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Sur d’autres sites (10136)
-
How to pipe sequence of thumbnails/screenshots from ffmpeg to nodejs for further processing ?
30 décembre 2015, par Dmitry IvanovWhat I want to achieve is to take screenshots continuously and pass them to nodejs application in order to process each one separately and do some other stuff. I need this for Linux environment only. I picked
ffmpegwithx11grabas a screenshots provider. The following command works just fine :ffmpeg -t 10 -s 1366x768 -f x11grab -i :0.0+0,0 -vf fps=30 output_%d.png -yIt creates 300 consequent frames of my screen during 10 seconds period. Then I want to redirect the output to my nodejs app rather than just to write files on the hard drive. So I’m calling
ffmpegfrom node :var spawn = require('child_process').spawn,
fps = 30,
duration = 10,
screenSize = {w: 1366, h: 768},
args = [
'-t',
duration,
'-s',
screenSize.w + 'x' + screenSize.h,
'-f',
'x11grab',
'-i',
':0.0',
'-vf',
'fps=' + fps,
'-f',
'mjpeg',
'pipe:1'
],
ff = spawn('ffmpeg', args);
ff.stdout.on('data', function (data) {
console.log('Data size: ' + data.length);
});
ff.stdout.on('end', function (data) {
console.log('Stream end');
});
ff.stderr.on('data', function (data) {
console.log('ff error: ' + data);
});I apologize for a long log, but it’s important :
ff error: ffmpeg version N-77455-g4707497 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libdcadec --enable-libfreetype --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvo-aacenc --enable-libvidstab
libavutil 55. 11.100 / 55. 11.100
libavcodec 57. 20.100 / 57. 20.100
libavformat 57. 20.100 / 57. 20.100
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 21.101 / 6. 21.101
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
ff error: Input #0, x11grab, from ':0.0':
Duration: N/A, start: 1451414448.216650, bitrate: N/A
Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1366x768, 29.97 fps, 29.97 tbr, 1000k tbn,
ff error: 29.97 tbc
ff error: [swscaler @ 0x34238a0] deprecated pixel format used, make sure you did set range correctly
ff error: Output #0, mjpeg, to 'pipe:1':
Metadata:
encoder :
ff error: Lavf57.20.100
Stream #0:0: Video: mjpeg, yuvj444p(pc), 1366x768, q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc
Metadata:
encoder : Lavc57.20.100 mjpeg
Side data:
unknown side data type 10 (24 bytes)
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> mjpeg (native))
Press [q] to stop, [?] for help
ff error: [swscaler @ 0x34238a0] Warning: data is not aligned! This can lead to a speedloss
Data size: 65536
Data size: 65536
Data size: 21413
Data size: 65536
Data size: 65536
Data size: 45581
Data size: 65536
Data size: 65536
Data size: 62377
Data size: 65536
Data size: 65536
Data size: 45581
Data size: 65536
Data size: 65536
Data size: 21413
Data size: 65536
Data size: 60933
Data size: 65536
Data size: 49550
Data size: 65536
Data size: 36709
Data size: 65536
Data size: 27035
Data size: 65536
Data size: 20131
Data size: 65536
Data size: 15887
Data size: 65536
Data size: 15887
Data size: 65536
Data size: 15887
Data size: 65536
Data size: 15911
Data size: 65536
Data size: 15911
Data size: 65536
Data size: 15911
ff error: frame= 16 fps=0.0 q=24.8 size= 1819kB time=00:00:00.53 bitrate=27935.6kbits/s speed=1.04x
Data size: 65536
Data size: 15911
Data size: 65536
Data size: 15911
Data size: 65536
Data size: 15919
Data size: 65536
Data size: 15919
Data size: 65536
Data size: 15919
Data size: 65536
Data size: 15919
Data size: 65536
Data size: 15919
Data size: 65536
Data size: 15911
Data size: 65536
Data size: 15911
Data size: 65536
Data size: 15906
Data size: 65536
Data size: 15906
Data size: 65536
Data size: 15917
Data size: 65536
Data size: 15999
Data size: 65536
Data size: 15949
Data size: 65536
Data size: 15997
Data size: 65536
Data size: 15965
