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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (38)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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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
Sur d’autres sites (7902)
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FFmpeg stuck on frame 0 during time-lapse conversion with `-ss` start time
2 janvier 2021, par rgovI have a long video that I'd like to speed up into a time-lapse. Following the FFmpeg wiki, I came up with this incantation :



ffmpeg -i IMG_0238.MOV -r 60 -ss 00:04:41 -filter:v "setpts=PTS/60.0" -an output.mp4




It should clip off the first few minutes, then create a new 60fps video file at 60x the speed.



Although it spins all my CPU cores up to 100%, the status bar simply shows
frame= 0 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
and never progresses.


The problem seems related to the
-ss 00:04:41
flag, which specifies the start time ; I want to drop the first 4 minutes 41 seconds of source video. When I omit this option, the video conversion succeeds.


Full log follows.





ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 9.1.0 (clang-902.0.30)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
 libavutil 55. 78.100 / 55. 78.100
 libavcodec 57.107.100 / 57.107.100
 libavformat 57. 83.100 / 57. 83.100
 libavdevice 57. 10.100 / 57. 10.100
 libavfilter 6.107.100 / 6.107.100
 libavresample 3. 7. 0 / 3. 7. 0
 libswscale 4. 8.100 / 4. 8.100
 libswresample 2. 9.100 / 2. 9.100
 libpostproc 54. 7.100 / 54. 7.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb59b800000] stream 2, missing mandatory atoms, broken header
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb59b800000] stream 3, missing mandatory atoms, broken header
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IMG_0238.MOV':
 Metadata:
 major_brand : qt 
 minor_version : 0
 compatible_brands: qt 
 creation_time : 2017-04-20T16:25:14.000000Z
 com.apple.quicktime.location.ISO6709: +36.4610+025.3727+123.613/
 com.apple.quicktime.make: Apple
 com.apple.quicktime.model: iPhone 7
 com.apple.quicktime.software: 10.3.1
 com.apple.quicktime.creationdate: 2017-04-20T19:25:13+0300
 Duration: 01:22:45.53, start: -0.000023, bitrate: 44171 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160, 44077 kb/s, 30 fps, 30 tbr, 600 tbn, 1200 tbc (default)
 Metadata:
 rotate : 180
 creation_time : 2017-04-20T16:25:14.000000Z
 handler_name : Core Media Data Handler
 encoder : H.264
 Side data:
 displaymatrix: rotation of -180.00 degrees
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 84 kb/s (default)
 Metadata:
 creation_time : 2017-04-20T16:25:14.000000Z
 handler_name : Core Media Data Handler
 Stream #0:2(und): Data: none (mebx / 0x7862656D) (default)
 Metadata:
 creation_time : 2017-04-20T16:25:14.000000Z
 handler_name : Core Media Data Handler
 Stream #0:3(und): Data: none (mebx / 0x7862656D) (default)
 Metadata:
 creation_time : 2017-04-20T16:25:14.000000Z
 handler_name : Core Media Data Handler
File 'output.mp4' already exists. Overwrite ? [y/N] y
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x7fb59b82b800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fb59b82b800] profile High, level 5.2
[libx264 @ 0x7fb59b82b800] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=-2 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=25 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 'output.mp4':
 Metadata:
 major_brand : qt 
 minor_version : 0
 compatible_brands: qt 
 com.apple.quicktime.creationdate: 2017-04-20T19:25:13+0300
 com.apple.quicktime.location.ISO6709: +36.4610+025.3727+123.613/
 com.apple.quicktime.make: Apple
 com.apple.quicktime.model: iPhone 7
 com.apple.quicktime.software: 10.3.1
 encoder : Lavf57.83.100
 Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 3840x2160, q=-1--1, 60 fps, 15360 tbn, 60 tbc (default)
 Metadata:
 encoder : Lavc57.107.100 libx264
 creation_time : 2017-04-20T16:25:14.000000Z
 handler_name : Core Media Data Handler
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
 displaymatrix: rotation of -0.00 degrees
frame= 0 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x



