-inigo \
--blank 49 colour:red out=25 -blank 999 \
+melt \
+-blank 49 colour:black out=25 -blank 999 \
-track \
clip3.dv in=200 out=275 \
-track \
clip2.dv in=200 \
-transition \
composite in=50 out=75 a_track=0 b_track=1 \
-start=0,0:100%x100%:100 \
-end=100%,0:100%x100%:100 \
+start=0/0:100%x100%:100 \
+end=100%/0:100%x100%:100 \
-transition \
composite in=50 out=75 a_track=0 b_track=2 \
-start=-100%,0:100%x100%:100 \
-end=0,0:100%x100%:100 \
+start=-100%/0:100%x100%:100 \
+end=0/0:100%x100%:100 \
-transition \
mix:-1 in=50 out=75 a_track=1 b_track=2 \
$*