ff error: frame= 32 fps= 30 q=24.8 size= 3092kB time=00:00:01.06 bitrate=23743.7kbits/s speed=1.01x
Data size: 65536
Data size: 16025
Data size: 65536
Data size: 15978
Data size: 65536
Data size: 15963
Data size: 65536
Data size: 16028
Data size: 65536
Data size: 15976
Data size: 65536
Data size: 15958
Data size: 65536
Data size: 15940
Data size: 65536
Data size: 15992
Data size: 65536
Data size: 15962
Data size: 65536
Data size: 16010
Data size: 65536
Data size: 15941
Data size: 65536
Data size: 15941
Data size: 65536
Data size: 15973
Data size: 65536
Data size: 15943
Data size: 65536
Data size: 15947
Data size: 65536
Data size: 15947
ff error: frame= 48 fps= 30 q=24.8 size= 4365kB time=00:00:01.60 bitrate=22349.6kbits/s speed=1.01x
Data size: 65536
Data size: 15982
Data size: 65536
Data size: 15982
Data size: 65536
Data size: 15956
Data size: 65536
Data size: 15956
Data size: 65536
Data size: 15956
Data size: 65536
Data size: 16001
Data size: 65536
Data size: 15930
Data size: 65536
Data size: 15922
Data size: 65536
Data size: 15924
Data size: 65536
Data size: 15924
Data size: 65536
Data size: 15924
Data size: 65536
Data size: 15924
Data size: 65536
Data size: 15911
Data size: 65536
Data size: 15924
Data size: 65536
Data size: 15985
Data size: 65536
Data size: 15985
ff error: frame= 64 fps= 30 q=24.8 size= 5638kB time=00:00:02.13 bitrate=21651.3kbits/s speed=1.01x
Data size: 65536
Data size: 15985
Data size: 65536
Data size: 15924
Data size: 65536
Data size: 15976
Data size: 65536
Data size: 15976
Data size: 65536
Data size: 15958
Data size: 65536
Data size: 16319
Data size: 65536
Data size: 16558
Data size: 65536
Data size: 16576
Data size: 65536
Data size: 16564
Data size: 65536
Data size: 16582
Data size: 65536
Data size: 16589
Data size: 65536
Data size: 16587
Data size: 65536
Data size: 16446
Data size: 65536
Data size: 16450
Data size: 65536
Data size: 16450
Data size: 65536
Data size: 16450
ff error: frame= 80 fps= 30 q=24.8 size= 6918kB time=00:00:02.66 bitrate=21251.0kbits/s speed=1.01x
Data size: 65536
Data size: 16568
Data size: 65536
Data size: 16575
Data size: 65536
Data size: 16585
Data size: 65536
Data size: 18182
Data size: 65536
Data size: 17203
Data size: 65536
Data size: 16769
Data size: 65536
Data size: 16734
Data size: 65536
Data size: 16823
Data size: 65536
Data size: 16338
Data size: 65536
Data size: 16455
Data size: 65536
Data size: 16406
Data size: 65536
Data size: 16645
Data size: 65536
Data size: 16800
Data size: 65536
Data size: 16800
Data size: 65536
Data size: 16800
Data size: 65536
Data size: 16806
ff error: frame= 96 fps= 30 q=24.8 size= 8204kB time=00:00:03.20 bitrate=21001.8kbits/s speed= 1x
Data size: 65536
Data size: 16795
Data size: 65536
Data size: 16804
Data size: 65536
Data size: 16770
Data size: 65536
Data size: 16760
Data size: 65536
Data size: 16813
Data size: 65536
Data size: 16445
Data size: 65536
Data size: 16259
Data size: 65536
Data size: 16260
Data size: 65536
Data size: 16265
Data size: 65536
Data size: 16284
Data size: 65536
Data size: 16233
Data size: 65536
Data size: 16233
Data size: 65536
Data size: 16182
Data size: 65536
Data size: 16058
Data size: 60561
ff error: frame= 111 fps= 30 q=24.8 size= 9384kB time=00:00:03.70 bitrate=20776.1kbits/s speed= 1x
Data size: 61813
Data size: 61813
Data size: 61813
Data size: 61813
Data size: 61813
Data size: 61781
Data size: 61784
Data size: 61796
Data size: 61842
Data size: 61839
Data size: 61793
Data size: 61810
Data size: 61844
Data size: 61844
Data size: 61850
Data size: 61841
ff error: frame= 127 fps= 30 q=24.8 size= 10350kB time=00:00:04.23 bitrate=20027.8kbits/s speed= 1x
Data size: 61858
Data size: 61853
Data size: 61833
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
ff error: frame= 142 fps= 30 q=24.8 size= 11256kB time=00:00:04.73 bitrate=19480.5kbits/s speed= 1x
