8], q=-1--1, 10240 tbn, 10 tbc
Stream mapping:
Stream #0:0 -> #0:0 (png -> libx264)
pipe:: Input/output error0 size= 65kB time=00:00:04.10 bitrate= 130.5kbits/s
frame= 93 fps= 15 q=-1.0 Lsize= 71kB time=00:00:09.10 bitrate= 63.8kbits/s
video:69kB audio:0kB subtitle:0 global headers:0kB muxing overhead 2.696543%
[libx264 @ 0x7f8973803800] frame I:1 Avg QP:15.17 size: 50212
[libx264 @ 0x7f8973803800] frame P:24 Avg QP: 8.91 size: 575
[libx264 @ 0x7f8973803800] frame B:68 Avg QP: 9.69 size: 87
[libx264 @ 0x7f8973803800] consecutive B-frames: 2.2% 0.0% 3.2% 94.6%
[libx264 @ 0x7f8973803800] mb I I16..4: 64.2% 19.6% 16.1%
[libx264 @ 0x7f8973803800] mb P I16..4: 2.8% 0.2% 0.1% P16..4: 0.5% 0.0% 0.0% 0.0% 0.0% skip:96.3%
[libx264 @ 0x7f8973803800] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 3.1% 0.0% 0.0% direct: 0.0% skip:96.9% L0:76.4% L1:23.6% BI: 0.0%
[libx264 @ 0x7f8973803800] 8x8 transform intra:13.9% inter:54.0%
[libx264 @ 0x7f8973803800] coded y,u,v intra: 7.4% 4.8% 5.2% inter: 0.1% 0.1% 0.1%
[libx264 @ 0x7f8973803800] i16 v,h,dc,p: 68% 31% 2% 0%
[libx264 @ 0x7f8973803800] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 48% 20% 32% 0% 0% 0% 0% 0% 0%
[libx264 @ 0x7f8973803800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 31% 20% 3% 3% 3% 5% 3% 4%
[libx264 @ 0x7f8973803800] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7f8973803800] ref P L0: 91.9% 0.0% 7.4% 0.7%
[libx264 @ 0x7f8973803800] ref B L0: 20.5% 79.5%
[libx264 @ 0x7f8973803800] ref B L1: 99.9% 0.1%
[libx264 @ 0x7f8973803800] kb/s:60.16The output test.mp4 file is a blank 10 second video - just a black screen. From what i can tell, I am getting a pipe: : Input/output error from ffmpeg.
I am pretty new to ffmpeg and I have tried changing some parameters and video codecs in the ffmpeg call, but have not found a solution yet. Can anyone advise ?
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