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Autres articles (47)
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La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...)
Sur d’autres sites (6745)
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MLT Framework. How to speed up video ?
16 septembre 2016, par user2455079Need to speed up video with MLT.
I can do it with ffmpeg :-filter:v "setpts=0.5*PTS"
But what about MLT ?
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wtv : Speed up wtv index creation
29 janvier 2016, par popcornmixwtv : Speed up wtv index creation
The index creation is O(N^2) with number of entries (typically thousands).
On a Pi this can take more than 60 seconds to execute for a recording of a few hours.By replacing with an O(N) loop, this takes virtually zero time
Liked-by : Paul B Mahol <onemda@gmail.com>
Reviewed-by : Peter Ross <pross@xvid.org>
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc> -
FFmpeg Android Video cropping speed and perfomance [duplicate]
5 octobre 2016, par kishore jethavaThis question already has an answer here :
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Fast Video Compression on Android
2 answers
FFmpeg
15 seconds video takes 15 seconds to crop.
How can we reduce this cropping time with command or some other tricks ?I have refereed this question but didn’t helped.
Here is code
final FFmpeg ffmpeg = FFmpeg.getInstance(getActivity());
try {
ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
@Override
public void onStart() {}
@Override
public void onFailure() {}
@Override
public void onSuccess() {
Log.i(TAG, "FFMPEG Success ");
try {
/*Logic for cropping the original video to a square video depending of the orientation of the original video*/
//Command for cropping square video
String[] cmd = {"-i", "path/source.mp4", "-vf", "scale=720:ih*720/iw, crop="720:720:0:0, "-preset","ultrafast","-strict","experimental","-vcodec","libx264","-preset","ultrafast","path/destination.mp4"};
// Execute cropping of video
ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
}
@Override
public void onProgress(String message) {
Log.i("Square", "progress : " +message);
}
@Override
public void onFailure(String message) {
Log.i("Square", "total fail : " + message);
}
@Override
public void onSuccess(String message) {
Log.i("Square", "Cropped video created.");
}
@Override
public void onFinish() {
}
});
} catch (FFmpegCommandAlreadyRunningException e) {
// Handle if FFmpeg is already running
}
}
});
} catch (FFmpegNotSupportedException e) {
// Handle if FFmpeg is not supported by device
}Logcat
D/FFmpeg: Running publishing updates method
I/Square: progress : ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
I/Square: progress : built with gcc 4.8 (GCC)
I/Square: progress : 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=
I/Square: progress : libavutil 55. 17.103 / 55. 17.103
I/Square: progress : libavcodec 57. 24.102 / 57. 24.102
I/Square: progress : libavformat 57. 25.100 / 57. 25.100
I/Square: progress : libavdevice 57. 0.101 / 57. 0.101
I/Square: progress : libavfilter 6. 31.100 / 6. 31.100
I/Square: progress : libswscale 4. 0.100 / 4. 0.100
I/Square: progress : libswresample 2. 0.101 / 2. 0.101
I/Square: progress : libpostproc 54. 0.100 / 54. 0.100
I/Square: progress : Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Content/source.mp4':
I/Square: progress : Metadata:
I/Square: progress : major_brand : mp42
I/Square: progress : minor_version : 0
I/Square: progress : compatible_brands: isommp42
I/Square: progress : creation_time : 2016-10-05 05:19:12
I/Square: progress : com.android.version: 6.0.1
I/Square: progress : Duration: 00:00:15.91, start: 0.000000, bitrate: 6174 kb/s
I/Square: progress : Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 326 kb/s, 1.59 fps, 30 tbr, 90k tbn, 15 tbc (default)
I/Square: progress : Metadata:
I/Square: progress : rotate : 90
I/Square: progress : creation_time : 2016-10-05 05:19:12
I/Square: progress : handler_name : VideoHandle
I/Square: progress : Side data:
I/Square: progress : displaymatrix: rotation of -90.00 degrees
I/Square: progress : Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 12 kb/s (default)
I/Square: progress : Metadata:
I/Square: progress : creation_time : 2016-10-05 05:19:12
I/Square: progress : handler_name : SoundHandle
I/Square: progress : [libx264 @ 0xf7544400] using SAR=1/1
I/Square: progress : [libx264 @ 0xf7544400] using cpu capabilities: none!