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
ff error: frame= 158 fps= 30 q=24.8 size= 12223kB time=00:00:05.26 bitrate=19011.4kbits/s speed= 1x
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61867
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
ff error: frame= 173 fps= 30 q=24.8 size= 13129kB time=00:00:05.76 bitrate=18650.3kbits/s speed= 1x
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
ff error: frame= 188 fps= 30 q=24.8 size= 14035kB time=00:00:06.26 bitrate=18346.6kbits/s speed= 1x
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
ff error: frame= 203 fps= 30 q=24.8 size= 14941kB time=00:00:06.76 bitrate=18087.8kbits/s speed= 1x
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
ff error: frame= 219 fps= 30 q=24.8 size= 15907kB time=00:00:07.30 bitrate=17850.8kbits/s speed= 1x
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
ff error: frame= 234 fps= 30 q=24.8 size= 16813kB time=00:00:07.80 bitrate=17658.1kbits/s speed= 1x
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
Data size: 61850
ff error: frame= 250 fps= 30 q=24.8 size= 17780kB time=00:00:08.33 bitrate=17478.0kbits/s speed= 1x
Data size: 61850
Data size: 61712
Data size: 61712
Data size: 61712
Data size: 61712
Data size: 61712
Data size: 61712
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
ff error: frame= 265 fps= 30 q=24.8 size= 18675kB time=00:00:08.83 bitrate=17319.4kbits/s speed= 1x
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
ff error: frame= 280 fps= 30 q=24.8 size= 19563kB time=00:00:09.33 bitrate=17171.2kbits/s speed= 1x
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
ff error: frame= 295 fps= 30 q=24.8 size= 20452kB time=00:00:09.83 bitrate=17038.0kbits/s speed= 1x
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
Data size: 60638
ff error: frame= 300 fps= 30 q=24.8 Lsize= 20748kB time=00:00:10.00 bitrate=16996.6kbits/s speed=0.998x
video:20748kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%
Stream endThe error messages are weird too, but not the biggest problem for now, so let’s omit them.
Looking at all the data coming from
ffmpegI assume that the images are coming as a single stream without any separation. I don’t think that looking into binary data and seeking for certain flag bytes is a good idea to solve the problem and separate the images. The command line I mentioned in the top of the post does separate writes to hard drive that means it produces separate writable streams per each screenshot. And it doesn’t do so for a spawned process from nodejs.What am I missing ?
-
ffmpeg video conversion from webm to mp4 is adding lag to the video
21 janvier 2016, par Hemant KumarHi I am trying to convert video from .webm extension to .mp4 extension and it is adding lags to the video, also not showing me the full video.
I am using following video conversion command.
"ffmpeg -i {$input} -strict -2 -vcodec libx264 -preset slow -vb 500k -maxrate 500k -bufsize 1000k -vf 'scale=-1:480 ".fix_video_orientation($input)."' -threads 0 -ab 64k -s {$resolution} -movflags faststart -metadata:s:v:0 rotate=0 {$output}";"fix_video_orientation" function is given below. It rotate the resulting video if video while recording is rotated to certain angle.
function fix_video_orientation($input){
$return= ", transpose=1 ";
$dd= exec("ffprobe -of json -show_streams {$input} | grep rotate");
if(!empty($dd)){
$dd=explode(":",$dd);
$rotate=str_replace(",","",str_replace('"',"",$dd[1]));
if($rotate=="90")return $return;
else if ($rotate=="180") return ", transpose=2,transpose=2 ";
else if($rotate == "270") return ", transpose=2 ";
}Currently above script is supporting "flv","avi","mp4","mkv","mpg","wmv","asf","webm","mov","3gp","3gpp" extensions, also the script is supporting the resulting .mp4 file to play on all browsers and devices.
