research.m1stereo.tv/gitweb/ - melted/blob - demo/mlt_intro

   1 inigo \
   2 music1.ogg in=100 out=224 \
   3 -track \
   4 watermark1.png out=124 \
   5 clip3.mpeg \
   6 -mix 25 \
   7 -mixer luma resource=luma1.pgm softness=0.2 \
   8 -transition mix:-1 in=100 out=124 \
   9 $*