Recherche avancée
Médias (1)
-
The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (37)
-
Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
-
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 (...) -
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 (5282)
-
Set protocol-level metadata in AVFormatContext any time a packet is read.
1er août 2014, par Andrew Stone -
Why can't I set "aspect ratio" by ffmpeg -aspect ? [on hold]
7 août 2014, par yasiI want to generate an h264 (avc) file by a jpg file. I generated it by command :
- ffmpeg -f image2 -i img%d.jpg -vcodec libx264 sample.h264
- mv avatar.h264 sample-320.avc
the img%d.jpg is 0.jpg, 1.jpg, 2.jpg ... 24.jpg, all of which is the same, resolution is 320x180
When sample.avc is generated, I checked information of it by ESEyE, it’s like below.
As you can see, the resolution is correct, but aspect ratio is weird since original jpg sequence is 320x180, whose aspect ratio is 16:9. So, I tried to keep 16:9 by the command below
- ffmpeg -r 25 -f image2 -i img%d.jpg -vcodec libx264 -profile:v baseline -level:v 1.1 -aspect "16:9" sample.h264
However, it doesn’t work, the generated avc aspect ratio is still 5x3.
How can I keep aspect ratio of 16:9 ?
P.S.
I guess h264 miminal block is 16x16, and avc width could be padded as 192 (16 * 12), so aspect ratio is 320:192 = 5:3. -
ffmpeg HLS creation and segmentation results in "cannot decode" on iPad
5 mai 2014, par jt_dylanI have the following code that plays on Mac Safari :
<video controls="controls" width="480" height="270">
<source src="http://d1ckv7o9k6o3x9.cloudfront.net/d54cfa01-eff2-4e86-946e-dc8b2ee4a7e8/media/ hls/MVI_5927.m3u8">
</source></video>The url can be cut/pasted into the browser and works also but neither this code nor the url works in Windows Safari or iPad. Specifically on iPad I receive a cannot decode error. On Mac I have Quicktime installed so I tried that on Windows with no luck. The link that can be play on Mac is below.
http://d1ckv7o9k6o3x9.cloudfront.net/d54cfa01-eff2-4e86-946e-dc8b2ee4a7e8/media/hls/MVI_5927.m3u8
Browser Versions of software :
Mac Safari : Version 7.0.3 (9537.75.14) (works)
Windows Safari : Version 5.1.7 (7534.7.2) (doesn’t work - blank screen)
iPad Safari : ios Version 7.1.1 (doesn’t work - cannot decode)Here is how I’m creating my mp4 (lgpl)
I’m creating an mp4 with this command :
ffmpeg -i input.mov c:v mpeg4 q:v 1 test.mp4I’m creating the hls using ffmpeg lpgl with this command :
ffmpegcmd -re -y -i test.mp4 -map 0 -f segment -segment_list test.m3u8 -segment_list_flags +live -segment_time 1 -segment_list_type m3u8 test%05d.ts 2>&1Now this works in Mac Safari with Quicktime installed but results in "cannot decode" if I try the url from ipad Safari.
I then tried with libx264 to create the mp4 as h.264 with aac and then copy to mpeg2 container as follows :
ffmpeg -i test.mov -c:v libx264 -c:a libfdk_aac -preset slower -b:a 240k test.slower.mp4
ffmpeg -i test.slower.mp4 -vcodec copy -f mpegts -bsf h264_mp4toannexb test.slower.ts
ffmpeg -re -y -i test.slower.ts -map 0 -f segment -segment_list test.slower.m3u8 -segment_list_flags +live -segment_time 1 -segment_list_type m3u8 test.slower.%05d.tsThis still produces the same results. Any idea what is wrong here ?
Any help is much appreciated.
Regards,
jt_dylanOutput from libx264 commands below :
ffmpeg -i test.mov -c:v libx264 -c:a libfdk_aac -preset slower -b:a 240k test.slower.mp4
ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
built on May 4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tst/MVI_1716.MOV':
Metadata:
major_brand : qt
minor_version : 537331968
compatible_brands: qt CAEP
creation_time : 2012-07-21 05:17:44
Duration: 00:00:20.06, start: 0.000000, bitrate: 34471 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuvj420p(pc, smpte170m), 1920x1080, 33663 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 48k tbc (default)
Metadata:
creation_time : 2012-07-21 05:17:44
Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16, 768 kb/s (default)
Metadata:
creation_time : 2012-07-21 05:17:44
No pixel format specified, yuvj420p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x39ae9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x39ae9e0] profile High, level 5.0
[libx264 @ 0x39ae9e0] 264 - core 142 r2 ac76440 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=8 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=9 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=23 scenecut=40 intra_refresh=0 rc_lookahead=60 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 'tstconv/MVI_1716.slower.mp4':
Metadata:
major_brand : qt
minor_version : 537331968
compatible_brands: qt CAEP
encoder : Lavf55.37.102
Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p, 1920x1080, q=-1--1, 24k tbn, 23.98 tbc (default)
Metadata:
creation_time : 2012-07-21 05:17:44
Stream #0:1(eng): Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 48000 Hz, mono, s16, 240 kb/s (default)
Metadata:
creation_time : 2012-07-21 05:17:44
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> libx264)
Stream #0:1 -> #0:1 (pcm_s16le -> libfdk_aac)
Press [q] to stop, [?] for help
frame= 481 fps=1.5 q=-1.0 Lsize= 18428kB time=00:00:20.07 bitrate=7519.9kbits/s
video:17827kB audio:589kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.060811%
[libx264 @ 0x39ae9e0] frame I:3 Avg QP:23.31 size:113718
[libx264 @ 0x39ae9e0] frame P:135 Avg QP:25.06 size: 56912
[libx264 @ 0x39ae9e0] frame B:343 Avg QP:27.13 size: 29825
[libx264 @ 0x39ae9e0] consecutive B-frames: 1.2% 4.2% 20.6% 74.0%
[libx264 @ 0x39ae9e0] mb I I16..4: 20.0% 53.3% 26.6%
[libx264 @ 0x39ae9e0] mb P I16..4: 9.7% 22.8% 5.4% P16..4: 41.0% 8.6% 5.4% 0.1% 0.0% skip: 7.0%
[libx264 @ 0x39ae9e0] mb B I16..4: 3.3% 7.2% 2.0% B16..8: 40.7% 9.8% 1.7% direct: 6.3% skip:29.0% L0:49.6% L1:44.7% BI: 5.7%
[libx264 @ 0x39ae9e0] 8x8 transform intra:58.9% inter:70.2%
[libx264 @ 0x39ae9e0] direct mvs spatial:99.4% temporal:0.6%
[libx264 @ 0x39ae9e0] coded y,uvDC,uvAC intra: 58.6% 46.9% 7.3% inter: 23.9% 20.2% 0.2%
[libx264 @ 0x39ae9e0] i16 v,h,dc,p: 10% 64% 14% 12%
[libx264 @ 0x39ae9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 7% 50% 10% 3% 4% 3% 8% 4% 12%
[libx264 @ 0x39ae9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 4% 64% 5% 2% 3% 2% 6% 2% 10%
[libx264 @ 0x39ae9e0] i8c dc,h,v,p: 35% 53% 9% 3%
[libx264 @ 0x39ae9e0] Weighted P-Frames: Y:11.1% UV:4.4%
[libx264 @ 0x39ae9e0] ref P L0: 47.8% 12.2% 15.8% 6.8% 5.7% 4.2% 4.3% 2.6% 0.6% 0.0%
[libx264 @ 0x39ae9e0] ref B L0: 76.8% 10.5% 5.1% 2.9% 2.2% 1.5% 0.9%
[libx264 @ 0x39ae9e0] ref B L1: 94.6% 5.4%
[libx264 @ 0x39ae9e0] kb/s:7279.24
ffmpeg -i test.slower.mp4 -vcodec copy -f mpegts -bsf h264_mp4toannexb test.slower.ts
ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
built on May 4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tstconv/MVI_1716.slower.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.37.102
Duration: 00:00:20.11, start: 0.042667, bitrate: 7508 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920x1080, 7279 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 240 kb/s (default)
Metadata:
handler_name : SoundHandler
[swscaler @ 0x367c0c0] deprecated pixel format used, make sure you did set range correctly
Output #0, segment, to 'MVI_1716.slower.%05d.ts':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.37.102
Stream #0:0(eng): Video: mpeg2video, yuv420p, 1920x1080, q=2-31, 200 kb/s, 90k tbn, 23.98 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 384 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg2video)
Stream #0:1 -> #0:1 (aac -> mp2)
Press [q] to stop, [?] for help
frame= 482 fps= 24 q=31.0 Lsize=N/A time=00:00:20.12 bitrate=N/A dup=1 drop=0
video:8293kB audio:944kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 195032183209984.000000%
ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
built on May 4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tstconv/MVI_1716.slower.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.37.102
Duration: 00:00:20.11, start: 0.042667, bitrate: 7508 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920x1080, 7279 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 240 kb/s (default)
Metadata:
handler_name : SoundHandler
File 'tstconv/MVI_1716.slower.ts' already exists. Overwrite ? [y/N] y
Output #0, mpegts, to 'tstconv/MVI_1716.slower.ts':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.37.102
Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuvj420p, 1920x1080, q=2-31, 7279 kb/s, 23.98 fps, 90k tbn, 23.98 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 384 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (aac -> mp2)
Press [q] to stop, [?] for help
frame= 481 fps=0.0 q=-1.0 Lsize= 20334kB time=00:00:20.12 bitrate=8276.6kbits/s
video:17827kB audio:944kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 8.325850%
ffmpeg -re -y -i test.slower.ts -map 0 -f segment -segment_list test.slower.m3u8 -segment_list_flags +live -segment_time 1 -segment_list_type m3u8 test.slower.%05d.ts
ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
built on May 4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 52. 81.100 / 52. 81.100
libavcodec 55. 60.103 / 55. 60.103
libavformat 55. 37.102 / 55. 37.102
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpegts, from 'tstconv/MVI_1716.slower.ts':
Duration: 00:00:20.11, start: 1.430733, bitrate: 8282 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc), 1920x1080, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, mono, s16p, 373 kb/s
[swscaler @ 0x1fe9ae0] deprecated pixel format used, make sure you did set range correctly
Output #0, segment, to 'MVI_1716.slower.%05d.ts':
Metadata:
encoder : Lavf55.37.102
Stream #0:0: Video: mpeg2video, yuv420p, 1920x1080, q=2-31, 200 kb/s, 90k tbn, 23.98 tbc
Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 384 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg2video)
Stream #0:1 -> #0:1 (mp2 -> mp2)
Syndiquer tout le site
