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Autres articles (108)
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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 (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)
Sur d’autres sites (7949)
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avfilter/vf_v360 : speed up fisheye input calculation
29 février 2020, par Paul B Mahol -
Is there a way to tell ffmpeg to speed up a video so its duration matches the duration of the audio ?
7 février 2020, par Qix - MONICA WAS MISTREATEDJust as the title describes ; is there a simple way to tell ffmpeg to take in video and audio tracks and to speed up (or slow down, I suppose) the video so that it matches the duration of the audio ? I can calculate PTS values but have no idea how to do it in an automated way.
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How to speed up creating video mosaic with ffmpeg
7 janvier 2020, par DALER RAHIMOVI’m looking to speed up ffmpeg pipeline in some way (camera configuration, different filters or any other ideas would be appreciated).
I have a device that captures videos streams and later creates mosaic video view from 4 cameras. The main issue I’m having is that it’s taking too long to create mosaic video. There is no GPU on the device that could be used to accelerate the process so I’m left with camera configurations (Hikvision).
Here is what I have so far
About 160 sec on Intel J-1900 :
- 5 min video files,
- 640*480 resolution,
- h264 encoding,
- 10 fps,
- 1024 max bitrate,
- 10 I-frame interval,Command that I’m using :
ffmpeg -y -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 \
-filter_complex " \
color=c=black:size=1280x720 [base]; \
[0:v] setpts=PTS-STARTPTS, scale=640x360 [cam0]; \
[1:v] setpts=PTS-STARTPTS, scale=640x360 [cam1]; \
[2:v] setpts=PTS-STARTPTS, scale=640x360 [cam2]; \
[3:v] setpts=PTS-STARTPTS, scale=640x360 [cam3]; \
[base][cam0] overlay=shortest=1:x=0:y=0 [z1]; \
[z1][cam1] overlay=shortest=1:x=640:y=0 [z2]; \
[z2][cam2] overlay=shortest=1:x=0:y=360 [z3]; \
[z3][cam3] overlay=shortest=1:x=640:y=360 \
" \
-an -c:v libx264 -x264-params keyint=10 \
-movflags faststart -preset fast -nostats -loglevel quiet -r 10.000000 mosaic.mp4Thanks
Here is full output as requested
ffmpeg -y -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 \
> -filter_complex " \
> color=c=black:size=1280x720 [base]; \
> [0:v] setpts=PTS-STARTPTS, scale=640x360 [cam0]; \
> [1:v] setpts=PTS-STARTPTS, scale=640x360 [cam1]; \
> [2:v] setpts=PTS-STARTPTS, scale=640x360 [cam2]; \
> [3:v] setpts=PTS-STARTPTS, scale=640x360 [cam3]; \
> [base][cam0] overlay=shortest=1:x=0:y=0 [z1]; \
> [z1][cam1] overlay=shortest=1:x=640:y=0 [z2]; \
> [z2][cam2] overlay=shortest=1:x=0:y=360 [z3]; \
> [z3][cam3] overlay=shortest=1:x=640:y=360 \
> " \
> -an -c:v libx264 -x264-params keyint=10 \
> -movflags faststart -preset fast -nostats -r 10.000000 mosaic.mp4
ffmpeg version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg -y -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -filter_complex " \
color=c=black:size=1280x720 [base]; \
[0:v] setpts=PTS-STARTPTS, scale=640x360 [cam0]; \
[1:v] setpts=PTS-STARTPTS, scale=640x360 [cam1]; \
[2:v] setpts=PTS-STARTPTS, scale=640x360 [cam2]; \
[3:v] setpts=PTS-STARTPTS, scale=640x360 [cam3]; \
[base][cam0] overlay=shortest=1:x=0:y=0 [z1]; \
[z1][cam1] overlay=shortest=1:x=640:y=0 [z2]; \
[z2][cam2] overlay=shortest=1:x=0:y=360 [z3]; \
[z3][cam3] overlay=shortest=1:x=640:y=360 \
" -an -c:v libx264 -x264-params keyint=10 -movflags faststart -preset fast -r 10.000000 mosaic.mp4
