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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (37)
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(Dés)Activation de fonctionnalités (plugins)
18 février 2011, parPour gérer l’ajout et la suppression de fonctionnalités supplémentaires (ou plugins), MediaSPIP utilise à partir de la version 0.2 SVP.
SVP permet l’activation facile de plugins depuis l’espace de configuration de MediaSPIP.
Pour y accéder, il suffit de se rendre dans l’espace de configuration puis de se rendre sur la page "Gestion des plugins".
MediaSPIP est fourni par défaut avec l’ensemble des plugins dits "compatibles", ils ont été testés et intégrés afin de fonctionner parfaitement avec chaque (...) -
Activation de l’inscription des visiteurs
12 avril 2011, parIl est également possible d’activer l’inscription des visiteurs ce qui permettra à tout un chacun d’ouvrir soit même un compte sur le canal en question dans le cadre de projets ouverts par exemple.
Pour ce faire, il suffit d’aller dans l’espace de configuration du site en choisissant le sous menus "Gestion des utilisateurs". Le premier formulaire visible correspond à cette fonctionnalité.
Par défaut, MediaSPIP a créé lors de son initialisation un élément de menu dans le menu du haut de la page menant (...) -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...)
Sur d’autres sites (5336)
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Revision c725502bf3 : Skip buffer update in sub8x8 rd loop This commit allows the encoder to skip a f
20 juillet 2013, par Jingning HanChanged Paths :
Modify /vp9/encoder/vp9_rdopt.c
Skip buffer update in sub8x8 rd loopThis commit allows the encoder to skip a few buffer update steps in
rd_pick_best_mbsegmentation, when early breakout has been triggered
in the rd_check_segment_txsize. It provides about 1% speed-up for
bus_cif at 2000 kbps, in the settings of speed 0.Change-Id : Ica034f10a24dec572b397d8389a2b81020ebc0b9
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Why ffmpeg command results in blank video ?
17 juillet 2013, par kheyaI am trying to conver mov file to H264 encoded mp4
Same command converts another mov file just fine.But fails for a particular mov file. Original video is 29.6MB after conversion I get 966KB
I get the sound and duration right. But all the frames are black even though original video is fine.
Here is the command :
ffmpeg -i file3.mov -movflags +faststart -vcodec libx264 -preset slow -crf 20 -vf -threads 0 -acodec libvo_aacenc -b:a 128k "file3.mp4"
Here is the result of ffmpeg -i : >ffmpeg.exe -i file3.mov
ffmpeg version N-54691-g7f4a1fd Copyright (c) 2000-2013 the FFmpeg developers
built on Jul 12 2013 16:31:48 with gcc 4.7.3 (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-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
enable-libxvid --enable-zlib
libavutil 52. 39.100 / 52. 39.100
libavcodec 55. 18.102 / 55. 18.102
libavformat 55. 12.102 / 55. 12.102
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 80.101 / 3. 80.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000003077e0] sample aspect ratio already set to
118:81, ignoring 'pasp' atom (10000:7031)
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file3.mov':
Metadata:
creation_time : 2009-02-12 01:19:22
Duration: 00:00:08.00, start: 0.000000, bitrate: 30338 kb/s
Stream #0:0(eng): Video: dvvideo (dvpp / 0x70707664), yuv411p, 720x576 [SAR
64:45 DAR 16:9], 28800 kb/s, SAR 118:81 DAR 295:162, 25 fps, 25 tbr, 600 tbn, 25
tbc
Metadata:
creation_time : 2009-02-12 01:19:22
handler_name : Apple Alias Data Handler
Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, stereo, s1
6, 1536 kb/s
Metadata:
creation_time : 2009-02-12 01:19:22
handler_name : Apple Alias Data HandlerDuring conversion here is what I see (nothing unusual or no errors) :
ffmpeg version N-54691-g7f4a1fd Copyright (c) 2000-2013 the FFmpeg developers
built on Jul 12 2013 16:31:48 with gcc 4.7.3 (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-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
enable-libxvid --enable-zlib
libavutil 52. 39.100 / 52. 39.100
libavcodec 55. 18.102 / 55. 18.102
libavformat 55. 12.102 / 55. 12.102
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 80.101 / 3. 80.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000024aafe0] sample aspect ratio already set to
118:81, ignoring 'pasp' atom (10000:7031)
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file3.mov':
Metadata:
creation_time : 2009-02-12 01:19:22
Duration: 00:00:08.00, start: 0.000000, bitrate: 30338 kb/s
Stream #0:0(eng): Video: dvvideo (dvpp / 0x70707664), yuv411p, 720x576 [SAR
64:45 DAR 16:9], 28800 kb/s, SAR 118:81 DAR 295:162, 25 fps, 25 tbr, 600 tbn, 25
tbc
Metadata:
creation_time : 2009-02-12 01:19:22
handler_name : Apple Alias Data Handler
Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, stereo, s1
6, 1536 kb/s
Metadata:
creation_time : 2009-02-12 01:19:22
handler_name : Apple Alias Data Handler
