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Autres articles (38)
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Encodage et transformation en formats lisibles sur Internet
10 avril 2011MediaSPIP transforme et ré-encode les documents mis en ligne afin de les rendre lisibles sur Internet et automatiquement utilisables sans intervention du créateur de contenu.
Les vidéos sont automatiquement encodées dans les formats supportés par HTML5 : MP4, Ogv et WebM. La version "MP4" est également utilisée pour le lecteur flash de secours nécessaire aux anciens navigateurs.
Les documents audios sont également ré-encodés dans les deux formats utilisables par HTML5 :MP3 et Ogg. La version "MP3" (...) -
MediaSPIP v0.2
21 juin 2013, parMediaSPIP 0.2 est la première version de MediaSPIP stable.
Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
Mise à disposition des fichiers
14 avril 2011, parPar défaut, lors de son initialisation, MediaSPIP ne permet pas aux visiteurs de télécharger les fichiers qu’ils soient originaux ou le résultat de leur transformation ou encodage. Il permet uniquement de les visualiser.
Cependant, il est possible et facile d’autoriser les visiteurs à avoir accès à ces documents et ce sous différentes formes.
Tout cela se passe dans la page de configuration du squelette. Il vous faut aller dans l’espace d’administration du canal, et choisir dans la navigation (...)
Sur d’autres sites (6048)
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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
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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> -
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 ?