Dynamic Time Warping & Synchronizace videí

June 04, 2015

34

Dynamic Time Warping & Synchronizace videí

Ostravské Pyvo, 2015-06-04

Petr Viktorin

June 04, 2015

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3 4 5 6 7
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pyv
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pyvo
vo
video!

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Dynamic Time Warping
& Video Synchronization
Petr Viktorin
[email protected]
Brněnské PyVo, 2015-05-28

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Signal A:
Signal B:

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x - y

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ffmpeg

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$ ffmpeg -filter_complex [bd] anullsink ;
color=color=00000000:duration=186.68:rate=50:size=1920x1081 [bb] ;
movie=filename=in1.png:streams=dv [bc] ; [bb][bc] overlay=repeatlast=1 [ay] ; [ay][az]
overlay=repeatlast=0 [ax] ; [ax] setpts=expr=N/FRAME_RATE/TB [out0] ;
color=color=00000000:duration=173.68:rate=50:size=1920x1080 [av] ;
movie=filename=in2.png:streams=dv [aw] ; [av][aw] overlay=repeatlast=1 [au] ; [au]
fade=alpha=1:color=00000000:duration=0.5:start_time=173.18:type=out [ag] ;
movie=filename=in3.ogv:streams=dv+da [at][bd] ; [at] fps=fps=30 [as] ; [as]
format=pix_fmts=rgba|yuva420p|yuva422p|yuva444p [ar] ; [ar] setpts=expr=PTS-STARTPTS [aq] ; [aq]
scale=h=1080:w=1440 [ap] ; [ap] setsar=sar=1 [ao] ; [ao]
pad=color=00000000:h=1080:w=1920:x=0:y=0 [an] ; [an] fps=fps=25 [am] ; [am]
fade=alpha=1:color=00000000:duration=0.5:start_time=179.233333:type=out [al] ; [al]
trim=start=5.24506890629 [ak] ; [ak] setpts=expr=PTS-STARTPTS [aj] ; [aj] trim=end=173.68 [ai] ;
[ai] setpts=expr=PTS-STARTPTS [ah] ; [ag][ah] overlay=repeatlast=0 [w] ; [af] fps=fps=30 [ae] ;
[ae] format=pix_fmts=rgba|yuva420p|yuva422p|yuva444p [ad] ; [ad] setpts=expr=PTS-STARTPTS [ac] ;
[ac] scale=h=271:w=481 [ab] ; [ab] setsar=sar=1 [aa] ; [aa]
pad=color=00000000:h=1080:w=1920:x=1438:y=809 [z] ; [z] fps=fps=25 [y] ; [y]
fade=alpha=1:color=00000000:duration=0.5:start_time=173.18:type=out [x] ; [w][x]
overlay=repeatlast=0 [b] ; movie=filename=in4.MTS:streams=dv+da [af][v] ; [v]
asetpts=expr=PTS-STARTPTS [c] ; color=color=00000000:duration=6:rate=50:size=1921x1081 [t] ;
movie=filename=in5.png:streams=dv [u] ; [t][u] overlay=repeatlast=1 [s] ; [s]
fade=alpha=1:color=00000000:duration=0.5:start_time=0:type=in [r] ; [r]
fade=alpha=1:color=00000000:duration=0.5:start_time=5.5:type=out [d] ;
aevalsrc=duration=6:exprs=0 [e] ; color=color=00000000:duration=7:rate=50:size=1921x1081 [p] ;
movie=filename=in6.png:streams=dv [q] ; [p][q] overlay=repeatlast=1 [i] ;
color=color=00000000:duration=7:rate=50:size=528x528 [n] ; movie=filename=in7.png:streams=dv [o]
; [n][o] overlay=repeatlast=1 [m] ; [m] scale=h=528:w=528 [l] ; [l] setsar=sar=1 [k] ; [k]
pad=color=00000000:h=1080:w=1920:x=697:y=439 [j] ; [i][j] overlay=repeatlast=0 [h] ; [h]
fade=alpha=1:color=00000000:duration=0.5:start_time=0:type=in [f] ; aevalsrc=duration=7:exprs=0
[g] ; [b][c][d][e][f][g] concat=a=1:n=3:v=1 [az][a] ; [a] asetpts=expr=N/SR/TB [out1] -f mp4
-c:v libx264 -c:a aac -crf 30 -maxrate 5000k -strict -2 -map [out0] -map [out1] outfile.mp4

