Motion
Stepped for arrivals, fluid for glides
Hold frames on discrete pop-ins; never on a smooth single-direction move.
Takeaways
- Stepped: pop-ins, assembly, hits on the beat.
- Fluid: scrolls, pans, pushes, glides, orbits.
- Mix them inside one beat if you like; just not on one object.
What it means
Stepped motion, on twos or threes, gives pieces that assemble or jump a graphic rhythm. Applied to a scroll, pan or camera push it just looks like dropped frames. So the cards pop in stepped while the strip beneath them scrolls fluid.
In a RasanAI film
A beat marked stepped is checked against its named moves. If it contains a scroll, pan, push, glide or orbit, the gate warns. The usual fix is to step only the pop-ins and leave the scroll smooth.
Origins and sources
RasanAI launch grammar, studied from real launch films. An engine rule, not an academic law.