No pixel format specified, yuv422p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0000000000347340] using SAR=118/81
[libx264 @ 0000000000347340] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX
[libx264 @ 0000000000347340] profile High 4:2:2, level 2.1, 4:2:2 8-bit
[libx264 @ 0000000000347340] 264 - core 133 r2334 a3ac64b - H.264/MPEG-4 AVC cod
ec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 r
ef=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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_pski
p=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 deci
mate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_
adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=2
5 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=crf mbtree=1 crf=20.0 qcomp=0.6
0 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'file4a.mp4':
Metadata:
encoder : Lavf55.12.102
Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv422p, 4
80x320 [SAR 118:81 DAR 59:27], q=-1--1, 12800 tbn, 25 tbc
Metadata:
creation_time : 2009-02-12 01:19:22
handler_name : Apple Alias Data Handler
Stream #0:1(eng): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 48000
Hz, stereo, s16, 128 kb/s
Metadata:
creation_time : 2009-02-12 01:19:22
handler_name : Apple Alias Data Handler
Stream mapping:
Stream #0:0 -> #0:0 (dvvideo -> libx264)
Stream #0:1 -> #0:1 (pcm_s16be -> libvo_aacenc)
Press [q] to stop, [?] for help
[swscaler @ 00000000024b0740] Warning: data is not aligned! This can lead to a s
peedloss
frame= 78 fps=0.0 q=25.0 size= 128kB time=00:00:02.14 bitrate= 487.8kbits/
frame= 113 fps=109 q=25.0 size= 272kB time=00:00:04.27 bitrate= 520.9kbits/
frame= 145 fps= 94 q=25.0 size= 399kB time=00:00:05.36 bitrate= 609.2kbits/
frame= 182 fps= 89 q=25.0 size= 571kB time=00:00:06.45 bitrate= 725.0kbits/
Starting second pass: moving header on top of the file
frame= 200 fps= 70 q=-1.0 Lsize= 965kB time=00:00:08.00 bitrate= 987.2kbits
/s
video:832kB audio:126kB subtitle:0 global headers:0kB muxing overhead 0.755121%
[libx264 @ 0000000000347340] frame I:1 Avg QP:21.14 size: 39885
[libx264 @ 0000000000347340] frame P:50 Avg QP:21.80 size: 7412
[libx264 @ 0000000000347340] frame B:149 Avg QP:26.25 size: 2960
[libx264 @ 0000000000347340] consecutive B-frames: 0.5% 0.0% 1.5% 98.0%
[libx264 @ 0000000000347340] mb I I16..4: 13.7% 46.7% 39.7%
[libx264 @ 0000000000347340] mb P I16..4: 0.5% 19.7% 3.8% P16..4: 32.8% 11.9
% 14.1% 0.0% 0.0% skip:17.1%
[libx264 @ 0000000000347340] mb B I16..4: 0.0% 5.1% 1.3% B16..8: 14.4% 9.2
% 2.9% direct: 7.3% skip:59.8% L0:42.8% L1:38.3% BI:19.0%
[libx264 @ 0000000000347340] 8x8 transform intra:79.4% inter:71.7%
[libx264 @ 0000000000347340] direct mvs spatial:97.3% temporal:2.7%
[libx264 @ 0000000000347340] coded y,uvDC,uvAC intra: 92.8% 80.1% 26.3% inter: 2
4.2% 28.8% 8.1%
[libx264 @ 0000000000347340] i16 v,h,dc,p: 64% 17% 3% 16%
[libx264 @ 0000000000347340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 1% 33% 4% 3% 8%
2% 35% 2% 11%
[libx264 @ 0000000000347340] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 3% 23% 5% 4% 11%
5% 33% 4% 13%
[libx264 @ 0000000000347340] i8c dc,h,v,p: 38% 40% 14% 8%
[libx264 @ 0000000000347340] Weighted P-Frames: Y:2.0% UV:0.0%
[libx264 @ 0000000000347340] ref P L0: 39.9% 10.0% 25.6% 8.7% 15.3% 0.6%
[libx264 @ 0000000000347340] ref B L0: 76.9% 15.1% 5.7% 2.3%
[libx264 @ 0000000000347340] ref B L1: 96.3% 3.7%
[libx264 @ 0000000000347340] kb/s:851.49 -
FFMPEG Convert from mov, mjpeg codec error
30 août 2011, par vitelI've a problem when i try to convert a .mov to a .webm with ffmpeg... I've no problems from any others video format.
I've enable the Quicktime formats "—enable-zlib" and with the "ffmpeg -formats" command i get .mov files as encode or decode.
When i try to transform a video i get this :
# ffmpeg -i /var/www/static/uploads/usersVideos/cavity0.mov -vcodec mjpeg /var/www/static/uploads/usersVideos/cavity.webm
ffmpeg version N-32159-gc70e852, Copyright (c) 2000-2011 the FFmpeg developers
built on Aug 30 2011 14:16:07 with gcc 4.4.5
configuration: --enable-gpl --enable-libmp3lame --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-libvpx
libavutil 51. 14. 0 / 51. 14. 0
libavcodec 53. 12. 0 / 53. 12. 0
libavformat 53. 10. 0 / 53. 10. 0
libavdevice 53. 3. 0 / 53. 3. 0
libavfilter 2. 37. 0 / 2. 37. 0
libswscale 2. 0. 0 / 2. 0. 0
libpostproc 51. 2. 0 / 51. 2. 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x13b7320] stream 0, error opening alias: path='/matlab_sv13/work/cavity_flow/up500.jpg', dir='cavity_flow', filename='up500.jpg', volume='NONAME', nlvl_from=1, nlvl_to=1**
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x13b7320] Could not find codec parameters (Video: mjpeg (jpeg / 0x6765706A), 434x343, 4762 kb/s)
/var/www/static/uploads/usersVideos/cavity0.mov: could not find codec parameters
[1] 8265 exit 1 ffmpeg -i /var/www/static/uploads/usersVideos/cavity0.mov -vcodec mjpegSomeone has an idea ?