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$ ffmpeg -filter_complex [bd] anullsink ;
color=color=00000000:duration=186.68:rate=50:size=1920x1081 [bb] ;
movie=filename=in1.png:streams=dv [bc] ; [bb][bc] overlay=repeatlast=1 [ay] ; [ay][az]
overlay=repeatlast=0 [ax] ; [ax] setpts=expr=N/FRAME_RATE/TB [out0] ;
color=color=00000000:duration=173.68:rate=50:size=1920x1080 [av] ;
movie=filename=in2.png:streams=dv [aw] ; [av][aw] overlay=repeatlast=1 [au] ; [au]
fade=alpha=1:color=00000000:duration=0.5:start_time=173.18:type=out [ag] ;
movie=filename=in3.ogv:streams=dv+da [at][bd] ; [at] fps=fps=30 [as] ; [as]
format=pix_fmts=rgba|yuva420p|yuva422p|yuva444p [ar] ; [ar] setpts=expr=PTS-STARTPTS [aq] ; [aq]
scale=h=1080:w=1440 [ap] ; [ap] setsar=sar=1 [ao] ; [ao]
pad=color=00000000:h=1080:w=1920:x=0:y=0 [an] ; [an] fps=fps=25 [am] ; [am]
fade=alpha=1:color=00000000:duration=0.5:start_time=179.233333:type=out [al] ; [al]
trim=start=5.24506890629 [ak] ; [ak] setpts=expr=PTS-STARTPTS [aj] ; [aj] trim=end=173.68 [ai] ;
[ai] setpts=expr=PTS-STARTPTS [ah] ; [ag][ah] overlay=repeatlast=0 [w] ; [af] fps=fps=30 [ae] ;
[ae] format=pix_fmts=rgba|yuva420p|yuva422p|yuva444p [ad] ; [ad] setpts=expr=PTS-STARTPTS [ac] ;
[ac] scale=h=271:w=481 [ab] ; [ab] setsar=sar=1 [aa] ; [aa]
pad=color=00000000:h=1080:w=1920:x=1438:y=809 [z] ; [z] fps=fps=25 [y] ; [y]
fade=alpha=1:color=00000000:duration=0.5:start_time=173.18:type=out [x] ; [w][x]
overlay=repeatlast=0 [b] ; movie=filename=in4.MTS:streams=dv+da [af][v] ; [v]
asetpts=expr=PTS-STARTPTS [c] ; color=color=00000000:duration=6:rate=50:size=1921x1081 [t] ;
movie=filename=in5.png:streams=dv [u] ; [t][u] overlay=repeatlast=1 [s] ; [s]
fade=alpha=1:color=00000000:duration=0.5:start_time=0:type=in [r] ; [r]
fade=alpha=1:color=00000000:duration=0.5:start_time=5.5:type=out [d] ;
aevalsrc=duration=6:exprs=0 [e] ; color=color=00000000:duration=7:rate=50:size=1921x1081 [p] ;
movie=filename=in6.png:streams=dv [q] ; [p][q] overlay=repeatlast=1 [i] ;
color=color=00000000:duration=7:rate=50:size=528x528 [n] ; movie=filename=in7.png:streams=dv [o]
; [n][o] overlay=repeatlast=1 [m] ; [m] scale=h=528:w=528 [l] ; [l] setsar=sar=1 [k] ; [k]
pad=color=00000000:h=1080:w=1920:x=697:y=439 [j] ; [i][j] overlay=repeatlast=0 [h] ; [h]
fade=alpha=1:color=00000000:duration=0.5:start_time=0:type=in [f] ; aevalsrc=duration=7:exprs=0
[g] ; [b][c][d][e][f][g] concat=a=1:n=3:v=1 [az][a] ; [a] asetpts=expr=N/SR/TB [out1] -f mp4
-c:v libx264 -c:a aac -crf 30 -maxrate 5000k -strict -2 -map [out0] -map [out1] outfile.mp4