ffmpeg version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1578324600-1-stitched.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Duration: 00:05:00.07, start: 0.000000, bitrate: 96 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x480, 95 kb/s, 10 fps, 25 tbr, 10240 tbn, 20 tbc (default)
Metadata:
handler_name : VideoHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '1578324600-1-stitched.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Duration: 00:05:00.07, start: 0.000000, bitrate: 96 kb/s
Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x480, 95 kb/s, 10 fps, 25 tbr, 10240 tbn, 20 tbc (default)
Metadata:
handler_name : VideoHandler
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '1578324600-1-stitched.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Duration: 00:05:00.07, start: 0.000000, bitrate: 96 kb/s
Stream #2:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x480, 95 kb/s, 10 fps, 25 tbr, 10240 tbn, 20 tbc (default)
Metadata:
handler_name : VideoHandler
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from '1578324600-1-stitched.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Duration: 00:05:00.07, start: 0.000000, bitrate: 96 kb/s
Stream #3:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x480, 95 kb/s, 10 fps, 25 tbr, 10240 tbn, 20 tbc (default)
Metadata:
handler_name : VideoHandler
[libx264 @ 0x171c9e0] using SAR=1/1
[libx264 @ 0x171c9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x171c9e0] profile High, level 3.1
[libx264 @ 0x171c9e0] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=6 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=1 keyint=10 keyint_min=1 scenecut=40 intra_refresh=0 rc_lookahead=10 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 'mosaic.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 10 fps, 10240 tbn, 10 tbc (default)
Metadata:
encoder : Lavc56.60.100 libx264
Stream mapping:
Stream #0:0 (h264) -> setpts
Stream #1:0 (h264) -> setpts
Stream #2:0 (h264) -> setpts
Stream #3:0 (h264) -> setpts
overlay -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
[mp4 @ 0x1730600] Starting second pass: moving the moov atom to the beginning of the filerop=4497
frame= 3002 fps= 17 q=-1.0 Lsize= 51052kB time=00:05:00.00 bitrate=1394.1kbits/s dup=0 drop=4498
video:51017kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.068308%
[libx264 @ 0x171c9e0] frame I:301 Avg QP:15.80 size:154257
[libx264 @ 0x171c9e0] frame P:959 Avg QP:21.69 size: 5486
[libx264 @ 0x171c9e0] frame B:1742 Avg QP:22.73 size: 315
[libx264 @ 0x171c9e0] consecutive B-frames: 22.0% 0.0% 5.8% 72.2%
[libx264 @ 0x171c9e0] mb I I16..4: 9.7% 31.0% 59.4%
[libx264 @ 0x171c9e0] mb P I16..4: 0.6% 0.7% 0.2% P16..4: 14.5% 2.8% 2.4% 0.0% 0.0% skip:78.7%
[libx264 @ 0x171c9e0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 2.7% 0.3% 0.0% direct: 1.4% skip:95.5% L0:25.9% L1:73.3% BI: 0.9%
[libx264 @ 0x171c9e0] 8x8 transform intra:31.8% inter:43.5%
[libx264 @ 0x171c9e0] coded y,uvDC,uvAC intra: 83.2% 85.2% 69.5% inter: 3.0% 6.3% 0.7%
[libx264 @ 0x171c9e0] i16 v,h,dc,p: 35% 21% 8% 36%
[libx264 @ 0x171c9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 42% 10% 3% 2% 3% 6% 4% 5%
[libx264 @ 0x171c9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 33% 9% 6% 5% 5% 7% 5% 6%
[libx264 @ 0x171c9e0] i8c dc,h,v,p: 44% 29% 20% 7%
[libx264 @ 0x171c9e0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x171c9e0] ref P L0: 93.8% 6.2%
[libx264 @ 0x171c9e0] ref B L0: 91.7% 8.3%
[libx264 @ 0x171c9e0] ref B L1: 89.3% 10.7%
[libx264 @ 0x171c9e0] kb/s:1392.16
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