
Recherche avancée
Médias (1)
-
La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (38)
-
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
Librairies et logiciels spécifiques aux médias
10 décembre 2010, parPour un fonctionnement correct et optimal, plusieurs choses sont à prendre en considération.
Il est important, après avoir installé apache2, mysql et php5, d’installer d’autres logiciels nécessaires dont les installations sont décrites dans les liens afférants. Un ensemble de librairies multimedias (x264, libtheora, libvpx) utilisées pour l’encodage et le décodage des vidéos et sons afin de supporter le plus grand nombre de fichiers possibles. Cf. : ce tutoriel ; FFMpeg avec le maximum de décodeurs et (...)
Sur d’autres sites (4494)
-
correctly escaping text in drawtext filter
6 novembre 2013, par menteAccording to documentation
%{}:,
should be escaped with slash. But when I escape%
the text is not added. There's error message sayingStray % near ')'
. But what does it mean and how I can fix it ? Command and output :$ /usr/bin/ffmpeg -y -i /home/www/255871.mov -af 'aresample=async=1:min_hard_comp=0.100000' -vf 'scale=480:trunc(ow/a/2)*2,transpose=1 [in];movie=watermarks/text-box440.mov,scale=320:55 [bg];[in][bg] overlay=x=20:y=main_h-80,drawtext=fontsize=20:fix_bounds=1:fontfile=Helvetica\\:Style=bold:fontcolor=0xe6b300:text=small kitten \%\):x=30:y=h-80+ascent/2:draw=gte(t\,0)\;lt(t\,5) [out]' -pix_fmt yuv420p -r 24.39 -map_metadata -1 -movflags +faststart -f mp4 -vcodec libx264 -b:v 800k -maxrate 1100k -bufsize 2M -bt 256k -profile:vbaseline -acodec libfdk_aac -ab 64k -ar 44100 -ac 1 /tmp/kitten.mp4
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 15 2013 18:40:14 with gcc 4.4.6 (GCC) 20120305 (Red Hat 4.4.6-4)
configuration: --enable-gpl --enable-libmp3lame --enable-libvo-aacenc --enable-libx264 --enable-version3 --enable-pthreads --enable-libfaac --enable-nonfree --enable-libfdk_a
ac --enable-fontconfig --enable-libfreetype
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/www/255871.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2012-07-17 07:42:35
model : iPhone 3GS
model-rus : iPhone 3GS
encoder : 4.2.1
encoder-rus : 4.2.1
date : 2012-07-17T10:42:35+0300
date-rus : 2012-07-17T10:42:35+0300
make : Apple
make-rus : Apple
Duration: 00:00:09.38, start: 0.000000, bitrate: 790 kb/s
Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 480x360, 720 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 1200 tbc
Metadata:
rotate : 90
creation_time : 2012-07-17 07:42:35
handler_name : Core Media Data Handler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s
Metadata:
creation_time : 2012-07-17 07:42:35
handler_name : Core Media Data Handler
[Parsed_drawtext_5 @ 0x2ae9b00] Using "/usr/share/fonts/default/Type1/n019003l.pfb"
[libx264 @ 0x2ae7d40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x2ae7d40] profile Constrained Baseline, level 2.1
[libx264 @ 0x2ae7d40] 264 - core 130 r2274 c832fe9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 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=0 weightp=0 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=800 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=1100 vbv_bufsize=2000 nal_hrd=none ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/tmp/kitten.mp4':
Metadata:
encoder : Lavf54.63.104
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 360x480, q=-1--1, 800 kb/s, 19512 tbn, 24.39 tbc
Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, s16, 64 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> libx264)
Stream #0:1 -> #0:1 (aac -> libfdk_aac)
Press [q] to stop, [?] for help
[Parsed_drawtext_5 @ 0x2ae9b00] Stray % near ')'
Last message repeated 201 times
Stray % near ')'0.0 q=27.0 size= 480kB time=00:00:07.96 bitrate= 493.4kbits/s dup=0 drop=35
[Parsed_drawtext_5 @ 0x2ae9b00] Stray % near ')'
Last message repeated 77 times
Starting second pass: moving header on top of the file
frame= 231 fps=0.0 q=-1.0 Lsize= 1002kB time=00:00:09.47 bitrate= 866.6kbits/s dup=0 drop=50
video:921kB audio:74kB subtitle:0 global headers:0kB muxing overhead 0.680957%
[libx264 @ 0x2ae7d40] frame I:1 Avg QP:24.43 size: 13264
[libx264 @ 0x2ae7d40] frame P:230 Avg QP:23.72 size: 4041
[libx264 @ 0x2ae7d40] mb I I16..4: 24.8% 0.0% 75.2%
[libx264 @ 0x2ae7d40] mb P I16..4: 2.3% 0.0% 4.8% P16..4: 34.4% 28.8% 9.4% 0.0% 0.0% skip:20.3%
[libx264 @ 0x2ae7d40] coded y,uvDC,uvAC intra: 62.5% 54.2% 4.4% inter: 19.6% 20.3% 0.1%
[libx264 @ 0x2ae7d40] i16 v,h,dc,p: 36% 29% 19% 16%
[libx264 @ 0x2ae7d40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 21% 20% 6% 8% 7% 7% 6% 6%
[libx264 @ 0x2ae7d40] i8c dc,h,v,p: 65% 15% 17% 3%
