In a fade-in or fade-out, the outgoing clip (fade-in) or incoming clip (fade-out) is a black source.
To create a fade-to-black or fade-from-black:
The fade options appear.
(a) Dissolve Type box (b) Dissolve Alignment box (c) Dissolve Duration field (d) Trail field
If the “E” button is enabled, the Dissolve Editor appears. Otherwise, the fade-in or fade-out is added to the destination reel.