I/Square: progress : [libx264 @ 0xf7544400] profile Constrained Baseline, level 3.1
I/Square: progress : [libx264 @ 0xf7544400] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 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=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
I/Square: progress : [aac @ 0xf7544c00] Too many bits 8832.000000 > 6144 per frame requested, clamping to max
I/Square: progress : Output #0, mp4, to '/storage/emulated/0/Content/destination.mp4':
I/Square: progress : Metadata:
I/Square: progress : major_brand : mp42
I/Square: progress : minor_version : 0
I/Square: progress : compatible_brands: isommp42
I/Square: progress : com.android.version: 6.0.1
I/Square: progress : encoder : Lavf57.25.100
I/Square: progress : Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 638x638 [SAR 1:1 DAR 1:1], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
I/Square: progress : Metadata:
I/Square: progress : handler_name : VideoHandle
I/Square: progress : creation_time : 2016-10-05 05:19:12
I/Square: progress : encoder : Lavc57.24.102 libx264
I/Square: progress : Side data:
I/Square: progress : unknown side data type 10 (24 bytes)
I/Square: progress : Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 8000 Hz, mono, fltp, 48 kb/s (default)
I/Square: progress : Metadata:
I/Square: progress : creation_time : 2016-10-05 05:19:12
I/Square: progress : handler_name : SoundHandle
I/Square: progress : encoder : Lavc57.24.102 aac
I/Square: progress : Stream mapping:
I/Square: progress : Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (libx264))
I/Square: progress : Stream #0:1 -> #0:1 (aac (native) -> aac (native))
I/Square: progress : Press [q] to stop, [?] for help
I/Square: progress : frame= 0 fps=0.0 q=0.0 size= 0kB time=00:00:05.24 bitrate= 0.1kbits/s speed=10.2x
I/Square: progress : frame= 0 fps=0.0 q=0.0 size= 0kB time=00:00:10.24 bitrate= 0.1kbits/s speed= 10x
I/Square: progress : frame= 0 fps=0.0 q=0.0 size= 19kB time=00:00:14.84 bitrate= 10.5kbits/s speed=9.73x
I/Square: progress : frame= 8519 fps=205 q=23.0 size= 3734kB time=00:04:43.53 bitrate= 107.9kbits/s dup=8516 drop=0 speed=6.84x
I/Square: progress : frame= 8537 fps=203 q=25.0 size= 3734kB time=00:04:44.13 bitrate= 107.7kbits/s dup=8516 drop=0 speed=6.77x
I/Square: progress : frame= 8556 fps=201 q=25.0 size= 3735kB time=00:04:44.76 bitrate= 107.4kbits/s dup=8516 drop=0 speed= 6.7x
I/Square: progress : frame= 8575 fps=199 q=25.0 size= 3843kB time=00:04:45.40 bitrate= 110.3kbits/s dup=8516 drop=0 speed=6.64x
I/Square: progress : frame= 8594 fps=198 q=25.0 size= 3844kB time=00:04:46.03 bitrate= 110.1kbits/s dup=8516 drop=0 speed=6.58x
I/Square: progress : frame= 8614 fps=196 q=25.0 size= 3844kB time=00:04:46.70 bitrate= 109.8kbits/s dup=8516 drop=0 speed=6.52x
I/Square: progress : frame= 8633 fps=194 q=25.0 size= 3844kB time=00:04:47.33 bitrate= 109.6kbits/s dup=8516 drop=0 speed=6.45x
I/Square: progress : frame= 8652 fps=192 q=25.0 size= 3844kB time=00:04:47.96 bitrate= 109.4kbits/s dup=8516 drop=0 speed= 6.4x
I/Square: progress : frame= 8672 fps=190 q=26.0 size= 3844kB time=00:04:48.63 bitrate= 109.1kbits/s dup=8516 drop=0 speed=6.34x
