maskedmerge

Watch on youtube.com

doc

https://ffmpeg.org/ffmpeg-filters.html#maskedmerge, https://ffmpeg.org/ffmpeg-filters.html#geq

.

see also

alphamerge, alphaextract

What can be achieved with “alphamerge” is also possible with “maskedmerge”, and using “maskedmerge” is a bit more compact.

00:00:00

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=0xAAAAAA:s=1920x1080:d=24[alpha]; [1:v][alpha]alphamerge[1v]; [0:v][1v]overlay[v] " -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=0xAAAAAA:s=1920x1080:d=24[mask]; [0:v][1:v][mask]maskedmerge[v] " -map '[v]' -an out.mp4

00:00:20

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=1920x1080:d=24, geq='lum=mod(sqrt((W/2-X)^2+(H/2-Y)^2)*3,256)' [alpha]; [1:v][alpha]alphamerge[1v]; [0:v][1v]overlay[v] " -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=1920x1080:d=24, geq='lum=mod(sqrt((W/2-X)^2+(H/2-Y)^2)*3,256)' [mask]; [0:v][1:v][mask]maskedmerge[v] " -map '[v]' -an out.mp4

00:00:40

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " testsrc2=s=1920x1080:d=24[alpha]; [1:v][alpha]alphamerge[1v]; [0:v][1v]overlay[v] " -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " testsrc2=s=1920x1080:d=24[mask]; [0:v][1:v][mask]maskedmerge[v] " -map '[v]' -an out.mp4

1x1 checker board

00:01:00

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='if(eq(mod(X,2),mod(Y,2)),255,0)' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='if(eq(mod(X,2),mod(Y,2)),255,0)' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

32x32 checker board

00:01:20

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='if(eq(mod(floor(X/32),2),mod(floor(Y/32),2)),255,0)' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='if(eq(mod(floor(X/32),2),mod(floor(Y/32),2)),255,0)' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

00:01:40

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=if(eq(mod(floor(X/32),2),mod(floor(Y/32),2)),255,0): cr=128: cb=128' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=if(eq(mod(floor(X/32),2),mod(floor(Y/32),2)),255,0): cr=128: cb=128' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

gradation

00:02:00

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=X*255/W: cr=128: cb=128' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=X*255/W: cr=128: cb=128' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

00:02:20

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=Y*255/H: cr=128: cb=128' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=Y*255/H: cr=128: cb=128' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

00:02:40

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=255*(1-sqrt((X-W/2)^2+(Y-H/2)^2)/sqrt((W/2)^2+(H/2)^2)): cr=128: cb=128' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=255*(1-sqrt((X-W/2)^2+(Y-H/2)^2)/sqrt((W/2)^2+(H/2)^2)): cr=128: cb=128' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

00:03:00

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=255*gauss((X/W-0.5)*3)*gauss((Y/H-0.5)*3)/gauss(0)/gauss(0): cr=128: cb=128' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='lum=255*gauss((X/W-0.5)*3)*gauss((Y/H-0.5)*3)/gauss(0)/gauss(0): cr=128: cb=128' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

wave (horizontal)

00:03:20

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin(X*(8*PI/W))*127' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin(X*(8*PI/W))*127' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

wave (vertical)

00:03:40

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin(Y*(8*PI/H))*127' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin(Y*(8*PI/H))*127' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

wave (radial)

00:04:00

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin(((W/2-X)^2+(H/2-Y)^2)*(8*PI/((W/2)^2+(H/2)^2)))*127' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin(((W/2-X)^2+(H/2-Y)^2)*(8*PI/((W/2)^2+(H/2)^2)))*127' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

wave (horizontal)

00:04:20

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin((X+T*40)*(8*PI/W))*127' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin((X+T*40)*(8*PI/W))*127' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

wave (vertical)

00:04:40

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin((Y+T*20)*(8*PI/H))*127' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin((Y+T*20)*(8*PI/H))*127' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4

wave (radial)

00:05:00

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin(((W/2-X)^2+(H/2-Y)^2)*((8+T)*PI/((W/2)^2+(H/2)^2))-T*10)*127' [alpha]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [1v][alpha]alphamerge[1v]; [0v][1v]overlay,format=yuv420p [v]" -map '[v]' -an out.mp4

#! /bin/sh f1="Pexels_2877_2880.mp4" f2="Pexels_2880_2877.mp4" ffmpeg -y -i "${f1}" -i "${f2}" -filter_complex " color=black:s=992x558:d=24 ,format=yuv444p ,geq='128+sin(((W/2-X)^2+(H/2-Y)^2)*((8+T)*PI/((W/2)^2+(H/2)^2))-T*10)*127' [mask]; [0:v]scale=992:558,setsar=1[0v]; [1:v]scale=992:558,setsar=1[1v]; [0v][1v][mask]maskedmerge,format=yuv420p [v]" -map '[v]' -an out.mp4