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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 (67)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Possibilité de déploiement en ferme
12 avril 2011, parMediaSPIP peut être installé comme une ferme, avec un seul "noyau" hébergé sur un serveur dédié et utilisé par une multitude de sites différents.
Cela permet, par exemple : de pouvoir partager les frais de mise en œuvre entre plusieurs projets / individus ; de pouvoir déployer rapidement une multitude de sites uniques ; d’éviter d’avoir à mettre l’ensemble des créations dans un fourre-tout numérique comme c’est le cas pour les grandes plate-formes tout public disséminées sur le (...) -
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs
12 avril 2011, parLa manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.
Sur d’autres sites (10814)
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ffmpeg after converting avi to mp4 need wait till video loads in flash player 100% otherwise video is buffering
28 octobre 2013, par Xenos TrojanowiczSo if fixed all issues with my ffmpeg journey now I just need that after converting videos they play in flash player instantly and no need to wait till video loeaded 100% I use :
if ($success_msg) {
$tmp_parts = explode('.', $file['name']);
$ext = array_pop($tmp_parts);
$ext = strtolower($ext);
if($ext == "avi" && $convert_avi == true) {
$convert_source = _VIDEOS_DIR_PATH.$new_name;
$conv_name = substr(md5($file['name'].rand(1,888)), 2, 10).".mp4";
$converted_file = _VIDEOS_DIR_PATH.$conv_name;
$ffmpeg_command = 'ffmpeg -i '.$convert_source.' -acodec libfaac -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 '.$converted_file;
echo exec($ffmpeg_command);
$sql = "UPDATE pm_temp SET url = '".$conv_name."' WHERE url = '".$new_name."' LIMIT 1";
$result = @mysql_query($sql);
unlink($convert_source);
}
echo $success_msg;
}To convert videos
EDIT #1 ffmpeg concole output with faststart function :
root@1tb:~# ffmpeg -i sample.avi -movflags faststart -acodec libfaac -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 consample.mp4
ffmpeg version 0.7.15, Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 22 2013 07:18:58 with gcc 4.4.5
configuration: --enable-libdc1394 --prefix=/usr --extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-avfilter --enable-libdirac --disable-decoder=libdirac --enable-libfreetype --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-libvpx --enable-librtmp --extra-libs=-lgcrypt --disable-altivec --disable-armv5te --disable-armv6 --disable-vis
libavutil 50. 43. 0 / 50. 43. 0
libavcodec 52.123. 0 / 52.123. 0
libavformat 52.111. 0 / 52.111. 0
libavdevice 52. 5. 0 / 52. 5. 0
libavfilter 1. 80. 0 / 1. 80. 0
libswscale 0. 14. 1 / 0. 14. 1
libpostproc 51. 2. 0 / 51. 2. 0
[mp3 @ 0x15389100] Header missing
[mpeg4 @ 0x15386dc0] Invalid and inefficient vfw-avi packed B frames detected
Input #0, avi, from 'sample.avi':
Metadata:
encoder : VirtualDubMod 1.5.10.2 (build 2540/release)
Duration: 00:01:01.81, start: 0.000000, bitrate: 1194 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 640x352 [PAR 1:1 DAR 20:11], 23.98 tbr, 23.98 tbn, 23.98 tbc
Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 128 kb/s
[MOV/3GP/MP4/3G2 muxer @ 0x15386c80] [Eval @ 0x7ffffec71230] Undefined constant or missing '(' in 'faststart'
[MOV/3GP/MP4/3G2 muxer @ 0x15386c80] Unable to parse option value "faststart"
Invalid value 'movflags' for option 'faststart' -
FFmpeg audio dont work in converted videos
28 octobre 2013, par Bar CumberworthNOTICE : when i convert videos via terminal and download them from ftp into pc the audio works fine. I use :
if($ext == "avi" && $convert_avi == true)
{
$convert_source = _VIDEOS_DIR_PATH.$new_name;
$conv_name = substr(md5($file['name'].rand(1,888)), 2, 10).".mp4";
$converted_file = _VIDEOS_DIR_PATH.$conv_name;
$ffmpeg_command = 'ffmpeg -i '.$convert_source.' -acodec libmp3lame -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 '.$converted_file;