For query :
ffmpeg -i <server path="path">/g9zyy2qg54qp1l5spo2-mergedFile.webm -strict -2 -vcodec libx264 -preset slow -vb 500k -maxrate 500k -bufsize 1000k -vf 'scale=-1:480 ' -threads 0 -ab 64k -s 640x480 -movflags faststart -metadata:s:v:0 rotate=0 <server path="path">/g9zyy2qg54qp1l5spo2-mergedFile5.mp4
</server></server>Console output :
ffmpeg version 2.2.5 Copyright (c) 2000-2014 the FFmpeg developers
built on Aug 1 2014 09:24:02 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libtheora --enable-libx264 --enable-libvpx --enable-libmp3lame
libavutil 52. 66.100 / 52. 66.100
libavcodec 55. 52.102 / 55. 52.102
libavformat 55. 33.100 / 55. 33.100
libavdevice 55. 10.100 / 55. 10.100
libavfilter 4. 2.100 / 4. 2.100
libswscale 2. 5.102 / 2. 5.102
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, matroska,webm, from '<server path="path">/g9zyy2qg54qp1l5spo2-mergedFile.webm':
Metadata:
encoder : Lavf55.33.100
Duration: 00:00:13.53, start: 0.000000, bitrate: 387 kb/s
Stream #0:0: Audio: vorbis, 44100 Hz, stereo, fltp
Stream #0:1: Video: vp8, yuv420p, 320x240, SAR 1:1 DAR 4:3, 1k fps, 1k tbr, 1k tbn, 1k tbc (default)
[libx264 @ 0x38fcf40] using SAR=1/1
[libx264 @ 0x38fcf40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x38fcf40] profile High, level 5.2
[libx264 @ 0x38fcf40] 264 - core 142 r2453 ea0ca51 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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=24 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=cbr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=500 vbv_bufsize=1000 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '<server path="path">/g9zyy2qg54qp1l5spo2-mergedFile5.mp4':
Metadata:
encoder : Lavf55.33.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 500 kb/s, 16k tbn, 1k tbc (default)
Metadata:
rotate : 0
Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 64 kb/s
Stream mapping:
Stream #0:1 -> #0:0 (vp8 -> libx264)
Stream #0:0 -> #0:1 (vorbis -> aac)
Press [q] to stop, [?] for help
frame= 358 fps=0.0 q=39.0 size= 27kB time=00:00:00.74 bitrate= 295.4kbits/frame= 723 fps=691 q=41.0 size= 57kB time=00:00:01.39 bitrate= 335.1kbits/frame= 1410 fps=706 q=45.0 size= 108kB time=00:00:01.74 bitrate= 509.0kbits/frame= 1777 fps=710 q=45.0 size= 134kB time=00:00:02.13 bitrate= 512.7kbits/frame= 2126 fps=707 q=45.0 size= 164kB time=00:00:02.50 bitrate= 535.0kbits/frame= 2497 fps=710 q=45.0 size= 191kB time=00:00:02.85 bitrate= 547.8kbits/frame= 2869 fps=708 q=45.0 size= 225kB time=00:00:03.20 bitrate= 575.7kbits/frame= 3226 fps=707 q=45.0 size= 250kB time=00:00:03.59 bitrate= 568.2kbits/frame= 3586 fps=709 q=46.0 size= 282kB time=00:00:03.94 bitrate= 585.7kbits/frame= 3956 fps=710 q=45.0 size= 305kB time=00:00:04.59 bitrate= 543.8kbits/frame= 4358 fps=710 q=46.0 size= 340kB time=00:00:04.71 bitrate= 591.1kbits/frame= 4751 fps=712 q=45.0 size= 362kB time=00:00:05.10 bitrate= 581.3kbits/frame= 5133 fps=713 q=45.0 size= 393kB time=00:00:05.50 bitrate= 584.9kbits/frame= 5510 fps=715 q=45.0 size= 416kB time=00:00:05.89 bitrate= 578.5kbits/frame= 5880 fps=715 q=45.0 size= 448kB time=00:00:06.24 bitrate= 587.6kbits/frame= 6250 fps=715 q=45.0 size= 472kB