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FFMPEG-jpg sequence to H.264 generate best result
18 octobre 2015, par ZikiI have a jpg sequence which I need to convert to mp4, and I need to get the best result.
As I understood, I need to supply the ’ffmpeg’ cmdln the following : bitrate, minrate, maxrate and bufsize.
The only thing that I found about calculating the above params, is if I have the final output file size. But considering I want the best quality, I don’t know the final output file size, and I don’t care what it will be.
Of course I have the framerate and the total frames.
Here’s my ffmpeg cmdln :
ffmpeg
-r 24
-start_number 0
-i "C:\pathToSequence\%06d.jpg"
-c copy
-vframes 792
-threads 16
-pix_fmt yuv420p
-c:v libx264
"C:\pathToOutput\result.mp4"The total size of the sequence is 128MB, 792 frames, 24 framerate, resolution 1280x720.
Until now I used to add the following to the ffmpeg cmdln :
-b:v 10000k -minrate 10000k -maxrate 10000k -bufsize 10000k
And if it was 1080p :
-b:v 20000k -minrate 20000k -maxrate 20000k -bufsize 20000k
And I figured that if I put the max value that ffmpeg can handle (2147480) it will generate almost the same result as the above. But I think it’s a bad approach(correct me if I’m wrong).
So if I need to get the best result, how do I calculate it(or I can simply put the max value) ?
Also I would like if you have another helpful flags to add to make the best final result.
—EDIT—
Here’s the updated command :
O:\tools\ffmpeg -framerate 24 -start_number 0 -i "C:\share\localProcess\test\%05d.jpg" -vframes 54 -pix_fmt yuv420p -c:v libx264 -preset veryslow -qp 1 "C:\share\localProcess\result\result.mp4"
And this is the ouptout :
ffmpeg version N-72383-g7206b94 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.9.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
libavutil 54. 26.100 / 54. 26.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 33.101 / 56. 33.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, image2, from 'C:\share\localProcess\test\%05d.jpg':
Duration: 00:00:02.25, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 72:72 DAR 16:9], 24 fps, 24 tbr, 24 tbn, 24 tbc
[swscaler @ 0000000004d6bf60] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0000000004d7a9e0] using SAR=1/1
[libx264 @ 0000000004d7a9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0000000004d7a9e0] profile High, level 5.0
[libx264 @ 0000000004d7a9e0] 264 - core 146 r2538 121396c - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=9 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=8 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=1 ip_ratio=1.40 pb_ratio=1.30 aq=0
Output #0, mp4, to 'C:\share\localProcess\result\result.mp4':
Metadata:
encoder : Lavf56.33.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 12288 tbn, 24 tbc
Metadata:
encoder : Lavc56.41.100 libx264
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
frame= 54 fps= 38 q=-1.0 Lsize= 542kB time=00:00:02.16 bitrate=2050.0kbits/s
video:541kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.251171%
[libx264 @ 0000000004d7a9e0] frame I:1 Avg QP: 0.00 size: 23629
[libx264 @ 0000000004d7a9e0] frame P:22 Avg QP: 1.00 size: 16146
[libx264 @ 0000000004d7a9e0] frame B:31 Avg QP: 2.81 size: 5623
[libx264 @ 0000000004d7a9e0] consecutive B-frames: 16.7% 29.6% 16.7% 0.0% 9.3% 0.0% 13.0% 14.8% 0.0%
[libx264 @ 0000000004d7a9e0] mb I I16..4: 74.9% 20.2% 4.9%
[libx264 @ 0000000004d7a9e0] mb P I16..4: 0.3% 0.1% 1.2% P16..4: 2.7% 0.4% 0.8% 0.2% 0.1% skip:94.2%
[libx264 @ 0000000004d7a9e0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 3.0% 0.4% 0.5% direct: 0.3% skip:95.7% L0:56.0% L1:40.5% BI: 3.5%
[libx264 @ 0000000004d7a9e0] 8x8 transform intra:16.5% inter:18.4%
[libx264 @ 0000000004d7a9e0] direct mvs spatial:54.8% temporal:45.2%
[libx264 @ 0000000004d7a9e0] coded y,uvDC,uvAC intra: 33.9% 49.8% 49.5% inter: 1.3% 2.9% 2.9%
[libx264 @ 0000000004d7a9e0] i16 v,h,dc,p: 79% 13% 4% 4%
[libx264 @ 0000000004d7a9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 22% 48% 2% 4% 6% 3% 1% 2%
[libx264 @ 0000000004d7a9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 13% 43% 5% 6% 4% 5% 5% 6%
[libx264 @ 0000000004d7a9e0] i8c dc,h,v,p: 78% 12% 7% 3%
[libx264 @ 0000000004d7a9e0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000004d7a9e0] ref P L0: 65.7% 2.4% 8.9% 4.5% 2.3% 3.0% 2.8% 3.9% 3.5% 0.8% 0.3% 0.5% 0.3% 0.5% 0.2% 0.3%
[libx264 @ 0000000004d7a9e0] ref B L0: 76.9% 12.0% 3.4% 0.7% 3.6% 0.5% 2.1% 0.4% 0.1% 0.0% 0.1% 0.0% 0.1% 0.1%
[libx264 @ 0000000004d7a9e0] ref B L1: 98.2% 1.8%