[libx264 @ 0x2ae7d40] ref P L0: 93.4% 4.3% 2.3%
[libx264 @ 0x2ae7d40] kb/s:796.32 -
Stacking different length videos not working with ffmpeg and -itsoffset
3 avril 2019, par Lucas MadalozzoI developed a video conferencing app that records the video streams separately, and I am now looking for a way to merge them. At the moment I am experimenting with -itsoffset and hstack to stack 2 videos side by side using this command :
ffmpeg \
-itsoffset 17 -i smaller.mp4 \
-itsoffset 0 -i bigger.mp4 \
-filter_complex hstack=inputs=2 \
-c:v libx264 -crf 23 out.mp4The result is a side by side video where both streams remain frozen for 17 seconds then start playing, even the bigger.mp4 video that should start at time 0.
Any help would be really appreciated !
ffmpeg verbose :
ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10+deb8u1)
configuration: --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libx264 --enable-libspeex --enab le-shared --enable-pthreads --enable-libopenjpeg --enable-nonfree --enable-libopus --enable-libvorbis --enable-libvpx
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'smaller.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.20.100
Duration: 00:00:05.16, start: 0.000000, bitrate: 444 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 480x360 [SAR 1:1 DAR 4:3], 330 kb/s, 32 fps, 32 tbr, 16384 tbn, 64 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 103 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'bigger.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.36.100
Duration: 00:00:22.03, start: 0.000000, bitrate: 290 kb/s
Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 480x360 [SAR 1:1 DAR 4:3], 177 kb/s, 32 fps, 32 tbr, 16384 tbn, 64 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 103 kb/s (default)
Metadata:
handler_name : SoundHandler
File 'out.mp4' already exists. Overwrite ? [y/N] y
Stream mapping:
Stream #0:0 (h264) -> hstack:input0 (graph 0)
Stream #1:0 (h264) -> hstack:input1 (graph 0)
hstack (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x206ed00] using SAR=1/1
[libx264 @ 0x206ed00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x206ed00] profile High, level 3.1
[libx264 @ 0x206ed00] 264 - core 146 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=3 lookahead_threads=1 sliced_thre ads=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 scene cut=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 'out.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.20.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 960x360 [SAR 1:1 DAR 8:3], q=-1--1, 32 fps, 16384 tbn, 32 tbc (default)
Metadata:
encoder : Lavc58.35.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc58.35.100 aac
frame= 709 fps=130 q=-1.0 Lsize= 573kB time=00:00:22.12 bitrate= 212.2kbits/s dup=544 drop=0 speed=4.05x
video:478kB audio:81kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.445685%
[libx264 @ 0x206ed00] frame I:3 Avg QP:16.86 size: 38355
[libx264 @ 0x206ed00] frame P:190 Avg QP:18.22 size: 1633
[libx264 @ 0x206ed00] frame B:516 Avg QP:16.23 size: 123
[libx264 @ 0x206ed00] consecutive B-frames: 1.3% 2.8% 6.8% 89.1%
[libx264 @ 0x206ed00] mb I I16..4: 6.6% 54.8% 38.6%
[libx264 @ 0x206ed00] mb P I16..4: 0.4% 1.5% 0.2% P16..4: 8.7% 4.0% 1.9% 0.0% 0.0% skip:83.3%
[libx264 @ 0x206ed00] mb B I16..4: 0.0% 0.1% 0.0% B16..8: 4.2% 0.3% 0.0% direct: 0.0% skip:95.4% L0:37.2% L1:58.9% BI: 4.0%
[libx264 @ 0x206ed00] 8x8 transform intra:66.2% inter:63.4%
[libx264 @ 0x206ed00] coded y,uvDC,uvAC intra: 66.1% 65.6% 21.6% inter: 1.7% 1.1% 0.0%
[libx264 @ 0x206ed00] i16 v,h,dc,p: 21% 26% 11% 42%
[libx264 @ 0x206ed00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 23% 13% 5% 7% 8% 7% 7% 6%
[libx264 @ 0x206ed00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 24% 9% 6% 7% 7% 6% 7% 7%
[libx264 @ 0x206ed00] i8c dc,h,v,p: 46% 25% 20% 9%
[libx264 @ 0x206ed00] Weighted P-Frames: Y:1.1% UV:0.0%
[libx264 @ 0x206ed00] ref P L0: 66.0% 19.4% 12.0% 2.6% 0.0%
[libx264 @ 0x206ed00] ref B L0: 87.2% 11.8% 1.0%
[libx264 @ 0x206ed00] ref B L1: 95.2% 4.8%
[libx264 @ 0x206ed00] kb/s:176.52
[aac @ 0x204aa00] Qavg: 247.398 -
ffmpeg created timelapse won't play on other players than VLC
27 février 2019, par theFeiterI am creating a Timelapse Video with the following ffmpeg command :
ffmpeg -r 24 -start_number 7754 -i IMG_%d.JPG -pix_fmt yuv420p -s 1920x1080 Output.mp4
This works without errors, but when I try to play the .mp4 on my Android Phone it shows an Error : "Unable to play file. Not enough resources"
With the VLC App : "Currently unable to play this video. Stop the other video and try again"
When I put the Video through Handbrake It plays fine on all players.