time=00:00:06.64 bitrate= 582.3kbits/frame= 6651 fps=715 q=45.0 size= 501kB time=00:00:06.98 bitrate= 587.1kbits/frame= 7012 fps=713 q=50.0 size= 524kB time=00:00:07.68 bitrate= 559.0kbits/frame= 7396 fps=714 q=45.0 size= 551kB time=00:00:07.75 bitrate= 582.5kbits/frame= 7771 fps=714 q=47.0 size= 575kB time=00:00:08.10 bitrate= 581.1kbits/frame= 8139 fps=714 q=50.0 size= 604kB time=00:00:08.52 bitrate= 580.8kbits/frame= 8509 fps=715 q=46.0 size= 628kB time=00:00:08.87 bitrate= 580.4kbits/frame= 8885 fps=715 q=46.0 size= 655kB time=00:00:09.19 bitrate= 583.1kbits/frame= 9233 fps=714 q=46.0 size= 677kB time=00:00:09.54 bitrate= 581.2kbits/frame= 9603 fps=714 q=46.0 size= 706kB time=00:00:09.96 bitrate= 580.6kbits/frame= 9975 fps=714 q=46.0 size= 728kB time=00:00:10.65 bitrate= 559.8kbits/frame=10376 fps=715 q=46.0 size= 757kB time=00:00:10.75 bitrate= 577.0kbits/frame=10730 fps=714 q=46.0 size= 780kB time=00:00:11.07 bitrate= 577.1kbits/frame=11090 fps=713 q=47.0 size= 808kB time=00:00:11.42 bitrate= 579.7kbits/frame=11447 fps=713 q=46.0 size= 832kB time=00:00:11.79 bitrate= 578.0kbits/frame=11802 fps=712 q=48.0 size= 858kB time=00:00:12.14 bitrate= 578.5kbits/frame=12181 fps=713 q=46.0 size= 880kB time=00:00:12.51 bitrate= 576.3kbits/frame=12563 fps=713 q=46.0 size= 908kB time=00:00:12.95 bitrate= 573.9kbits/frame=13527 fps=715 q=46.0 size= 960kB time=-577014:-32:-22.-77 bitrate=N/A [mp4 @ 0x3912e00] Starting second pass: moving the moov atom to the beginning of the file
frame=13527 fps=713 q=-1.0 Lsize= 1139kB time=00:00:13.52 bitrate= 689.8kbits/s dup=13036 drop=0
video:863kB audio:107kB subtitle:0 data:0 global headers:0kB muxing overhead 17.479137%
[libx264 @ 0x38fcf40] frame I:55 Avg QP:33.13 size: 6072
[libx264 @ 0x38fcf40] frame P:3409 Avg QP:32.90 size: 95
[libx264 @ 0x38fcf40] frame B:10063 Avg QP:39.74 size: 22
[libx264 @ 0x38fcf40] consecutive B-frames: 0.8% 0.0% 0.0% 99.2%
[libx264 @ 0x38fcf40] mb I I16..4: 25.7% 69.5% 4.8%
[libx264 @ 0x38fcf40] mb P I16..4: 0.2% 0.2% 0.0% P16..4: 1.4% 0.1% 0.4% 0.0% 0.0% skip:97.7%
[libx264 @ 0x38fcf40] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.3% 0.0% 0.0% direct: 0.0% skip:99.7% L0:41.0% L1:58.9% BI: 0.0%
[libx264 @ 0x38fcf40] 8x8 transform intra:67.9% inter:94.6%
[libx264 @ 0x38fcf40] direct mvs spatial:86.6% temporal:13.4%
[libx264 @ 0x38fcf40] coded y,uvDC,uvAC intra: 36.1% 36.9% 1.7% inter: 0.1% 0.1% 0.0%
[libx264 @ 0x38fcf40] i16 v,h,dc,p: 32% 27% 9% 31%
[libx264 @ 0x38fcf40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 13% 18% 7% 7% 8% 8% 9% 8%
[libx264 @ 0x38fcf40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 16% 7% 7% 9% 10% 9% 7% 8%
[libx264 @ 0x38fcf40] i8c dc,h,v,p: 73% 14% 9% 4%
[libx264 @ 0x38fcf40] Weighted P-Frames: Y:0.6% UV:0.0%
[libx264 @ 0x38fcf40] ref P L0: 77.5% 12.2% 9.1% 0.9% 0.2% 0.0%
[libx264 @ 0x38fcf40] ref B L0: 86.6% 13.2% 0.2% 0.0%
[libx264 @ 0x38fcf40] ref B L1: 89.8% 10.2%
[libx264 @ 0x38fcf40] kb/s:522.05
</server></server> -
FFmpeg - mapping 4 audio channels to 1 audio track
18 juillet 2016, par AvalonI have two QT MOV’s that I want to concatenate using FFmpeg, but I am having trouble understanding how to map the audio channels.