[libx264 @ 0000000004d7a9e0] kb/s:1966.80 -
FFMPEG-jpg sequence to H.264 generate best result
18 octobre 2015, par ZikiI have a jpg sequence which I need to convert to mp4, and I need to get the best result.
As I understood, I need to supply the ’ffmpeg’ cmdln the following : bitrate, minrate, maxrate and bufsize.
The only thing that I found about calculating the above params, is if I have the final output file size. But considering I want the best quality, I don’t know the final output file size, and I don’t care what it will be.
Of course I have the framerate and the total frames.
Here’s my ffmpeg cmdln :
ffmpeg
-r 24
-start_number 0
-i "C:\pathToSequence\%06d.jpg"
-c copy
-vframes 792
-threads 16
-pix_fmt yuv420p
-c:v libx264
"C:\pathToOutput\result.mp4"The total size of the sequence is 128MB, 792 frames, 24 framerate, resolution 1280x720.
Until now I used to add the following to the ffmpeg cmdln :
-b:v 10000k -minrate 10000k -maxrate 10000k -bufsize 10000k
And if it was 1080p :
-b:v 20000k -minrate 20000k -maxrate 20000k -bufsize 20000k
And I figured that if I put the max value that ffmpeg can handle (2147480) it will generate almost the same result as the above. But I think it’s a bad approach(correct me if I’m wrong).
So if I need to get the best result, how do I calculate it(or I can simply put the max value) ?
Also I would like if you have another helpful flags to add to make the best final result.
—EDIT—
Here’s the updated command :
O:\tools\ffmpeg -framerate 24 -start_number 0 -i "C:\share\localProcess\test\%05d.jpg" -vframes 54 -pix_fmt yuv420p -c:v libx264 -preset veryslow -qp 1 "C:\share\localProcess\result\result.mp4"
And this is the ouptout :
ffmpeg version N-72383-g7206b94 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.9.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
libavutil 54. 26.100 / 54. 26.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 33.101 / 56. 33.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, image2, from 'C:\share\localProcess\test\%05d.jpg':
Duration: 00:00:02.25, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 72:72 DAR 16:9], 24 fps, 24 tbr, 24 tbn, 24 tbc
[swscaler @ 0000000004d6bf60] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0000000004d7a9e0] using SAR=1/1
[libx264 @ 0000000004d7a9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0000000004d7a9e0] profile High, level 5.0
[libx264 @ 0000000004d7a9e0] 264 - core 146 r2538 121396c - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=9 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=8 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=1 ip_ratio=1.40 pb_ratio=1.30 aq=0
Output #0, mp4, to 'C:\share\localProcess\result\result.mp4':
Metadata:
encoder : Lavf56.33.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 12288 tbn, 24 tbc
Metadata:
encoder : Lavc56.41.100 libx264
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
frame= 54 fps= 38 q=-1.0 Lsize= 542kB time=00:00:02.16 bitrate=2050.0kbits/s
video:541kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.251171%
[libx264 @ 0000000004d7a9e0] frame I:1 Avg QP: 0.00 size: 23629
[libx264 @ 0000000004d7a9e0] frame P:22 Avg QP: 1.00 size: 16146
[libx264 @ 0000000004d7a9e0] frame B:31 Avg QP: 2.81 size: 5623
[libx264 @ 0000000004d7a9e0] consecutive B-frames: 16.7% 29.6% 16.7% 0.0% 9.3% 0.0% 13.0% 14.8% 0.0%
[libx264 @ 0000000004d7a9e0] mb I I16..4: 74.9% 20.2% 4.9%
[libx264 @ 0000000004d7a9e0] mb P I16..4: 0.3% 0.1% 1.2% P16..4: 2.7% 0.4% 0.8% 0.2% 0.1% skip:94.2%
[libx264 @ 0000000004d7a9e0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 3.0% 0.4% 0.5% direct: 0.3% skip:95.7% L0:56.0% L1:40.5% BI: 3.5%
[libx264 @ 0000000004d7a9e0] 8x8 transform intra:16.5% inter:18.4%
[libx264 @ 0000000004d7a9e0] direct mvs spatial:54.8% temporal:45.2%
[libx264 @ 0000000004d7a9e0] coded y,uvDC,uvAC intra: 33.9% 49.8% 49.5% inter: 1.3% 2.9% 2.9%
[libx264 @ 0000000004d7a9e0] i16 v,h,dc,p: 79% 13% 4% 4%
[libx264 @ 0000000004d7a9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 22% 48% 2% 4% 6% 3% 1% 2%
[libx264 @ 0000000004d7a9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 13% 43% 5% 6% 4% 5% 5% 6%
[libx264 @ 0000000004d7a9e0] i8c dc,h,v,p: 78% 12% 7% 3%
[libx264 @ 0000000004d7a9e0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000004d7a9e0] ref P L0: 65.7% 2.4% 8.9% 4.5% 2.3% 3.0% 2.8% 3.9% 3.5% 0.8% 0.3% 0.5% 0.3% 0.5% 0.2% 0.3%
[libx264 @ 0000000004d7a9e0] ref B L0: 76.9% 12.0% 3.4% 0.7% 3.6% 0.5% 2.1% 0.4% 0.1% 0.0% 0.1% 0.0% 0.1% 0.1%
[libx264 @ 0000000004d7a9e0] ref B L1: 98.2% 1.8%
[libx264 @ 0000000004d7a9e0] kb/s:1966.80