
Recherche avancée
Médias (1)
-
Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (56)
-
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...) -
Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)
Sur d’autres sites (3092)
-
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 ?
-
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 -
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