I want to crossfade pos6 into pos5, the crossfading itself is smooth, but
the below script gives me an abrupt transition at the start of the
crossfade (at pos6), how can I fix that?!
view pos4
wait 30;
movie record supersample 3 size 1920,1080
view pos6 50
wait 50;
crossfade 50; view pos5
wait 50;
movie encode IJ_movie3.mp4 quality high