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Autres articles (79)
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L’agrémenter visuellement
10 avril 2011MediaSPIP est basé sur un système de thèmes et de squelettes. Les squelettes définissent le placement des informations dans la page, définissant un usage spécifique de la plateforme, et les thèmes l’habillage graphique général.
Chacun peut proposer un nouveau thème graphique ou un squelette et le mettre à disposition de la communauté. -
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 (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (7920)
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convert mp4 to m4a using ffmpeg in android
30 novembre 2017, par abdulrahmanI’m trying to add the ability to compress video files in my project. However, I tried to extract the Audio from the original video file using FFMPEG Library before compressing it. The command line was
-i video.mp4 -c:a aac -b:a 160k target.m4aAfter the encoding was done I noticed that the output is still a video file but with a difference in the size. This brought two questions to me and I would like to know their answers.
1 - can the ".m4a" file be considered as a video file ?
2 - can I use this command line to compress video files ?
Best regards
Log after executing the command
<p>
success load
started encoding
ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (GCC)
configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/tempVid.mp4':
Metadata:
major_brand : 3gp4
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2017-11-30 03:22:41
com.android.version: 6.0.1
Duration: 00:00:19.80, start: 0.000000, bitrate: 4246 kb/s
Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 176x144, 4112 kb/s, SAR 1:1 DAR 11:9, 29.94 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
Metadata:
rotate : 270
creation_time : 2017-11-30 03:22:41
handler_name : VideoHandle
Side data:
displaymatrix: rotation of 90.00 degrees
Stream #0:1(eng): Audio: amr_nb (samr / 0x726D6173), 8000 Hz, mono, flt, 12 kb/s (default)
Metadata:
creation_time : 2017-11-30 03:22:41
handler_name : SoundHandle
[libx264 @ 0xb5bc4400] using SAR=1/1
[libx264 @ 0xb5bc4400] using cpu capabilities: none!
[libx264 @ 0xb5bc4400] profile High, level 1.1
[libx264 @ 0xb5bc4400] 264 - core 148 - 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=5 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=25 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
[aac @ 0xb5bc4c00] Too many bits 20480.000000 > 6144 per frame requested, clamping to max
Output #0, ipod, to '/storage/emulated/0/target.m4a':
Metadata:
major_brand : 3gp4
minor_version : 0
compatible_brands: isom3gp4
com.android.version: 6.0.1
encoder : Lavf57.25.100
Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 144x176 [SAR 1:1 DAR 9:11], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
Metadata:
handler_name : VideoHandle
creation_time : 2017-11-30 03:22:41
encoder : Lavc57.24.102 libx264
Side data:
unknown side data type 10 (24 bytes)
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 48 kb/s (default)
Metadata:
creation_time : 2017-11-30 03:22:41
handler_name : SoundHandle
encoder : Lavc57.24.102 aac
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (amr_nb (amrnb) -> aac (native))
Press [q] to stop, [?] for help
frame= 47 fps=0.0 q=0.0 size= 0kB time=00:00:00.76 bitrate= 0.5kbits/s speed=1.53x
frame= 69 fps= 68 q=29.0 size= 12kB time=00:00:01.79 bitrate= 56.3kbits/s speed=1.77x
frame= 88 fps= 57 q=29.0 size= 22kB time=00:00:02.30 bitrate= 76.5kbits/s speed=1.49x
frame= 110 fps= 54 q=29.0 size= 31kB time=00:00:02.81 bitrate= 89.9kbits/s speed=1.37x
frame= 118 fps= 45 q=29.0 size= 34kB time=00:00:03.84 bitrate= 71.5kbits/s speed=1.47x
frame= 144 fps= 46 q=29.0 size= 44kB time=00:00:03.84 bitrate= 93.7kbits/s speed=1.23x
frame= 150 fps= 41 q=29.0 size= 48kB time=00:00:04.86 bitrate= 80.6kbits/s speed=1.34x
