AI masks are fast for object selection
SAM2 mask layers let you click an object in the viewer, confirm the selection, and generate mask frames across the sequence. The Tiny model is fast for simple demos, while larger models can improve quality at a higher processing cost.
Polygon masks are reliable for simple shapes
Animatable polygon masks are useful when the shape is simple, when AI needs correction, or when you want deterministic control. You can add keyframes and let the mask interpolate through the shot.