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Seam Craft

heygen-com/hyperframes

Seam Craft is the render-side doctrine underneath scene-to-scene transitions in HyperFrames launch videos. It doesn't pick a transition for you. It covers the prerequisites that make any transition composite correctly on the master timeline: the injector overlapping the two clip wrappers, holding the outgoing final frame, ping-ponging tracks so overlapping wrappers never collide, and stamping lint-clean GSAP templates at the overlap start. Its most practical value is the stage-ground rule: if `#root` has no opaque background, opacity dips during crossfades and cut-the-curve windows show the white page behind, which flashes hard on dark films. Load it when you're assembling `index.html` or chasing a white flash at a seam. The per-transition catalog lives in the transition registry, so use this one for the plumbing and that one for the look.

skills.sh installs
61.1K
GitHub stars
81.8K
last updated
Oct 26, 2026
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Install

$ npx -y skills add heygen-com/hyperframes --skill seam-craft --agent claude-code

Installs into .claude/skills of the current project.

Files

Seam Craft — render prerequisites for scene-to-scene transitions

This is the render-correctness doctrine for PLV scene-to-scene seams: the prerequisites and master-timeline mechanics that make any transition composite correctly, independent of which specific transition is chosen. The per-transition catalog (crossfade, push-slide, zoom-through, cut-the-curve, …) lives in the transition registry — this page is the doctrine that sits underneath all of them.

The transitions this doctrine governs are Tier-B-ready: pure transform / opacity / filter on the two scene clip wrappers (#el-<sid>), no injected overlay DOM, no per-scene cooperation. Overlay families (staggered blocks, blinds, light leak, grid dissolve, page burn) and shader transitions are deferred to later phases.

Stage ground prerequisite (white-flash guard)

SKILL.md on GitHub

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Details

Repository
github.com/heygen-com/hyperframes
Categories
Frontend Development, Code Review & Quality, Marketing & SEO
First seen
Oct 26, 2026

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