View Slide
$ ffmpeg -filter_complex [bd] anullsink ;
color=color=00000000:duration=186.68:rate=50:size=1920x1081 [bb] ;
movie=filename=in1.png:streams=dv [bc] ; [bb][bc] overlay=repeatlast=1 [ay] ; [ay][az]
overlay=repeatlast=0 [ax] ; [ax] setpts=expr=N/FRAME_RATE/TB [out0] ;
color=color=00000000:duration=173.68:rate=50:size=1920x1080 [av] ;
movie=filename=in2.png:streams=dv [aw] ; [av][aw] overlay=repeatlast=1 [au] ; [au]
fade=alpha=1:color=00000000:duration=0.5:start_time=173.18:type=out [ag] ;
movie=filename=in3.ogv:streams=dv+da [at][bd] ; [at] fps=fps=30 [as] ; [as]
format=pix_fmts=rgba|yuva420p|yuva422p|yuva444p [ar] ; [ar] setpts=expr=PTS-STARTPTS [aq] ; [aq]
scale=h=1080:w=1440 [ap] ; [ap] setsar=sar=1 [ao] ; [ao]
pad=color=00000000:h=1080:w=1920:x=0:y=0 [an] ; [an] fps=fps=25 [am] ; [am]
fade=alpha=1:color=00000000:duration=0.5:start_time=179.233333:type=out [al] ; [al]
trim=start=5.24506890629 [ak] ; [ak] setpts=expr=PTS-STARTPTS [aj] ; [aj] trim=end=173.68 [ai] ;
[ai] setpts=expr=PTS-STARTPTS [ah] ; [ag][ah] overlay=repeatlast=0 [w] ; [af] fps=fps=30 [ae] ;
[ae] format=pix_fmts=rgba|yuva420p|yuva422p|yuva444p [ad] ; [ad] setpts=expr=PTS-STARTPTS [ac] ;
[ac] scale=h=271:w=481 [ab] ; [ab] setsar=sar=1 [aa] ; [aa]
pad=color=00000000:h=1080:w=1920:x=1438:y=809 [z] ; [z] fps=fps=25 [y] ; [y]
fade=alpha=1:color=00000000:duration=0.5:start_time=173.18:type=out [x] ; [w][x]
overlay=repeatlast=0 [b] ; movie=filename=in4.MTS:streams=dv+da [af][v] ; [v]
asetpts=expr=PTS-STARTPTS [c] ; color=color=00000000:duration=6:rate=50:size=1921x1081 [t] ;
movie=filename=in5.png:streams=dv [u] ; [t][u] overlay=repeatlast=1 [s] ; [s]
fade=alpha=1:color=00000000:duration=0.5:start_time=0:type=in [r] ; [r]
fade=alpha=1:color=00000000:duration=0.5:start_time=5.5:type=out [d] ;
aevalsrc=duration=6:exprs=0 [e] ; color=color=00000000:duration=7:rate=50:size=1921x1081 [p] ;
movie=filename=in6.png:streams=dv [q] ; [p][q] overlay=repeatlast=1 [i] ;
color=color=00000000:duration=7:rate=50:size=528x528 [n] ; movie=filename=in7.png:streams=dv [o]
; [n][o] overlay=repeatlast=1 [m] ; [m] scale=h=528:w=528 [l] ; [l] setsar=sar=1 [k] ; [k]
pad=color=00000000:h=1080:w=1920:x=697:y=439 [j] ; [i][j] overlay=repeatlast=0 [h] ; [h]
fade=alpha=1:color=00000000:duration=0.5:start_time=0:type=in [f] ; aevalsrc=duration=7:exprs=0
[g] ; [b][c][d][e][f][g] concat=a=1:n=3:v=1 [az][a] ; [a] asetpts=expr=N/SR/TB [out1] -f mp4
-c:v libx264 -c:a aac -crf 30 -maxrate 5000k -strict -2 -map [out0] -map [out1] outfile.mp4

View Slide