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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (87)
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Organiser par catégorie
17 mai 2013, parDans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...) -
Récupération d’informations sur le site maître à l’installation d’une instance
26 novembre 2010, parUtilité
Sur le site principal, une instance de mutualisation est définie par plusieurs choses : Les données dans la table spip_mutus ; Son logo ; Son auteur principal (id_admin dans la table spip_mutus correspondant à un id_auteur de la table spip_auteurs)qui sera le seul à pouvoir créer définitivement l’instance de mutualisation ;
Il peut donc être tout à fait judicieux de vouloir récupérer certaines de ces informations afin de compléter l’installation d’une instance pour, par exemple : récupérer le (...) -
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 (...)
Sur d’autres sites (9022)
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Attempting to compile FFmpeg 4.2.3 statically for Windows 10 (x86_64), but binaries asks for missing DLLs
29 mai 2020, par ExpectatorI am using Msys MinGW (x86_64) and pulled a snapshot of the latest major release of FFmpeg off of their website. Here is my
./configure
options. I plan to use the binaries on both the computer that I compiled it on, and other Windows computers that I own.


./configure --enable-libaom --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --enable-libgme --enable-libmfx --enable-libkvazaar --enable-libmp3lame --enable-libilbc --enable-libvpx --enable-libmodplug --enable-version3 --enable-nonfree --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-libfdk-aac --enable-libopenh264 --enable-libopenjpeg --enable-nvenc --enable-nvdec --enable-cuda --enable-cuvid --enable-libtwolame --enable-vapoursynth --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxavs2 --enable-gpl --enable-static --disable-shared




Output of configure script (pastebin)



Output of
uname -a
(in Msys)


MINGW64_NT-10.0-18362 <scrubbed> 3.1.4-340.x86_64 2020-05-22 08:28 UTC x86_64 Msys
</scrubbed>



The issue that I'm facing is that despite passing the options
--enable-static
and--disable-shared
, the executables generated still requirelibchromaprint.dll
,libfdk-aac-2.dll
, andlibgme.dll
to run. What I expected was that FFmpeg would execute independently of any DLL files since I passed those options to./configure
.

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FFMPEG Add thumbnail to video [duplicate]
18 mai 2020, par james-normanadd a thumbnail to my video file. I have the code that I have compiled with the help of other people from StackOverflow and I have one bit left to finish it off and that is to add a line of code to add video thumbnail.



you will see some weird text in command like targggget these are words that get replaced by the software so ignore it.

app.path\ffmpeg gets replaced with file-path/ffmpeg

targgggett\targ3et.mp4 file-path/xx.mp4

targgggett\targetimgee - output is example C :\Users\username\Desktop\vidz\New folder\images\demo.png


"app.path\ffmpeg" -y -i "targgggett\targ3et.mp4" -loop 1 -framerate 30000/1001 -t 5 -i "targgggett\targetimgee" -t 0.5 -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -filter_complex "[0:a]atempo=1.0,pan=stereo|c0code>



i want to add a video thumbnail using targgggett\targetimgee and set video thumbnail only



"app.path\ffmpeg" -y -i "targgggett\targ3et.mp4" -loop 1 -framerate 30000/1001 -t 5 -i "targgggett\targetimgee" -t 0.5 -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -filter_complex "[0:a]atempo=1.0,pan=stereo|c0code>



i get error



ffmpeg version git-2020-04-13-59e3a9
a Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 9.3.1 (GCC) 20200328
 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --
enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx 
--enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-li
bspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
 libavutil 
 56. 42.102 / 56. 42.102
 libavcodec 58. 78.102 / 58. 78.102
 libavformat 58. 42.100 / 58. 42.100
 libavdevice 58. 9.103 / 58. 9.103
 libavfilter 7. 77.101 / 7. 77.101
 libswscale 5. 6.101 / 5. 6.101
 libswresample 
 3. 6.100 / 3. 6.100
 libpostproc 55. 6.100 / 55. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\user\Desktop\vidz\New folder\55.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 0
 compatible_brands: isommp42

 creation_time : 2020-03-26T08:17:13.000000Z
 Duration: 00:04:29.12, start: 0.000000, bitrate: 1402 kb/s
 Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 1270 kb/s, 29.97 fps, 29.97 tbr,
 30k tbn, 59.94 tbc (default)
 Metadata:
 creation_time : 2020-03-26T08:17:13.000000Z
 handler_name : ISO Media file produced by Google Inc. Created on: 03/26/2020.
 Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, 
stereo, fltp, 127 kb/s (default)
 Metadata:
 creation_time : 2020-03-26T08:17:13.000000Z
 handler_name : ISO Media file produced by Google Inc. Created on: 03/26/2020.
Input #1, image2, from 'C:\Users\user\Desktop\vidz\New folder\\ima
ges\20191002_132728.jpg':
 Duration: 00:00:00.03, start: 0.000000, bitrate: 1223868 kb/s
 Stream #1:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 4032x3024, 29.97 tbr, 29.97 tbn, 29.97 tbc
Input #2, lavfi, from 'anullsrc=channel
_layout=stereo:sample_rate=44100':
 Duration: N/A, start: 0.000000, bitrate: 705 kb/s
 Stream #2:0: Audio: pcm_u8, 44100 Hz, stereo, u8, 705 kb/s
Option b:v (video bitrate (please use -b:v)) cannot be applied to input url C:\Users\user\Desktop\vidz\
New folder\\images\20191002_132728.jpg -- you are trying to apply an input option to an output file or vice versa. Move this option before the file it belongs to.
Error parsing options for input file C:\Users\user\Desktop\vidz\New folder\\images\20191002_
132728.jpg.
Error opening input files: Invalid argument



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The SSIM values calculated using FFMPEG are not what I expected
18 mai 2020, par fd-alexerI'm trying to encode an m2ts (MPEG-2 Transport Stream) file to mp4 (H.264) and get the ssim value.

