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Mot : - Tags -/university

Autres articles (60)

Changer son thème graphique

22 février 2011, par kent1

Le thème graphique ne touche pas à la disposition à proprement dite des éléments dans la page. Il ne fait que modifier l’apparence des éléments.
Le placement peut être modifié effectivement, mais cette modification n’est que visuelle et non pas au niveau de la représentation sémantique de la page.
Modifier le thème graphique utilisé
Pour modifier le thème graphique utilisé, il est nécessaire que le plugin zen-garden soit activé sur le site.
Il suffit ensuite de se rendre dans l’espace de configuration du (...)
Problèmes fréquents

10 mars 2010, par kent1

PHP et safe_mode activé
Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site
HTML5 audio and video support

13 avril 2011, par kent1

MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ... | 20

Sur d’autres sites (8981)

wtv : Speed up wtv index creation

29 janvier 2016, par popcornmix

wtv : 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>

[D H] libavformat/wtvdec.c

FFmpeg Android Video cropping speed and perfomance [duplicate]

5 octobre 2016, par kishore jethava

This question already has an answer here :

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

How to make ffmpeg fast speed with curl ?

26 octobre 2016, par s_zhang
If use ffmpeg to do a big size video on the internet, the speed is very slow.
```
$ ffmpeg -i  
```
If use curl to try to make it fast like this way, it finished soon and the result was not right.
```
$ curl -s  | exec ffmpeg -i - 
```
Is there a good way to make it fast ?

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Médias (1)

Revolution of Open-source and film making towards open film making

Autres articles (60)

Changer son thème graphique

Problèmes fréquents

HTML5 audio and video support

Sur d’autres sites (8981)

wtv : Speed up wtv index creation

FFmpeg Android Video cropping speed and perfomance [duplicate]

How to make ffmpeg fast speed with curl ?

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