How it works
Change playback speed within one continuous shot.
Terminology boundary: Aliases vary by region and production context; the physical parameter above is the deciding clue.
14 · Capture feel and time
Speed ramp速度渐变／变速
Change playback speed within one continuous shot.
Physical change: variable playback speedtime ramp
Narrative effect
Compresses setup and emphasizes a key instant.
When to use it
Sports tricks, products, entrances, impacts.
Common mistakes
Land the slow phase on action peak; avoid flow artifacts.
SHOT PROMPT TEMPLATE
Turn the term into direction
Ramp 200%→25% before takeoff, hold through trick, 150% on landing.