melt clip1.dv \
-track txtField.swf variables="title=My Title&subtitle=The Subtitle" out=120 \
-transition composite geometry="0/0:100%x100%:80%;100=0/0:100%x100%:80%;119=0/0:100%x100%:0" \
a_track=0 b_track=1 out=120 progressive=1 \
$*