A real-science premise (photon random-walk, 8 min 19 s light travel time, planetary passes at true light times) gives the open-ended brief a concrete, surprising hook.
Sound and picture share one data source: the audio script reads the same bounce data as the animation, so visual events and clicks line up.
Everything is generated in code with no stock footage or images, which keeps the look consistent and tied to the data.
A single-subject story (one photon's journey) gives the 20-second runtime a clear arc from origin to destination.
Reference prompt
Remix template
make a 20-second video about [PRODUCT], covering [FEATURES]; make it crazy