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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 (96)
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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 (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Les tâches Cron régulières de la ferme
1er décembre 2010, parLa gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
Le super Cron (gestion_mutu_super_cron)
Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)
Sur d’autres sites (12436)
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FFMPEG Detect volume of streaming (PHP)
22 septembre 2013, par Mohamed MostafaI spent last 4 days trying to acheive that but with no luck,
I am trying to detect volume of streaming link or save audio file, using the FFmpeg I tried every single command line.
ffmpeg -f lavfi -i amovie=sample1.aac,volumedetect -f null -y test.txt
Output
There was a problem! Array (
[0] => FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
[1] => built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6)
[2] => configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab
[3] => libavutil 50.15. 1 / 50.15. 1
[4] => libavcodec 52.72. 2 / 52.72. 2
[5] => libavformat 52.64. 2 / 52.64. 2
[6] => libavdevice 52. 2. 0 / 52. 2. 0
[7] => libavfilter 1.19. 0 / 1.19. 0
[8] => libswscale 0.11. 0 / 0.11. 0
[9] => libpostproc 51. 2. 0 / 51. 2. 0
[10] => Unknown input format: 'lavf'
)Basically my problem now is :
Unknown input format: 'lavf'
Any help please
My FFMpeg Version is
[root@bea ~]# ffmpeg -formats | grep lavfi
FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6)
configuration : —prefix=/usr —libdir=/usr/lib64 —shlibdir=/usr/lib64 —mandir=/usr/share/man —incdir=/usr/include —disable-avisynth —extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector —param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' —enable-avfilter —enable-avfilter-lavf —enable-libdc1394 —enable-libdirac —enable-libfaac —enable-libfaad —enable-libfaadbin —enable-libgsm —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-librtmp —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-libx264 —enable-gpl —enable-nonfree —enable-postproc —enable-pthreads —enable-shared —enable-swscale —enable-vdpau —enable-version3 —enable-x11grab
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.19. 0 / 1.19. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0From PHP info
ffmpeg
ffmpeg-php version 0.6.0-svn
ffmpeg-php built on Sep 21 2013 15:38:20
ffmpeg-php gd support enabled
ffmpeg libavcodec version Lavc52.72.2
ffmpeg libavformat version Lavf52.64.2
ffmpeg swscaler version SwS0.11.0Directive Local Value Master Value
ffmpeg.allow_persistent 0 0
ffmpeg.show_warnings 0 0 -
ffmpeg options for playing in iPad WebView with tag
19 septembre 2013, par Waynn LueI'm trying to convert a video to be played in a tag in a WebView in iOS. I've tried the options at this link but it still doesn't seem to play. I've found videos that do successfully play, though, so I'm sure it's possible, I just can't seem to get any working. Here's the ffmpeg -i output for something that works.
Here's what I tried from the wiki :
ffmpeg -i {filename} -acodec aac -ac 2 -strict experimental -ab 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b 1200k -f mp4 -threads 0 {filename}.ipad.mp4
But the file doesn't play in the WebView.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.m4v' : Metadata : major_brand : M4V minor_version : 1 compatible_brands : M4V M4A mp42isom creation_time : 2005-12-20 20:20:15 Duration : 00:01:25.50, start : 0.000000, bitrate : 209 kb/s Stream #0:0(eng) : Audio : aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 115 kb/s Metadata : creation_time : 2005-12-20 20:20:15 handler_name : Apple Sound Media Handler Stream #0:1(eng) : Video : h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x240, 90 kb/s, 10 fps, 10 tbr, 1k tbn, 2k tbc Metadata : creation_time : 2005-12-20 20:20:15 handler_name : Apple Video Media Handler
And here's the output for my input file :
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cheerfulness.mov' : Metadata : major_brand : qt minor_version : 537199360 compatible_brands : qt creation_time : 2013-07-31 00:47:22 Duration : 00:00:06.00, start : 0.000000, bitrate : 120849 kb/s Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1200x1920, 120823 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 60k tbc Metadata : creation_time : 2013-07-31 00:48:33 handler_name : Apple Alias Data Handler
edit : Here's the full output of the command :
wlue :$ ffmpeg -i cheerfulness.mov -acodec aac -ac 2 -strict experimental -ab 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b 1200k -f mp4 -threads 0 output.ipad.mp4 ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers built on Sep 18 2013 18:44:15 with Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn) configuration : —prefix=/usr/local/Cellar/ffmpeg/1.2.1 —enable-shared —enable-pthreads —enable-gpl —enable-version3 —enable-nonfree —enable-hardcoded-tables —enable-avresample —enable-vda —cc=cc —host-cflags= —host-ldflags= —enable-libx264 —enable-libfaac —enable-libmp3lame —enable-libxvid 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 'cheerfulness.mov' : Metadata : major_brand : qt minor_version : 537199360 compatible_brands : qt creation_time : 2013-07-31 00:47:22 Duration : 00:00:06.01, start : 0.000000, bitrate : 120849 kb/s Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1200x1920, 120823 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 60k tbc Metadata : creation_time : 2013-07-31 00:48:33 handler_name : Apple Alias Data Handler Please use -b:a or -b:v, -b is ambiguous [libx264 @ 0x7fa67401fa00] frame MB size (75x120) > level limit (1620) [libx264 @ 0x7fa67401fa00] DPB size (5 frames, 17280000 bytes) > level limit (0 frames, 3110400 bytes) [libx264 @ 0x7fa67401fa00] MB rate (269730) > level limit (40500) [libx264 @ 0x7fa67401fa00] using cpu capabilities : MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX [libx264 @ 0x7fa67401fa00] profile Constrained Baseline, level 3.0 [libx264 @ 0x7fa67401fa00] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options : cabac=0 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 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=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=1200 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=10000 vbv_bufsize=10000 nal_hrd=none ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to 'output.ipad.mp4' : Metadata : major_brand : qt minor_version : 537199360 compatible_brands : qt encoder : Lavf54.63.104 Stream #0:0(eng) : Video : h264 ([33][0][0][0] / 0x0021), yuv420p, 1200x1920, q=-1—1, 1200 kb/s, 30k tbn, 29.97 tbc Metadata : creation_time : 2013-07-31 00:48:33 handler_name : Apple Alias Data Handler Stream mapping : Stream #0:0 -> #0:0 (h264 -> libx264) Press [q] to stop, [?] for help frame= 180 fps= 16 q=-1.0 Lsize= 828kB time=00:00:06.00 bitrate=1129.2kbits/s video:826kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.177851% [libx264 @ 0x7fa67401fa00] frame I:2 Avg QP:32.23 size : 20942 [libx264 @ 0x7fa67401fa00] frame P:178 Avg QP:41.03 size : 4515 [libx264 @ 0x7fa67401fa00] mb I I16..4 : 90.1% 0.0% 9.9% [libx264 @ 0x7fa67401fa00] mb P I16..4 : 6.8% 0.0% 0.0% P16..4 : 16.8% 0.6% 0.2% 0.0% 0.0% skip:75.5% [libx264 @ 0x7fa67401fa00] final ratefactor : 37.56 [libx264 @ 0x7fa67401fa00] coded y,uvDC,uvAC intra : 1.2% 16.4% 2.1% inter : 0.1% 3.4% 0.1% [libx264 @ 0x7fa67401fa00] i16 v,h,dc,p : 49% 23% 4% 24% [libx264 @ 0x7fa67401fa00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu : 13% 8% 36% 8% 12% 9% 8% 4% 2% [libx264 @ 0x7fa67401fa00] i8c dc,h,v,p : 88% 6% 5% 1% [libx264 @ 0x7fa67401fa00] ref P L0 : 47.7% 22.0% 16.7% 5.7% 7.9% [libx264 @ 0x7fa67401fa00] kb/s:1126.21
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How to extract images from webm video using ffmpeg
23 octobre 2013, par Angelo N.I need to extract a set of images from a webm video using ffmpeg (version 0.9.2).
I currently use this script :./ffmpeg -i video.webm -r 1 -f image2 image-%04d.jpg
but I have this error
ffmpeg version 0.9.2, Copyright (c) 2000-2012 the FFmpeg developers
built on Oct 23 2013 12:18:47 with gcc 4.6.3
configuration: --extra-libs=-ldl --disable-shared --enable-static --disable-everything --disable-ffplay --disable-ffprobe --disable-ffserver --disable-avfilter --disable-avdevice --enable-libvpx --enable-protocol=file --enable-encoder=mjpeg --enable-encoder=libvpx --enable-decoder=libvpx --enable-decoder=mjpeg --enable-parser=mjpeg --enable-muxer=webm --enable-muxer=image2 --enable-muxer=mjpeg --enable-muxer=avi --enable-demuxer=image2 --enable-demuxer=mjpeg --enable-demuxer=avi
libavutil 51. 32. 0 / 51. 32. 0
libavcodec 53. 42. 4 / 53. 42. 4
libavformat 53. 24. 2 / 53. 24. 2
libswscale 2. 1. 0 / 2. 1. 0
/home/username/Desktop/out.webm: Invalid data found when processing inputI found that in ffmpeg there isn't a webm demuxer and you can check it typing
./configuration --list-demuxers
So I'm asking why ffmpeg do not support a webm demuxer which is used by libvpx (used for example in youtube by Google) .
It sounds strange... doesn't it ?