Dam it ascii-art don't work. I hope you understand it
1111111111111111111|X2|1fadingTo2222222222222222222
and then
11111111|X2|111111111111fadingTo2222222222222222222
or with more clips below
111111|X2|11111111|X3|111111111
X2 and X3 are only one frame (the first frame) from the clips of track2 and track3
Dam it ascii-art don't work. I hope you understand it
111111111111111 1111|X2| 1fadingTo222222 2222222222222
and then
11111111| X2|111111111111 fadingTo2222222 222222222222
or with more clips below
111111| X2|11111111| X3|111111111
X2 and X3 are only one frame (the first frame) from the clips of track2 and track3