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https://github.com/heygen-com/hyperframes.git
synced 2026-09-03 04:38:33 +00:00
Miguel Angel Simon Sierra
9f6c20e482
Extending a clip past the video end used to force the server-fallback path that fully remounts the preview iframe (the SDK fast path can't express the root composition's data-duration, and the runtime bakes+drops data-duration at load so it can't be patched live). On a large comp that remount is a visible hitch. Add a runtime control-bridge action set-root-duration -> clock.setDuration, so the studio can grow the transport length in place. On an extend the studio now posts it (and patches the clip's own timing live) instead of reloading; it only reloads when a GSAP source rewrite actually happened (the gsap-mutation endpoints now report a mutated flag). Non-animated extends — the common case — commit as fast as a normal edit. Verified: bridge dispatch + studio no-reload/post-message paths unit- tested; core/studio/studio-server typecheck + suites green; the built runtime artifact carries the handler; E2E confirms the extend no longer remounts the preview and still persists.
@hyperframes/core
Types, parsers, generators, compiler, linter, runtime, and frame adapters for the Hyperframes video framework.
Install
npm install @hyperframes/core
Most users don't need to install core directly — the CLI, producer, and studio packages depend on it internally.
What's inside
| Module | Description |
|---|---|
| Types | TimelineElement, CompositionSpec, Asset, canvas dimensions, defaults |
| Parsers | parseHtml — extract timeline elements from HTML; parseGsapScript — parse GSAP animations |
| Generators | generateHyperframesHtml — produce valid Hyperframes HTML from a composition spec |
| Compiler | compileTimingAttrs — resolve data-start / data-duration into absolute times |
| Linter | lintHyperframeHtml — validate Hyperframes HTML (missing attributes, overlapping tracks, etc.) |
| Runtime | IIFE script injected into the browser — manages seek, media playback, and the window.__hf protocol |
| Frame Adapters | Pluggable animation drivers (GSAP, Lottie, CSS, or custom) |
Frame Adapters
A frame adapter tells the engine how to seek your animation to a specific frame:
import { createGSAPFrameAdapter } from "@hyperframes/core";
const adapter = createGSAPFrameAdapter({
getTimeline: () => gsap.timeline(),
compositionId: "my-video",
});
Implement FrameAdapter for custom animation runtimes:
import type { FrameAdapter } from "@hyperframes/core";
const myAdapter: FrameAdapter = {
id: "my-adapter",
getDurationFrames: () => 300,
seekFrame: (frame) => {
/* seek your animation */
},
};
Parsing and generating HTML
import { parseHtml, generateHyperframesHtml } from "@hyperframes/core";
const { elements, metadata } = parseHtml(htmlString);
const html = generateHyperframesHtml(spec);
Linting
import { lintHyperframeHtml } from "@hyperframes/core/lint";
const result = lintHyperframeHtml(htmlString);
// result.findings: { severity, message, elementId }[]
Documentation
Full documentation: hyperframes.heygen.com/packages/core
Related packages
@hyperframes/engine— rendering engine that drives the browser@hyperframes/producer— full render pipeline (capture + encode)hyperframes— CLI