echo exec($ffmpeg_command);
$sql = "UPDATE pm_temp SET url = '".$conv_name."' WHERE url = '".$new_name."' LIMIT 1";
$result = @mysql_query($sql);
unlink($convert_source);
}This code to convert avi to mp4 ffmpeg concole output :
root@1tb:~# ffmpeg -i sample.avi -acodec libmp3lame -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 goodsample.mp4
ffmpeg version 0.7.15, Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 22 2013 07:18:58 with gcc 4.4.5
configuration: --enable-libdc1394 --prefix=/usr --extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-avfilter --enable-libdirac --disable-decoder=libdirac --enable-libfreetype --enable-libschroedinger --disable-encoder=libschroedinger - s
libavutil 50. 43. 0 / 50. 43. 0
libavcodec 52.123. 0 / 52.123. 0
libavformat 52.111. 0 / 52.111. 0
libavdevice 52. 5. 0 / 52. 5. 0
libavfilter 1. 80. 0 / 1. 80. 0
libswscale 0. 14. 1 / 0. 14. 1
libpostproc 51. 2. 0 / 51. 2. 0
[mp3 @ 0x191d4100] Header missing
[mpeg4 @ 0x191d1dc0] Invalid and inefficient vfw-avi packed B frames detected
Input #0, avi, from 'sample.avi':
Metadata:
encoder : VirtualDubMod 1.5.10.2 (build 2540/release)
Duration: 00:01:01.81, start: 0.000000, bitrate: 1194 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 640x352 [PAR 1:1 DAR 20:11], 23.98 tbr,
Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 128 kb/s
[buffer @ 0x191d1c80] w:640 h:352 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
[scale @ 0x191d6880] w:640 h:352 fmt:yuv420p -> w:1280 h:720 fmt:yuv420p flags:0
[libx264 @ 0x191ce5a0] Default settings detected, using medium profile
[libx264 @ 0x191ce5a0] using SAR=45/44
[libx264 @ 0x191ce5a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle S
[libx264 @ 0x191ce5a0] profile High, level 3.1
[libx264 @ 0x191ce5a0] 264 - core 118 - H.264/MPEG-4 AVC codec - Copyleft 2003-2 6 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_off 1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_l
Output #0, mp4, to 'goodsample.mp4':
Metadata:
encoder : Lavf52.111.0
Stream #0.0: Video: libx264, yuv420p, 1280x720 [PAR 45:44 DAR 20:11], q=2-31
Stream #0.1: Audio: libmp3lame, 44100 Hz, stereo, s16, 64 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Press [q] to stop, [?] for help
[mp3 @ 0x191d4100] Header missing
Error while decoding stream #0.1
[mpeg4 @ 0x191d1dc0] Invalid and inefficient vfw-avi packed B frames detected
[mp3 @ 0x191d4100] incomplete frame 9467kB time=00:01:00.32 bitrate=1285.5kbits/
Error while decoding stream #0.1
frame= 1852 fps= 20 q=29.0 Lsize= 9652kB time=00:01:01.72 bitrate=1280.9kbits
video:9121kB audio:483kB global headers:0kB muxing overhead 0.499688%
frame I:11 Avg QP:16.78 size: 51456
[libx264 @ 0x191ce5a0] frame P:784 Avg QP:20.81 size: 8954
[libx264 @ 0x191ce5a0] frame B:1057 Avg QP:26.06 size: 1659
[libx264 @ 0x191ce5a0] consecutive B-frames: 22.0% 3.1% 7.5% 67.4%
[libx264 @ 0x191ce5a0] mb I I16..4: 31.1% 59.8% 9.1%
[libx264 @ 0x191ce5a0] mb P I16..4: 1.8% 2.6% 0.2% P16..4: 24.3% 7.0% 4.0
[libx264 @ 0x191ce5a0] mb B I16..4: 0.1% 0.1% 0.0% B16..8: 22.7% 0.8% 0.2
[libx264 @ 0x191ce5a0] 8x8 transform intra:57.0% inter:72.6%
[libx264 @ 0x191ce5a0] coded y,uvDC,uvAC intra: 44.4% 33.3% 10.3% inter: 7.6% 5.
[libx264 @ 0x191ce5a0] i16 v,h,dc,p: 68% 14% 8% 10%
[libx264 @ 0x191ce5a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 14% 27% 5% 7% 7% 6
[libx264 @ 0x191ce5a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 14% 14% 6% 10% 9% 7
[libx264 @ 0x191ce5a0] i8c dc,h,v,p: 67% 13% 17% 3%
[libx264 @ 0x191ce5a0] Weighted P-Frames: Y:1.9% UV:0.4%
[libx264 @ 0x191ce5a0] ref P L0: 62.2% 12.8% 10.3% 14.5% 0.2%
[libx264 @ 0x191ce5a0] ref B L0: 88.1% 5.5% 6.4%
[libx264 @ 0x191ce5a0] ref B L1: 95.7% 4.3%
[libx264 @ 0x191ce5a0] kb/s:1209.03I know there is couple errors tough, but i dont know hot to fix it. Also i would be very thankfull if someone can help reduce video size but is not main problem video weights as original avi but sill.
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FFmpeg audio doesnt work in converted videos but in pc it does
28 octobre 2013, par Dirk SwarzI use :
if($ext == "avi" && $convert_avi == true)
{
$convert_source = _VIDEOS_DIR_PATH.$new_name;
$conv_name = substr(md5($file['name'].rand(1,888)), 2, 10).".mp4";
$converted_file = _VIDEOS_DIR_PATH.$conv_name;
$ffmpeg_command = 'ffmpeg -i '.$convert_source.' -acodec libmp3lame -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 '.$converted_file;
echo exec($ffmpeg_command);
$sql = "UPDATE pm_temp SET url = '".$conv_name."' WHERE url = '".$new_name."' LIMIT 1";
$result = @mysql_query($sql);
unlink($convert_source);
}This code to convert avi to mp4
ffmpeg concole output :root@1tb:~# ffmpeg -i sample.avi -acodec libmp3lame -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 goodsample.mp4
ffmpeg version 0.7.15, Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 22 2013 07:18:58 with gcc 4.4.5
configuration: --enable-libdc1394 --prefix=/usr --extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-avfilter --enable-libdirac --disable-decoder=libdirac --enable-libfreetype --enable-libschroedinger --disable-encoder=libschroedinger - s
libavutil 50. 43. 0 / 50. 43. 0
libavcodec 52.123. 0 / 52.123. 0
libavformat 52.111. 0 / 52.111. 0
libavdevice 52. 5. 0 / 52. 5. 0
libavfilter 1. 80. 0 / 1. 80. 0
libswscale 0. 14. 1 / 0. 14. 1
libpostproc 51. 2. 0 / 51. 2. 0
[mp3 @ 0x191d4100] Header missing
[mpeg4 @ 0x191d1dc0] Invalid and inefficient vfw-avi packed B frames detected
Input #0, avi, from 'sample.avi':
Metadata:
encoder : VirtualDubMod 1.5.10.2 (build 2540/release)
Duration: 00:01:01.81, start: 0.000000, bitrate: 1194 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 640x352 [PAR 1:1 DAR 20:11], 23.98 tbr,
Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 128 kb/s
[buffer @ 0x191d1c80] w:640 h:352 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
[scale @ 0x191d6880] w:640 h:352 fmt:yuv420p -> w:1280 h:720 fmt:yuv420p flags:0
[libx264 @ 0x191ce5a0] Default settings detected, using medium profile
[libx264 @ 0x191ce5a0] using SAR=45/44
[libx264 @ 0x191ce5a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle S
[libx264 @ 0x191ce5a0] profile High, level 3.1
[libx264 @ 0x191ce5a0] 264 - core 118 - H.264/MPEG-4 AVC codec - Copyleft 2003-2 6 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_off 1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_l
Output #0, mp4, to 'goodsample.mp4':
Metadata:
encoder : Lavf52.111.0
Stream #0.0: Video: libx264, yuv420p, 1280x720 [PAR 45:44 DAR 20:11], q=2-31
Stream #0.1: Audio: libmp3lame, 44100 Hz, stereo, s16, 64 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Press [q] to stop, [?] for help
[mp3 @ 0x191d4100] Header missing
Error while decoding stream #0.1
[mpeg4 @ 0x191d1dc0] Invalid and inefficient vfw-avi packed B frames detected
[mp3 @ 0x191d4100] incomplete frame 9467kB time=00:01:00.32 bitrate=1285.5kbits/
Error while decoding stream #0.1
frame= 1852 fps= 20 q=29.0 Lsize= 9652kB time=00:01:01.72 bitrate=1280.9kbits
video:9121kB audio:483kB global headers:0kB muxing overhead 0.499688%
frame I:11 Avg QP:16.78 size: 51456
[libx264 @ 0x191ce5a0] frame P:784 Avg QP:20.81 size: 8954
[libx264 @ 0x191ce5a0] frame B:1057 Avg QP:26.06 size: 1659
[libx264 @ 0x191ce5a0] consecutive B-frames: 22.0% 3.1% 7.5% 67.4%
[libx264 @ 0x191ce5a0] mb I I16..4: 31.1% 59.8% 9.1%
[libx264 @ 0x191ce5a0] mb P I16..4: 1.8% 2.6% 0.2% P16..4: 24.3% 7.0% 4.0
[libx264 @ 0x191ce5a0] mb B I16..4: 0.1% 0.1% 0.0% B16..8: 22.7% 0.8% 0.2
[libx264 @ 0x191ce5a0] 8x8 transform intra:57.0% inter:72.6%
[libx264 @ 0x191ce5a0] coded y,uvDC,uvAC intra: 44.4% 33.3% 10.3% inter: 7.6% 5.
[libx264 @ 0x191ce5a0] i16 v,h,dc,p: 68% 14% 8% 10%
[libx264 @ 0x191ce5a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 14% 27% 5% 7% 7% 6
[libx264 @ 0x191ce5a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 14% 14% 6% 10% 9% 7
[libx264 @ 0x191ce5a0] i8c dc,h,v,p: 67% 13% 17% 3%
[libx264 @ 0x191ce5a0] Weighted P-Frames: Y:1.9% UV:0.4%
[libx264 @ 0x191ce5a0] ref P L0: 62.2% 12.8% 10.3% 14.5% 0.2%
[libx264 @ 0x191ce5a0] ref B L0: 88.1% 5.5% 6.4%
[libx264 @ 0x191ce5a0] ref B L1: 95.7% 4.3%
[libx264 @ 0x191ce5a0] kb/s:1209.03I know there is couple errors tough, but i dont know hot to fix it. Also i would be very thankfull if someone can help reduce video size but is not main problem video weights as original avi but sill.