No no I know what a slip edit is. A roll edit is as follows…
you have clip a and clip b. You want to change the out point of clip a and the in point of clip b without changing the length of the project.
aaaaaaaaaabbbbbbbbbb (20 frames) aaaaabbbbbbbbbbbbbbb(20 frames as well)
anywho.. anyone who has used p.pro or fcp should know what I mean.