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Autres articles (101)
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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. -
Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)
Sur d’autres sites (8618)
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ffmpeg cannot generate thumbnail [migrated]
25 mars 2013, par Alex FloI use ffmpeg to generate 10 .jpeg thumbs out of a video file. Most of the time it works fine but for some files (a 55seconds .mp4 for example) I get only the first 4 out of 10 captures, for the rest I get this error :
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)The command I use to convert is this one
ffmpeg -ss 16 -i /path/source.mp4 -y -f image2 -t 0.001 -s 320*240 /path/thumb4.jpg
where -ss value is a multiple of 4 and from 20 it stops working.Command line full output :
`# ffmpeg -ss 77 -i /path/source.mp4 -y -f image2 -t 0.001 -s 320*240 /path/thumb7.jpg
ffmpeg version git-2013-02-25-b8f6912 Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 25 2013 15:18:21 with gcc 4.4.5 (Debian 4.4.5-8)
configuration: --enable-shared --enable-libx264 --enable-gpl
libavutil 52. 17.103 / 52. 17.103
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.100 / 54. 63.100
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 41.100 / 3. 41.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/path/source.mp4':
Metadata:
major_brand : mp42
minor_version : 19529845
compatible_brands: mp42isom
creation_time : 2013-03-20 21:45:43
Duration: 00:02:04.62, start: 0.000000, bitrate: 605 kb/s
Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 64 kb/s
Metadata:
creation_time : 2013-03-20 21:45:43
handler_name : Sound Media Handler
Stream #0:1(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 720x480 [SAR 40:33 DAR 20:11], 983 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
Metadata:
creation_time : 2013-03-20 21:45:43
handler_name : Video Media Handler
Output #0, image2, to '/path/thumb7.jpg':
Metadata:
major_brand : mp42
minor_version : 19529845
compatible_brands: mp42isom
encoder : Lavf54.63.100
Stream #0:0(eng): Video: mjpeg, yuvj420p, 320x240 [SAR 15:11 DAR 20:11], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
Metadata:
creation_time : 2013-03-20 21:45:43
handler_name : Video Media Handler
Stream mapping:
Stream #0:1 -> #0:0 (h264 -> mjpeg)
Press [q] to stop, [?] for help
frame= 0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead -inf%
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)` -
FFmpeg returning an error - What does it mean ?
19 mars 2013, par user1031947I am using FFmpeg, libmp3lame & libx264 along with the node fluent-ffmpeg module. This is my first foray into processing uploaded videos.
From node, I use the following code to process an uploaded video :
var proc = new ffmpeg({ source: src, nolog: true })
.usingPreset( "podcast" )
.withAudioCodec( "libmp3lame" )
.saveToFile( dest, function( retcode, err ){
if( err ) throw err;
...
});When I try to process a video, this fails with the following error, which I don't understand. I am hoping someone here can help point me in the right direction. Thanks !
> ffmpeg version 0.8.5-6:0.8.5-1, Copyright (c) 2000-2012 the Libav
> developers built on Jan 13 2013 12:05:48 with gcc 4.7.2
> *** THIS PROGRAM IS DEPRECATED *** This program is only provided for compatibility and will be removed in a future release. Please use
> avconv instead.
>
> Seems stream 0 codec frame rate differs from container frame rate:
> 5994.00 (5994/1) -> 29.97 (2997/100) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
> '/home/ssp/resources/tmp/32111bf4217e87c23328ec81c56c7d02':
> Metadata:
> major_brand : M4VP
> minor_version : 1
> compatible_brands: M4VPM4A mp42isom
> creation_time : 2008-08-26 17:28:47 Duration: 00:00:08.01, start: 0.000000, bitrate: 944 kb/s
> Stream #0.0(eng): Video: h264 (Constrained Baseline), yuv420p, 480x272, 815 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 5994 tbc
> Metadata:
> creation_time : 2008-08-26 17:28:47
> Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 124 kb/s
> Metadata:
> creation_time : 2008-08-26 17:28:47 [buffer @ 0xb685a0] w:480 h:272 pixfmt:yuv420p [scale @ 0xb63280] w:480 h:272 fmt:yuv420p ->
> w:320 h:176 fmt:yuv420p flags:0x4 [libx264 @ 0xb67c20] VBV maxrate
> unspecified, assuming CBR [libx264 @ 0xb67c20] using cpu capabilities:
> MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX [libx264 @ 0xb67c20]
> profile Main, level 1.3 Output #0, m4v, to
> '/home/ssp/resources/users/11/026468c8f4ea1beee0a585ebc2208137.m4v':
> Metadata:
> major_brand : M4VP
> minor_version : 1
> compatible_brands: M4VPM4A mp42isom
> creation_time : 2008-08-26 17:28:47
> encoder : Lavf53.21.1
> Stream #0.0(eng): Video: libx264, yuv420p, 320x176, q=10-51, 512 kb/s, 90k tbn, 29.97 tbc
> Metadata:
> creation_time : 2008-08-26 17:28:47
> Stream #0.1(eng): Audio: libmp3lame, 44100 Hz, 1 channels, s16, 128 kb/s
> Metadata:
> creation_time : 2008-08-26 17:28:47 Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press ctrl-c to stop encoding frame= 240 fps=154 q=11.0 Lsize= 642kB time=7.97 bitrate=
> 659.3kbits/s video:516kB audio:126kB global headers:0kB muxing overhead 0.000000% frame I:1 Avg QP:15.35 size: 9995 [libx264 @
> 0xb67c20] frame P:77 Avg QP:13.25 size: 5419 [libx264 @ 0xb67c20]
> frame B:162 Avg QP:18.31 size: 625 [libx264 @ 0xb67c20]
> consecutive B-frames: 2.5% 12.5% 30.0% 55.0% [libx264 @ 0xb67c20] mb
> I I16..4: 9.1% 0.0% 90.9% [libx264 @ 0xb67c20] mb P I16..4: 2.1%
> 0.0% 2.8% P16..4: 18.0% 29.9% 44.8% 0.0% 0.0% skip: 2.3% [libx264 @ 0xb67c20] mb B I16..4: 0.1% 0.0% 0.0% B16..8: 35.2%
> 20.2% 1.9% direct:14.5% skip:28.1% L0:26.3% L1:38.1% BI:35.6% [libx264 @ 0xb67c20] coded y,uvDC,uvAC intra: 83.7% 91.7% 84.7% inter:
> 27.7% 43.4% 13.9% [libx264 @ 0xb67c20] i16 v,h,dc,p: 20% 29% 42% 9% [libx264 @ 0xb67c20] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 29% 20% 4%
> 8% 6% 9% 3% 4% [libx264 @ 0xb67c20] i8c dc,h,v,p: 60% 19% 16% 5%
> [libx264 @ 0xb67c20] Weighted P-Frames: Y:2.6% UV:0.0% [libx264 @
> 0xb67c20] ref P L0: 75.6% 13.5% 8.0% 2.8% 0.1% [libx264 @ 0xb67c20]
> ref B L0: 94.5% 5.5% [libx264 @ 0xb67c20] kb/s:528.00 -
Revision 382f86f945 : Improve the performance by caching the left_mi and right_mi in macroblockd. Thi
5 décembre 2014, par hkuangChanged Paths :
Modify /vp9/common/vp9_blockd.h
Modify /vp9/common/vp9_onyxc_int.h
Modify /vp9/common/vp9_pred_common.c
Modify /vp9/common/vp9_pred_common.h
Modify /vp9/encoder/vp9_bitstream.c
Modify /vp9/encoder/vp9_rdopt.c
Improve the performance by caching the left_mi and right_mi in macroblockd.This improve the deocde performance by 2% on Nexus 7 2013.
Change-Id : Ie9c4ba0371a149eb7fddc687a6a291c17298d6c3
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