I/Square: progress : frame= 8691 fps=189 q=25.0 size= 3845kB time=00:04:49.26 bitrate= 108.9kbits/s dup=8516 drop=0 speed=6.28x
I/Square: progress : frame= 8711 fps=187 q=26.0 size= 3845kB time=00:04:49.93 bitrate= 108.6kbits/s dup=8516 drop=0 speed=6.23x
I/Square: progress : frame= 8731 fps=185 q=26.0 size= 3845kB time=00:04:50.60 bitrate= 108.4kbits/s dup=8516 drop=0 speed=6.17x
I/Square: progress : frame= 8750 fps=184 q=26.0 size= 3845kB time=00:04:51.23 bitrate= 108.2kbits/s dup=8516 drop=0 speed=6.12x
I/Square: progress : frame= 8770 fps=182 q=26.0 size= 3846kB time=00:04:51.90 bitrate= 107.9kbits/s dup=8516 drop=0 speed=6.07x
I/Square: progress : frame= 8791 fps=181 q=26.0 size= 3846kB time=00:04:52.60 bitrate= 107.7kbits/s dup=8516 drop=0 speed=6.02x
I/Square: progress : frame= 8811 fps=179 q=26.0 size= 3846kB time=00:04:53.26 bitrate= 107.4kbits/s dup=8516 drop=0 speed=5.97x
I/Square: progress : frame= 8831 fps=178 q=26.0 size= 3971kB time=00:04:53.93 bitrate= 110.7kbits/s dup=8516 drop=0 speed=5.92x
I/Square: progress : frame= 8851 fps=177 q=26.0 size= 4214kB time=00:04:54.60 bitrate= 117.2kbits/s dup=8516 drop=0 speed=5.88x
I/Square: progress : frame= 8871 fps=175 q=25.0 size= 4451kB time=00:04:55.26 bitrate= 123.5kbits/s dup=8516 drop=0 speed=5.83x
I/Square: progress : frame= 8891 fps=174 q=26.0 size= 4705kB time=00:04:55.93 bitrate= 130.2kbits/s dup=8516 drop=0 speed=5.78x
I/Square: progress : frame= 8911 fps=172 q=26.0 size= 4963kB time=00:04:56.60 bitrate= 137.1kbits/s dup=8516 drop=0 speed=5.74x
I/Square: progress : frame= 8932 fps=171 q=26.0 size= 5226kB time=00:04:57.30 bitrate= 144.0kbits/s dup=8516 drop=0 speed= 5.7x
I/Square: progress : frame= 8952 fps=170 q=26.0 size= 5475kB time=00:04:57.96 bitrate= 150.5kbits/s dup=8516 drop=0 speed=5.65x
I/Square: progress : frame= 8972 fps=169 q=26.0 size= 5730kB time=00:04:58.63 bitrate= 157.2kbits/s dup=8516 drop=0 speed=5.61x
I/Square: progress : frame= 8992 fps=167 q=26.0 size= 5970kB time=00:04:59.30 bitrate= 163.4kbits/s dup=8516 drop=0 speed=5.57x
I/Square: progress : frame= 8993 fps=167 q=-1.0 Lsize= 9456kB time=00:04:59.76 bitrate= 258.4kbits/s dup=8516 drop=0 speed=5.56x
I/Square: progress : video:9350kB audio:68kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.404826%
I/Square: progress : [libx264 @ 0xf7544400] frame I:36 Avg QP:10.64 size:107101
I/Square: progress : [libx264 @ 0xf7544400] frame P:8957 Avg QP:13.80 size: 638
I/Square: progress : [libx264 @ 0xf7544400] mb I I16..4: 100.0% 0.0% 0.0%
I/Square: progress : [libx264 @ 0xf7544400] mb P I16..4: 0.4% 0.0% 0.0% P16..4: 4.3% 0.0% 0.0% 0.0% 0.0% skip:95.3%
I/Square: progress : [libx264 @ 0xf7544400] coded y,uvDC,uvAC intra: 78.5% 24.5% 12.4% inter: 2.6% 0.2% 0.0%
I/Square: progress : [libx264 @ 0xf7544400] i16 v,h,dc,p: 28% 12% 42% 18%
I/Square: progress : [libx264 @ 0xf7544400] i8c dc,h,v,p: 59% 15% 22% 4%
I/Square: progress : [libx264 @ 0xf7544400] kb/s:255.50
I/Square: progress : [aac @ 0xf7544c00] Qavg: 65536.000
I/Square: Cropped video created.
I/Square: finished -
Fast Video Compression on Android