frame= 178 fps= 42 q=29.0 size= 62kB time=00:00:04.86 bitrate= 105.2kbits/s speed=1.16x
frame= 185 fps= 39 q=29.0 size= 67kB time=00:00:05.88 bitrate= 93.4kbits/s speed=1.25x
frame= 206 fps= 40 q=29.0 size= 78kB time=00:00:05.88 bitrate= 108.5kbits/s speed=1.13x
frame= 214 fps= 37 q=29.0 size= 84kB time=00:00:06.91 bitrate= 99.8kbits/s speed=1.21x
frame= 238 fps= 38 q=29.0 size= 100kB time=00:00:06.91 bitrate= 118.0kbits/s speed=1.11x
frame= 249 fps= 37 q=29.0 size= 106kB time=00:00:07.93 bitrate= 109.3kbits/s speed=1.18x
frame= 268 fps= 37 q=29.0 size= 119kB time=00:00:08.19 bitrate= 119.1kbits/s speed=1.13x
frame= 279 fps= 36 q=29.0 size= 127kB time=00:00:08.96 bitrate= 116.4kbits/s speed=1.16x
frame= 298 fps= 36 q=29.0 size= 140kB time=00:00:09.21 bitrate= 124.4kbits/s speed=1.11x
frame= 308 fps= 35 q=29.0 size= 149kB time=00:00:09.98 bitrate= 122.3kbits/s speed=1.14x
frame= 328 fps= 35 q=29.0 size= 162kB time=00:00:10.24 bitrate= 129.5kbits/s speed= 1.1x
frame= 343 fps= 35 q=29.0 size= 172kB time=00:00:10.88 bitrate= 129.2kbits/s speed=1.11x
frame= 358 fps= 35 q=29.0 size= 180kB time=00:00:11.90 bitrate= 124.0kbits/s speed=1.15x
frame= 387 fps= 36 q=29.0 size= 195kB time=00:00:11.90 bitrate= 134.1kbits/s speed=1.09x
frame= 398 fps= 35 q=29.0 size= 202kB time=00:00:12.92 bitrate= 127.9kbits/s speed=1.14x
frame= 418 fps= 35 q=29.0 size= 213kB time=00:00:13.31 bitrate= 131.3kbits/s speed=1.12x
frame= 432 fps= 35 q=29.0 size= 222kB time=00:00:13.95 bitrate= 130.3kbits/s speed=1.13x
frame= 448 fps= 35 q=29.0 size= 230kB time=00:00:14.59 bitrate= 129.0kbits/s speed=1.13x
frame= 469 fps= 35 q=29.0 size= 242kB time=00:00:14.97 bitrate= 132.5kbits/s speed=1.11x
frame= 478 fps= 34 q=29.0 size= 247kB time=00:00:15.87 bitrate= 127.6kbits/s speed=1.14x
frame= 509 fps= 35 q=29.0 size= 259kB time=00:00:16.00 bitrate= 132.8kbits/s dup=1 drop=0 speed=1.11x
frame= 525 fps= 35 q=29.0 size= 266kB time=00:00:17.02 bitrate= 127.8kbits/s dup=1 drop=0 speed=1.13x
frame= 539 fps= 35 q=29.0 size= 271kB time=00:00:17.79 bitrate= 124.5kbits/s dup=1 drop=0 speed=1.15x
frame= 564 fps= 35 q=29.0 size= 285kB time=00:00:18.04 bitrate= 129.4kbits/s dup=1 drop=0 speed=1.13x
frame= 574 fps= 35 q=29.0 size= 290kB time=00:00:19.07 bitrate= 124.8kbits/s dup=1 drop=0 speed=1.15x
frame= 590 fps= 35 q=29.0 size= 297kB time=00:00:19.45 bitrate= 125.2kbits/s dup=1 drop=0 speed=1.14x
frame= 594 fps= 33 q=-1.0 Lsize= 328kB time=00:00:19.84 bitrate= 135.2kbits/s dup=1 drop=0 speed= 1.1x
video:246kB audio:70kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.381132%
[libx264 @ 0xb5bc4400] frame I:3 Avg QP:22.61 size: 4103
[libx264 @ 0xb5bc4400] frame P:230 Avg QP:25.04 size: 851
[libx264 @ 0xb5bc4400] frame B:361 Avg QP:28.82 size: 121
[libx264 @ 0xb5bc4400] consecutive B-frames: 1.2% 40.7% 37.9% 20.2%
[libx264 @ 0xb5bc4400] mb I I16..4: 4.0% 49.8% 46.1%
[libx264 @ 0xb5bc4400] mb P I16..4: 0.1% 0.3% 0.2% P16..4: 52.0% 27.1% 15.1% 0.0% 0.0% skip: 5.3%
[libx264 @ 0xb5bc4400] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 43.4% 2.1% 0.3% direct: 1.7% skip:52.5% L0:39.3% L1:55.4% BI: 5.3%
[libx264 @ 0xb5bc4400] 8x8 transform intra:51.7% inter:57.7%
[libx264 @ 0xb5bc4400] coded y,uvDC,uvAC intra: 81.9% 93.5% 80.4% inter: 11.9% 40.0% 17.4%
[libx264 @ 0xb5bc4400] i16 v,h,dc,p: 11% 25% 7% 57%
[libx264 @ 0xb5bc4400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 7% 20% 16% 6% 11% 5% 20% 6% 9%
[libx264 @ 0xb5bc4400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 22% 14% 5% 10% 7% 19% 5% 7%
[libx264 @ 0xb5bc4400] i8c dc,h,v,p: 61% 18% 10% 10%
[libx264 @ 0xb5bc4400] Weighted P-Frames: Y:24.3% UV:22.2%
[libx264 @ 0xb5bc4400] ref P L0: 57.6% 14.3% 16.8% 8.9% 2.3%
[libx264 @ 0xb5bc4400] ref B L0: 76.3% 19.1% 4.6%
[libx264 @ 0xb5bc4400] ref B L1: 91.9% 8.1%
[libx264 @ 0xb5bc4400] kb/s:101.58
[aac @ 0xb5bc4c00] Qavg: 64130.668
success ffmpeg
end encoding
ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (GCC)
configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/tempVid.mp4':
Metadata:
major_brand : 3gp4
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2017-11-30 03:22:41
com.android.version: 6.0.1
Duration: 00:00:19.80, start: 0.000000, bitrate: 4246 kb/s
Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 176x144, 4112 kb/s, SAR 1:1 DAR 11:9, 29.94 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
Metadata:
rotate : 270
creation_time : 2017-11-30 03:22:41
handler_name : VideoHandle
Side data:
displaymatrix: rotation of 90.00 degrees
Stream #0:1(eng): Audio: amr_nb (samr / 0x726D6173), 8000 Hz, mono, flt, 12 kb/s (default)
Metadata:
creation_time : 2017-11-30 03:22:41
handler_name : SoundHandle
[libx264 @ 0xb5bc4400] using SAR=1/1
[libx264 @ 0xb5bc4400] using cpu capabilities: none!
[libx264 @ 0xb5bc4400] profile High, level 1.1
[libx264 @ 0xb5bc4400] 264 - core 148 - 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=5 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=25 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
[aac @ 0xb5bc4c00] Too many bits 20480.000000 > 6144 per frame requested, clamping to max
Output #0, ipod, to '/storage/emulated/0/target.m4a':
Metadata:
major_brand : 3gp4
minor_version : 0
compatible_brands: isom3gp4
com.android.version: 6.0.1
encoder : Lavf57.25.100
Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 144x176 [SAR 1:1 DAR 9:11], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
Metadata:
handler_name : VideoHandle
creation_time : 2017-11-30 03:22:41
encoder : Lavc57.24.102 libx264
Side data:
unknown side data type 10 (24 bytes)
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 48 kb/s (default)
Metadata:
creation_time : 2017-11-30 03:22:41
handler_name : SoundHandle
encoder : Lavc57.24.102 aac
Stream mapping:
Stream #0:0 -> #0:0 (h26
</p> -
Cortex-A7 instruction cycle timings
15 mai 2014, par Mans — ARMThe Cortex-A7 ARM core is a popular choice in low-power and low-cost designs. Unfortunately, the public TRM does not include instruction timing information. It does reveal that execution is in-order which makes measuring the throughput and latency for individual instructions relatively straight-forward. The table below lists the measured issue cycles … Continue reading
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Including FFMPEG library with lambda
6 janvier 2017, par Alex KonetchyI’ve been trying to get this working for sometime. All the I am trying to do is include the ffmpeg binary with my lambda funciton. If anyone could show me how I am doing this wrong I would greatly appreciate it. Everything works fine on my machine. It outputs nothing when I upload to lambda. Here’s my javascript :
var Q = require('q');
var path = require('path');
var exec = require('child_process').exec;
var ffmpeg = require('ffmpeg-static');
process.env['PATH'] = process.env['PATH'] + ':/tmp/:' + process.env['LAMBDA_TASK_ROOT']
exports.handler = function(event, context, callback) {
var cmd = 'bin/version ' + ffmpeg.path.substring(0,(ffmpeg.path.length-6));
exec(cmd, function(error, stdout, stderr) { console.log(stdout); callback(null, stdout); });
}Here is bin/version
#!/bin/bash
ffmpegpath="$1";
export PATH=$PATH:$ffmpegpath;
cd $ffmpegpath;
ffmpeg -version;I want it to display the ffmpeg version so I know that it is installed. If I run that code on my machine it does just that. When I upload to lambda this is all I get in the console.
START RequestId : 0ed80a4f-d3a6-11e6-b907-753f3d9d401c Version : $LATEST
2017-01-06T00:21:28.531Z 0ed80a4f-d3a6-11e6-b907-753f3d9d401c
END RequestId : 0ed80a4f-d3a6-11e6-b907-753f3d9d401c
REPORT RequestId : 0ed80a4f-d3a6-11e6-b907-753f3d9d401c Duration : 128.48 ms Billed Duration : 200 ms Memory Size : 128 MB Max Memory Used : 35 MBHow do I include the ffmpeg library so that I can start doing some image conversion ? Thanks.
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