ukimsanov
0730f88dc7
Incorporates four review points on #348: 1. Fix typecheck error — cast the dynamic `@hyperframes/engine` import to a typed shape and drop the `as typeof x` cast on a `null`-unioned variable that TS rejected. CI `Typecheck` was failing on main because the cast conflicted with the declared union. 2. Clear stale injected <img> overlays — always call `syncVideoFrameVisibility(page, activeIds)` on every seek (including `active.length === 0`), so injected frames from a previous timestamp don't leak into later snapshots. The runtime's visibility toggles act on the native <video> but not on its injected sibling, which Copilot correctly flagged as a leakage source. 3. URL-decode the served video path before resolving to a filesystem path. Files whose names contain spaces or other URL-encoded characters were skipped because `new URL().pathname` preserves `%20` while the file server decodes inbound requests and the file on disk lives at the decoded name. 4. Mirror `packages/core/src/runtime/media.ts` media math so clips with a non-1 `defaultPlaybackRate` get the correct active window and relTime. Specifically: clamp `defaultPlaybackRate` to [0.1, 5], apply `(t - start) * rate + mediaStart`, and adjust the duration-fallback branch by `/ rate` when only source duration is known. 5. Kill FFmpeg on a 30s timeout so a pathological clip cannot wedge snapshot indefinitely. Matches the default in `@hyperframes/engine`'s `runFfmpeg`. Re-verified against the same 4-timestamp A/B on launch-video-2: MD5s match the ffmpeg-from-render ground truth 12.5s → ef9684e36fea53a0db7adf7cfcaacad3 (Stripe) 16.0s → 487494ca16344d55d7181408dc439a56 (Framer) 20.5s → 8835c34ad2a45755a1c98a7e079427a1 (HeyGen 3D) 32.5s → 34dc9450f2bd661c12039d7aa82a30b0 (GitHub finale) No-video projects (basecamp-tour, linear-brand, commissioned/github) still produce identical output to the pre-fix path. Latency unchanged. Made-with: Cursor
hyperframes
CLI for creating, previewing, and rendering HTML video compositions.
Install
npm install -g hyperframes
Or use directly with npx:
npx hyperframes <command>
Requirements: Node.js >= 22, FFmpeg
Commands
init
Scaffold a new Hyperframes project from a template:
npx hyperframes init my-video
cd my-video
preview
Start the live preview studio in your browser:
npx hyperframes preview
# Studio running at http://localhost:3002
npx hyperframes preview --port 4567
render
Render a composition to MP4:
npx hyperframes render ./my-composition.html -o output.mp4
lint
Validate your Hyperframes HTML:
npx hyperframes lint ./my-composition
npx hyperframes lint ./my-composition --json # JSON output for CI/tooling
npx hyperframes lint ./my-composition --verbose # Include info-level findings
By default only errors and warnings are shown. Use --verbose to also display informational findings (e.g., external script dependency notices). Use --json for machine-readable output with errorCount, warningCount, infoCount, and a findings array.
compositions
List compositions found in the current project:
npx hyperframes compositions
benchmark
Run rendering benchmarks:
npx hyperframes benchmark ./my-composition.html
doctor
Check your environment for required dependencies (Chrome, FFmpeg, Node.js):
npx hyperframes doctor
browser
Manage the bundled Chrome/Chromium installation:
npx hyperframes browser
info
Print version and environment info:
npx hyperframes info
docs
Open the documentation in your browser:
npx hyperframes docs
upgrade
Check for updates and show upgrade instructions:
npx hyperframes upgrade
npx hyperframes upgrade --check --json # machine-readable for agents
Documentation
Full documentation: hyperframes.heygen.com/packages/cli
Related packages
@hyperframes/core— types, parsers, frame adapters@hyperframes/engine— rendering engine@hyperframes/producer— render pipeline@hyperframes/studio— composition editor UI