-track watermark1.png out=1000 \
-track clip3.dv \
-filter greyscale track=2 \
--transition composite:21%,11%:100%x100%:50 end=61%,41%:100%x100% out=99 a_track=3 b_track=1 \
--transition composite:20%,10%:100%x100% end=60%,40%:100%x100% out=99 a_track=3 b_track=0 \
--transition composite:85%,80%:10%x10%:30 out=1000 a_track=3 b_track=2 \
+-transition composite:21%/11%:100%x100%:50 end=61%/41%:100%x100% out=99 a_track=3 b_track=1 \
+-transition composite:20%/10%:100%x100% end=60%/40%:100%x100% out=99 a_track=3 b_track=0 \
+-transition composite:85%/80%:10%x10%:30 out=1000 a_track=3 b_track=2 \
$*