2D Modifier - Travel 1 frame into the past
Add a one frame delay by modifier. To say it short, you'll need 40 modifiers stacked one after the other in order to get a 40 frames delay.
Then you can also play with masks and have fun ^^. Don't forget to group them (Ctrl+shift+G) if you got many.
Remember that frame delay consume a great amount of Vram.
- Blending Mode
( Blending Mode): How this frame delay gets blended
PARAMETERS COMMON TO ALL FRAME DELAY BASED MODIFIERS
- Rasterize Quality
Rasterize quality of the frame delay
In same group: Frame Delay based Modifier
and Optical Flow