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Autres articles (50)
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Changer son thème graphique
22 février 2011, parLe thème graphique ne touche pas à la disposition à proprement dite des éléments dans la page. Il ne fait que modifier l’apparence des éléments.
Le placement peut être modifié effectivement, mais cette modification n’est que visuelle et non pas au niveau de la représentation sémantique de la page.
Modifier le thème graphique utilisé
Pour modifier le thème graphique utilisé, il est nécessaire que le plugin zen-garden soit activé sur le site.
Il suffit ensuite de se rendre dans l’espace de configuration du (...)
Sur d’autres sites (5478)
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Why won't some MP4 videos start streaming until the entire file is downloaded ?
28 janvier 2016, par SujeetI’m working on an application where users upload a video and play it back the browser using jwplayer, jplayer, flowplayer, etc. Some videos play immediately, while others wait until the entire video file has been downloaded.
I’m using ffmpeg to convert the video to mp4 format.
Here is some detailed information about one of the video files I tried.
General
Complete name : 429183132058337290450_AutoFF.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 10.2 MiB
Duration : 24s 333ms
Overall bit rate : 3 501 Kbps
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 24s 333ms
Bit rate mode : Variable
Bit rate : 3 351 Kbps
Width : 1 024 pixels
Height : 560 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.195
Stream size : 9.72 MiB (96%)
Language : Japanese -
Keep timecode in ffmpeg ?
22 novembre 2015, par OlungIm running a script that makes proress 422 proxies for editing in ffmpeg, but the timecode on the files seems to get lost or nulled out.
the parameters im using :
ffmpeg -i file.mov -vcodec prores -profile:v 0 -an file.movis there any way of preserving the timecode from the raw files ?
I’ve also come over ffmbc wich seems be more suited for this, but it’s for linux only. Any way this can be compiled for osx ?
I’m on osx 10.8.4
Thanks in advanced !
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merge 4 videos and put audio in different tracks/channels
4 septembre 2013, par GijsermanI'm pretty new to ffmpeg, so I'm having a bit of a struggle.
I have found a way to merge 4 videos into one side-by-side video grid (2x2) with following code :
ffmpeg -y -i vid1.mp4 -i vid2.mp4 -i vid3.mp4 -i vid4.mp4 -filter_complex "[0:0]pad=iw*2:ih*2[a];[1:0]null[b];[2:0]null[c];[3:0]null[d];[a][b]overlay=w[x];[x][c]overlay=0:h[y];[y][d]overlay=w:h" multiple_input_grid.mp4What I would like to do is distribute the audio of each video as follows
- Audio from vid1 to audiotrack 1 -> left channel
- Audio from vid2 to audiotrack 1 -> right channel
- Audio from vid3 to audiotrack 2 -> left channel
- Audio from vid4 to audiotrack 2 -> right channel
So multiple_input_grid.mp4 will have 2 audio tracks with different left/right audio
Is there a way of doing this in ffmpeg ?
Thanks
The command I'm using (this should have 4 different sources, but has 4x the same) :
C:\Users\Gijs\Documents\ffmpeg-20130820-git-68b63a3-win64-static\bin>ffmpeg -y -
i VIDEO0050.mp4 -i VIDEO0050.mp4 -i VIDEO0050.mp4 -i VIDEO0050.mp4 -filter_compl
ex "[0:0]pad=iw*2:ih*2[a];[1:0]null[b];[2:0]null[c];[3:0]null[d];[a][b]overlay=w
[x];[x][c]overlay=0:h[y];[y][d]overlay=w:h" multiple_input_grid.mp4Output :
ffmpeg version N-55644-g68b63a3 Copyright (c) 2000-2013 the FFmpeg developers
built on Aug 19 2013 20:32:00 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. 42.100 / 52. 42.100
libavcodec 55. 28.100 / 55. 28.100
libavformat 55. 13.103 / 55. 13.103
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 82.100 / 3. 82.100
libswscale 2. 5.100 / 2. 5.100
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VIDEO0050.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2013-08-13 13:32:27
Duration: 00:00:28.35, start: 0.000000, bitrate: 5298 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yu
v420p, 720x1280, 5001 kb/s, SAR 65536:65536 DAR 9:16, 29.40 fps, 30.17 tbr, 90k
tbn, 180k tbc
Metadata:
creation_time : 2013-08-13 13:32:27
handler_name : VideoHandle
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 95 k
b/s
Metadata:
creation_time : 2013-08-13 13:32:27
handler_name : SoundHandle
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'VIDEO0050.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2013-08-13 13:32:27
Duration: 00:00:28.35, start: 0.000000, bitrate: 5298 kb/s
Stream #1:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yu
v420p, 720x1280, 5001 kb/s, SAR 65536:65536 DAR 9:16, 29.40 fps, 30.17 tbr, 90k
tbn, 180k tbc
Metadata:
creation_time : 2013-08-13 13:32:27
handler_name : VideoHandle
Stream #1:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 95 k
b/s
Metadata:
creation_time : 2013-08-13 13:32:27
handler_name : SoundHandle
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'VIDEO0050.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2013-08-13 13:32:27
Duration: 00:00:28.35, start: 0.000000, bitrate: 5298 kb/s
Stream #2:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yu
v420p, 720x1280, 5001 kb/s, SAR 65536:65536 DAR 9:16, 29.40 fps, 30.17 tbr, 90k
tbn, 180k tbc
Metadata:
creation_time : 2013-08-13 13:32:27
handler_name : VideoHandle
Stream #2:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 95 k
b/s
Metadata:
creation_time : 2013-08-13 13:32:27
handler_name : SoundHandle
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from 'VIDEO0050.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2013-08-13 13:32:27
Duration: 00:00:28.35, start: 0.000000, bitrate: 5298 kb/s
Stream #3:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yu
v420p, 720x1280, 5001 kb/s, SAR 65536:65536 DAR 9:16, 29.40 fps, 30.17 tbr, 90k
tbn, 180k tbc
Metadata:
creation_time : 2013-08-13 13:32:27
handler_name : VideoHandle
Stream #3:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 95 k
b/s
Metadata:
creation_time : 2013-08-13 13:32:27
handler_name : SoundHandle
[libx264 @ 0000000002788fc0] using SAR=1/1
[libx264 @ 0000000002788fc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX
[libx264 @ 0000000002788fc0] profile High, level 5.0
[libx264 @ 0000000002788fc0] 264 - core 135 r2345 f0c1c53 - H.264/MPEG-4 AVC cod
ec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 r
ef=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_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=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=2
5 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.6