I did get some SSIM values, but the results were contrary to my expectations.


Are there wrong command options for ffmpeg ?



Encoding and SSIM calculation commands



# encode
$ ffmpeg -hide_banner -fflags +discardcorrupt -i input.m2ts \
 -c:v libx264 -crf <crf> -preset:v medium \
 -c:a copy -bsf:a aac_adtstoasc \
 output_ff_crf-<crf>.mp4

# calculate ssim
$ ffmpeg -hide_banner -i <a> -i <b> \
 -lavfi "[0:v]settb=AVTB,setpts=PTS-STARTPTS[main];[1:v]settb=AVTB,setpts=PTS-STARTPTS[ref];[main][ref]ssim" \
 -f null -
</b></a></crf></crf>



The results of the SSIM



(a) A=input.m2ts, B=input.m2ts, ssim=0.973266
(b) A=input.m2ts, B=output_ff_crf-0.mp4, ssim=0.813347
(c) A=input.m2ts, B=output_ff_crf-30.mp4, ssim=0.819897
(d) A=output_ff_crf-0.mp4, B=output_ff_crf-0.mp4, ssim=1.000000
(e) A=output_ff_crf-0.mp4, B=output_ff_crf-30.mp4, ssim=0.972911




- 

- (d)(e) : These are what I expected.
- (a) : The files are the same, but ssim≠1.
- (b)(c) : SSIMs with CRF=0 and CRF=30 have almost the same value, although the image quality is different.









In the case of HandBrakeCLI



To determine if there was a problem with input.m2ts, I ran HandBrakeCLI with almost the same parameters as ffmpeg.



# encode
HandBrakeCLI --verbose --format av_mp4 --encoder x264 --quality <crf> --x264-preset medium \
 --aencoder copy \
 --input input.m2ts --output output_hb_crf-<crf>.mp4

# calculate ssim (same as ffmpeg)
$ ffmpeg -hide_banner -i <a> -i <b> \
 -lavfi "[0:v]settb=AVTB,setpts=PTS-STARTPTS[main];[1:v]settb=AVTB,setpts=PTS-STARTPTS[ref];[main][ref]ssim" \
 -f null -
</b></a></crf></crf>



(b') A=input.m2ts, B=output_hb_crf-0.mp4, ssim=0.999999
(c') A=input.m2ts, B=output_hb_crf-30.mp4, ssim=0.972886
(d') A=output_hb_crf-0.mp4, B=output_hb_crf-0.mp4, ssim=1.000000
(e') A=output_hb_crf-0.mp4, B=output_hb_crf-30.mp4, ssim=0.972886




It's all as I expected. (although A is not ssim=1.0) 
Therefore, I don't see a problem with input.m2ts.



Informations about video files and tools



Results of the ffprobe



input.m2ts



[mpeg2video @ 0x5655577c1680] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 0x5655577bd080] start time for stream 2 is not set in estimate_timings_from_pts
[mpegts @ 0x5655577bd080] PES packet size mismatch
Input #0, mpegts, from 'input.m2ts':
 Duration: 00:30:02.68, start: 39593.392600, bitrate: 19019 kb/s
 Program 211
 Stream #0:0[0x140]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
 Stream #0:1[0x141]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 255 kb/s
 Stream #0:2[0x138]: Data: bin_data ([6][0][0][0] / 0x0006)
Unsupported codec with id 100359 for input stream 2




output_ff_crf-0.mp4



Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output_ff_crf-0.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.83.100
 Duration: 00:30:02.67, start: 0.000000, bitrate: 109301 kb/s
 Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 109040 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 252 kb/s (default)
 Metadata:
 handler_name : SoundHandler




output_hb_crf-0.mp4



Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output_hb_crf-0.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 creation_time : 2020-05-17T06:22:06.000000Z
 encoder : HandBrake 1.1.0 2018042400
 Duration: 00:30:02.22, start: 0.000000, bitrate: 109661 kb/s
 Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 109405 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
 Metadata:
 creation_time : 2020-05-17T06:22:06.000000Z
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 252 kb/s (default)
 Metadata:
 creation_time : 2020-05-17T06:22:06.000000Z
 handler_name : Stereo




Tools



version



- 

- ffmpeg : 3.4.6-0ubuntu0.18.04.1
- HandBrakeCLI : 1.1.0







ldd



$ ldd /usr/bin/ffmpeg
...
libx264.so.152 => /usr/lib/x86_64-linux-gnu/libx264.so.152 (0x00007efbf1f33000)
...

$ ldd /usr/bin/HandBrakeCLI
...
libx264.so.152 => /usr/lib/x86_64-linux-gnu/libx264.so.152 (0x00007efbfb38f000)
...




ffmpeg and HandBrakeCLI are using the same libx264.