I tried out changing some ffmpeg options, but nothing helped.
When I compare the output of
ffmpeg -i Output.mp4
from the original with the output from the video out of handbrake it differs only in the video bitrate.Are there any other options I can try to change ?
This is the ffmpeg output :
ffmpeg version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --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-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
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
Input #0, image2, from 'PIC_%d.jpg':
Duration: 00:00:02.24, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 720x1280 [SAR 1:1 DAR 9:16], 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[swscaler @ 0x56059fe911a0] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0x56059f9b4180] using SAR=1/1
[libx264 @ 0x56059f9b4180] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x56059f9b4180] profile High, level 3.1
[libx264 @ 0x56059f9b4180] 264 - core 152 r2854 e9a5903 - 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=2 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 'ttyffmpeg.mp4':
Metadata:
encoder : Lavf57.83.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 720x1280 [SAR 1:1 DAR 9:16], q=-1--1, 2 fps, 16384 tbn, 2 tbc
Metadata:
encoder : Lavc57.107.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame= 56 fps= 11 q=-1.0 Lsize= 5242kB time=00:00:26.50 bitrate=1620.4kbits/s speed=5.38x
video:5241kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.025511%
[libx264 @ 0x56059f9b4180] frame I:9 Avg QP:14.75 size:111662
[libx264 @ 0x56059f9b4180] frame P:35 Avg QP:17.14 size: 90885
[libx264 @ 0x56059f9b4180] frame B:12 Avg QP:17.74 size: 98312
[libx264 @ 0x56059f9b4180] consecutive B-frames: 62.5% 21.4% 16.1% 0.0%
[libx264 @ 0x56059f9b4180] mb I I16..4: 2.6% 96.8% 0.6%
[libx264 @ 0x56059f9b4180] mb P I16..4: 1.0% 93.5% 1.2% P16..4: 1.6% 1.1% 0.4% 0.0% 0.0% skip: 1.1%
[libx264 @ 0x56059f9b4180] mb B I16..4: 0.6% 66.7% 2.1% B16..8: 10.1% 10.6% 3.0% direct: 4.8% skip: 2.0% L0:35.3% L1:34.6% BI:30.0%
[libx264 @ 0x56059f9b4180] 8x8 transform intra:97.3% inter:91.2%
[libx264 @ 0x56059f9b4180] coded y,uvDC,uvAC intra: 94.3% 79.0% 44.3% inter: 77.2% 76.9% 31.3%
[libx264 @ 0x56059f9b4180] i16 v,h,dc,p: 59% 25% 14% 2%
[libx264 @ 0x56059f9b4180] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 18% 42% 3% 2% 2% 4% 4% 6%
[libx264 @ 0x56059f9b4180] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 27% 10% 3% 5% 5% 8% 5% 7%
[libx264 @ 0x56059f9b4180] i8c dc,h,v,p: 40% 24% 29% 7%
[libx264 @ 0x56059f9b4180] Weighted P-Frames: Y:8.6% UV:5.7%
[libx264 @ 0x56059f9b4180] ref P L0: 67.0% 15.7% 14.0% 3.2% 0.1%
[libx264 @ 0x56059f9b4180] ref B L0: 88.0% 11.4% 0.6%
[libx264 @ 0x56059f9b4180] kb/s:1533.05