0 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'multiple_input_grid.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
encoder : Lavf55.13.103
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1440x2
560 [SAR 1:1 DAR 9:16], q=-1--1, 11584 tbn, 30.17 tbc
Stream #0:1(eng): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 44100
Hz, mono, s16, 128 kb/s
Metadata:
creation_time : 2013-08-13 13:32:27
handler_name : SoundHandle
Stream mapping:
Stream #0:0 (h264) -> pad (graph 0)
Stream #1:0 (h264) -> null (graph 0)
Stream #2:0 (h264) -> null (graph 0)
Stream #3:0 (h264) -> null (graph 0)
overlay (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac -> libvo_aacenc)
Press [q] to stop, [?] for help
frame= 19 fps=0.0 q=0.0 size= 0kB time=00:00:00.94 bitrate= 0.4kbits/s
frame= 42 fps= 41 q=0.0 size= 0kB time=00:00:01.64 bitrate= 0.2kbits/s
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frame= 761 fps= 11 q=29.0 size= 22739kB time=00:00:25.33 bitrate=7354.2kbits/
frame= 767 fps= 11 q=29.0 size= 23006kB time=00:00:25.56 bitrate=7372.7kbits/
frame= 774 fps= 11 q=29.0 size= 23232kB time=00:00:25.79 bitrate=7378.2kbits/
frame= 781 fps= 11 q=29.0 size= 23464kB time=00:00:26.02 bitrate=7385.5kbits/
frame= 788 fps= 11 q=29.0 size= 23711kB time=00:00:26.14 bitrate=7430.0kbits/
frame= 792 fps= 11 q=29.0 size= 23853kB time=00:00:26.25 bitrate=7441.6kbits/
frame= 799 fps= 11 q=29.0 size= 24083kB time=00:00:26.60 bitrate=7414.9kbits/
frame= 806 fps= 11 q=29.0 size= 24519kB time=00:00:26.83 bitrate=7483.7kbits/
frame= 813 fps= 11 q=29.0 size= 24713kB time=00:00:27.07 bitrate=7478.3kbits/
frame= 818 fps= 11 q=29.0 size= 24926kB time=00:00:27.18 bitrate=7510.7kbits/
frame= 823 fps= 11 q=29.0 size= 25074kB time=00:00:27.41 bitrate=7491.2kbits/
frame= 830 fps= 11 q=29.0 size= 25314kB time=00:00:27.65 bitrate=7499.2kbits/
frame= 836 fps= 11 q=29.0 size= 25541kB time=00:00:27.76 bitrate=7535.0kbits/
frame= 841 fps= 11 q=29.0 size= 25669kB time=00:00:28.00 bitrate=7510.0kbits/
frame= 850 fps= 11 q=29.0 size= 25971kB time=-577014:-32:-22.-77 bitrate=N/A
frame= 850 fps= 10 q=-1.0 Lsize= 27415kB time=00:00:28.37 bitrate=7915.7kbits
/s dup=21 drop=0
video:26940kB audio:444kB subtitle:0 global headers:0kB muxing overhead 0.113344
%
[libx264 @ 0000000002788fc0] frame I:4 Avg QP:20.92 size:166382
[libx264 @ 0000000002788fc0] frame P:246 Avg QP:23.11 size: 60370
[libx264 @ 0000000002788fc0] frame B:600 Avg QP:26.45 size: 20116
[libx264 @ 0000000002788fc0] consecutive B-frames: 4.2% 1.9% 9.2% 84.7%
[libx264 @ 0000000002788fc0] mb I I16..4: 12.5% 73.1% 14.4%
[libx264 @ 0000000002788fc0] mb P I16..4: 1.9% 3.4% 0.5% P16..4: 55.6% 14.5
% 7.5% 0.0% 0.0% skip:16.6%
[libx264 @ 0000000002788fc0] mb B I16..4: 0.2% 0.3% 0.1% B16..8: 43.8% 3.9
% 0.8% direct: 2.9% skip:48.0% L0:50.7% L1:46.7% BI: 2.6%
[libx264 @ 0000000002788fc0] 8x8 transform intra:60.5% inter:79.4%
[libx264 @ 0000000002788fc0] coded y,uvDC,uvAC intra: 50.1% 56.3% 11.6% inter: 1
4.5% 16.6% 0.1%
[libx264 @ 0000000002788fc0] i16 v,h,dc,p: 35% 23% 12% 31%
[libx264 @ 0000000002788fc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 15% 25% 6% 4%
5% 4% 9% 5%
[libx264 @ 0000000002788fc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 37% 14% 13% 6% 6%
7% 4% 8% 4%
[libx264 @ 0000000002788fc0] i8c dc,h,v,p: 61% 14% 21% 3%
[libx264 @ 0000000002788fc0] Weighted P-Frames: Y:2.8% UV:2.0%
[libx264 @ 0000000002788fc0] ref P L0: 58.0% 6.9% 26.5% 8.4% 0.1%
[libx264 @ 0000000002788fc0] ref B L0: 86.3% 10.7% 3.0%
[libx264 @ 0000000002788fc0] ref B L1: 93.4% 6.6%
[libx264 @ 0000000002788fc0] kb/s:7832.26
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