First MOV has 2 channels, Front Left and Front Right. Second MOV has 4 channels, Front Left, Front Right, Side Left and Side Right.
How do I create 1 audio track with 4 channels mapped as FL, FR, SL and SR ?
MediaInfo reports the following (not desired result) :
Audio #1
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 126 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 4.14 MiB (12%)
Default : Yes
Alternate group : 1
Audio #2
ID : 3
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 127 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 4.18 MiB (12%)
Default : No
Alternate group : 1
Audio #3
ID : 4
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 110 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 3.62 MiB (10%)
Default : No
Alternate group : 1
Audio #4
ID : 5
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 110 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 3.61 MiB (10%)
Default : No
Alternate group : 1FFmpeg command is as follows :
`ffmpeg -i "2chan.mov" -i "4chan.mov" -filter_complex "[0:v] [0:a] [1:v] [1:a] concat=n=2:v=1:a=1 [v] [a]; [v]scale=-1:288[v2]; [a]channelsplit=channel_layout=quad(side)[FL][FR][SL][SR]" -map "[v2]" -map "[FL]" -map "[FR]" -map "[SL]" -map "[SR]" -c:v libx264 -pix_fmt yuv420p -b:v 700k -minrate 700k -maxrate 700k -bufsize 700k -r 25 -sc_threshold 25 -keyint_min 25 -g 25 -qmin 3 -qmax 51 -threads 8 -c:a aac -strict -2 -b:a 160k -ar 48000 -async 1 -ac 4 combined.mp4`Console output :
ffmpeg version N-77883-gd7c75a5 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
--enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --
enable-lzma --enable-decklink --enable-zlib
libavutil 55. 13.100 / 55. 13.100
libavcodec 57. 22.100 / 57. 22.100
libavformat 57. 21.101 / 57. 21.101
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 25.100 / 6. 25.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0000000000575c00] ignoring 'frma' atom of 'mp4a', str
eam format is 'mp4a'
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2chan.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2016-01-19 05:48:38
Duration: 00:00:45.00, start: 0.000000, bitrate: 364 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte1
70m/smpte170m/bt709), 768x576, 196 kb/s, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 25 tbn
, 50 tbc (default)
Metadata:
creation_time : 2016-01-19 05:48:40
handler_name : Apple Alias Data Handler
encoder : H.264
timecode : 00:00:00:00
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, flt
p, 159 kb/s (default)
Metadata:
creation_time : 2016-01-19 05:48:42
handler_name : Apple Alias Data Handler
timecode : 00:00:00:00
Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2016-01-19 05:49:42
handler_name : Apple Alias Data Handler
timecode : 00:00:00:00
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000005da420] ignoring 'frma' atom of 'mp4a', str
eam format is 'mp4a'
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '4chan.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2016-01-19 04:11:52
Duration: 00:19:58.00, start: 0.000000, bitrate: 5118 kb/s
Stream #1:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte1
70m/smpte170m/bt709), 768x576, 4955 kb/s, 25 fps, 25 tbr, 25k tbn, 50k tbc (defa
ult)
Metadata:
creation_time : 2016-01-19 04:11:52
handler_name : Apple Alias Data Handler
encoder : H.264
timecode : 00:28:33:21
Stream #1:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, quad, fltp,
157 kb/s (default)
Metadata:
creation_time : 2016-01-19 04:11:52
handler_name : Apple Alias Data Handler
Stream #1:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s
Metadata:
rotate : 0
creation_time : 2016-01-19 04:11:52
handler_name : Apple Alias Data Handler
timecode : 00:28:33:21
File 'Output_Complex_6.mp4' already exists. Overwrite ? [y/N] y
-async is forwarded to lavfi similarly to -af aresample=async=1:min_hard_comp=0.
100000:first_pts=0.
