The Out Shape setting lets you define the shape of the fade-out from a clip for a fade, or from clip 1 for a crossfade.
Selects a single continuous fade curve. This creates a general-purpose fade that can be edited by dragging the curve itself.
Selects an S-shaped curve, which inverts its beginning and end characteristics. This makes it possible to fade out faster at the curve’s start and slower at its end, for example. S-shaped curves can be useful with material that is difficult to crossfade effectively. S-curves can be edited by dragging the curve in the curve editor.
Seven commonly used preset curves are provided for fast crossfade creation. These can be edited by dragging the end points of the curve in the curve editor portion of this dialog. The seven presets are as follows: