# Cut The Curve Techniques

Catalogs velocity-matched scene seams and entry techniques for HyperFrames transitions.

- Repository: https://github.com/heygen-com/hyperframes (77062 stars)
- Category: Media
- License: Apache-2.0
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add heygen-com/hyperframes --skill cut-the-curve -g -a claude-code -y`
Codex: `npx skills add heygen-com/hyperframes --skill cut-the-curve -g -a codex -y`
Cursor: `npx skills add heygen-com/hyperframes --skill cut-the-curve -g -a cursor -y`
Gemini CLI: `npx skills add heygen-com/hyperframes --skill cut-the-curve -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add heygen-com/hyperframes`

## Description

The technique catalog: five velocity-matched SEAMS (zoom-through, INVERSE zoom-through, cut-the-curve, waterfall cut, rack-focus blur-cut) plus the two in-scene techniques, waterfall ENTRY (staggered arrival cascades for title cards / segment openers) and the nudge curve (slow-fast-slow three-phase group slides). Covers partial-travel (~12% of frame) velocity matching via mirrored power4 eases, the Z scale-sign rule, size-scaled blur (10px text / 18-20px full-frame), word-by-word staggered cuts, cascade pacing by element weight, and the 10/65/25 slide ratio. Read before authoring any transition, text-beat handoff, kinetic text entry, or group reposition. [depth, zoom, inverse-zoom, scale-sign, mirrored-zoom, rack-focus, pacing, velocity, cut-the-curve, waterfall, stagger, cascade, kinetic-text, title-card, segment-opener, nudge, slide, easing, group-motion, z-depth, motion-graphics, cinematic, transition, blur, directional-continuity]

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Cut the Curve, the technique catalog

Five SEAM techniques, one principle: **cut at peak velocity, match direction and speed
on both sides of the cut**, plus the two in-scene techniques (§6 arrivals, §7 slides).
The seam LAW, vector law, the current, the ledger, the Seam Gate, lives in
`motion-doctrine`; read it first. This skill is the parameters and mechanics.
All GSAP code templates (worker + registry): `examples/gsap-implementation.md`.

## Catalog

| #   | Technique                  | Scope                          | Axis                | Use for                                                |
| --- | -------------------------- | ------------------------------ | ------------------- | ------------------------------------------------------ |
| 1   | **Zoom-Through** (forward) | Within-scene text swap         | Z, toward viewer    | progressing deeper into the same thought               |
| 2   | **Inverse Zoom-Through**   | Arrival / payoff beat          | Z, away from viewer | something bigger lands                                 |
| 3   | **Cut the Curve**          | Between scenes                 | X / Y               | the default boundary, the film's current               |
| 4   | **Waterfall Cut**          | Text-to-text seam              | X, per-word         | word-level handoff between big-text beats              |
| 5   | **Rack-Focus Blur-Cut**    | Same-surface state swap        | X / Y / Z           | the one cut you want SEEN, a DSLR focus-pull flourish |
| 6   | **Waterfall Entry**        | In-scene ARRIVAL (no seam)     | Y, from below       | title cards, segment openers, list intros              |
| 7   | **Nudge Curve**            | In-scene group slide (no seam) | X / Y               | repositioning a composed group to make room            |

## Z direction is a sign

"Same axis" is not enough on Z, the sign of d(scale)/dt must match across the cut:

The rest: https://github.com/heygen-com/hyperframes/blob/HEAD/.agents/skills/cut-the-curve/SKILL.md