Last message repeated 1 times
[libx264 @ 000000000057d260] using SAR=1/1
[libx264 @ 000000000057d260] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
SlowShuffle
[libx264 @ 000000000057d260] profile High, level 2.1
[libx264 @ 000000000057d260] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC cod
ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r
ef=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_pski
p=1 chroma_qp_offset=-2 threads=8 lookahead_threads=1 sliced_threads=0 nr=0 deci
mate=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=25 keyint_min=13
scenecut=25 intra_refresh=0 rc_lookahead=25 rc=cbr mbtree=1 bitrate=700 ratetol
=1.0 qcomp=0.60 qpmin=3 qpmax=51 qpstep=4 vbv_maxrate=700 vbv_bufsize=700 nal_hr
d=none filler=0 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'Output_Complex_6.mp4':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
title : TestTitle
encoder : Lavf57.21.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 384x28
8 [SAR 1:1 DAR 4:3], q=3-51, 700 kb/s, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.22.100 libx264
Side data:
unknown side data type 10 (24 bytes)
Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream #0:2: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream #0:3: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream #0:4: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream mapping:
Stream #0:0 (h264) -> concat:in0:v0
Stream #0:1 (aac) -> concat:in0:a0
Stream #1:0 (h264) -> concat:in1:v0
Stream #1:1 (aac) -> concat:in1:a0
scale -> Stream #0:0 (libx264)
channelsplit:FL -> Stream #0:1 (aac)
channelsplit:FR -> Stream #0:2 (aac)
channelsplit:SL -> Stream #0:3 (aac)
channelsplit:SR -> Stream #0:4 (aac)
Press [q] to stop, [?] for help
frame= 85 fps=0.0 q=3.0 size= 6kB time=00:00:02.68 bitrate= 18.8kbits/s
frame= 150 fps=148 q=3.0 size= 14kB time=00:00:05.24 bitrate= 21.3kbits/s
frame= 198 fps=130 q=3.0 size= 65kB time=00:00:07.21 bitrate= 74.4kbits/s
frame= 238 fps=118 q=3.0 size= 125kB time=00:00:08.78 bitrate= 116.2kbits/s
frame= 271 fps=108 q=3.0 size= 171kB time=00:00:10.09 bitrate= 138.9kbits/s
frame= 304 fps=100 q=3.0 size= 218kB time=00:00:11.45 bitrate= 156.0kbits/s
frame= 339 fps= 96 q=3.0 size= 268kB time=00:00:12.84 bitrate= 171.0kbits/s
frame= 372 fps= 93 q=-1.0 Lsize= 376kB time=00:00:14.80 bitrate= 208.0kbits
/s speed=3.69x
video:27kB audio:319kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 8.551113%
[libx264 @ 000000000057d260] frame I:15 Avg QP: 3.01 size: 1370
[libx264 @ 000000000057d260] frame P:90 Avg QP: 3.00 size: 24
[libx264 @ 000000000057d260] frame B:267 Avg QP: 3.00 size: 17
[libx264 @ 000000000057d260] consecutive B-frames: 4.3% 0.0% 0.0% 95.7%
[libx264 @ 000000000057d260] mb I I16..4: 95.8% 0.0% 4.2%
[libx264 @ 000000000057d260] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.1% 0.0
% 0.0% 0.0% 0.0% skip:99.9%
[libx264 @ 000000000057d260] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0% 0.0
% 0.0% direct: 0.0% skip:100.0% L0: 0.0% L1:100.0% BI: 0.0%
[libx264 @ 000000000057d260] 8x8 transform intra:0.0% inter:50.0%
[libx264 @ 000000000057d260] coded y,uvDC,uvAC intra: 3.1% 8.8% 8.2% inter: 0.0%
0.0% 0.0%
[libx264 @ 000000000057d260] i16 v,h,dc,p: 90% 5% 5% 0%
[libx264 @ 000000000057d260] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 46% 29% 23% 0% 0%
0% 0% 0% 0%
[libx264 @ 000000000057d260] i8c dc,h,v,p: 76% 7% 17% 0%
[libx264 @ 000000000057d260] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000000000057d260] kb/s:14.64
[aac @ 0000000000578320] Qavg: 65394.652
[aac @ 0000000000593020] Qavg: 65473.359
[aac @ 0000000000593940] Qavg: 65536.000
[aac @ 0000000000594260] Qavg: 65536.000
Exiting normally, received signal 2.
Terminate batch job (Y/N)? Y
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