Ownership detection classified ANY defined HF_DE_PARALLEL_ROUTER as a user choice, but both parsers read empty/whitespace as "unset -> default ON". Launching with `HF_DE_PARALLEL_ROUTER=` therefore routed the render (empty parses as ON) while exempting the install from its circuit breaker: after a verified fallback applyDeParallelRouterBreaker() no-op'd, so the install kept retrying the failing router instead of latching off. That is the exact first-fallback protection this PR exists to provide, lost on a documented default path. Ownership now uses the same normalization as the parsers. Also: only announce a trip the breaker could act on. With an explicit user opt-in the breaker is deliberately a no-op, so "now off for this install" was factually wrong — and reprinted on every later revert, since the user's value keeps the router active. Tests: set-but-empty and whitespace both latch off and persist the fired flag (fault-injection verified — restoring the old check fails both); explicit "true" survives a fallback. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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. Run from the project directory; the positional
argument is the project directory (not a file), so render the project's
index.html directly, or point at a specific composition file with -c:
npx hyperframes render -o output.mp4
npx hyperframes render -c ./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