- A long-lived preview cached its telemetry posture in two places (readConfig and shouldTrack). Running `telemetry disable` in another terminal left it resolving canaries and injecting the CLI id for hours. Both caches are now dropped together at a request boundary. - Studio minted and shipped a telemetry id for every render regardless of the browser profile's opt-out, and the server emitted the outcome under CLI policy, which cannot see localStorage or DNT. The browser now sends an explicit telemetryOptOut, distinct from an old client's omission. - Any non-empty HYPERFRAMES_PREVIEW_HOST disabled the DNS-rebinding guard, so even a loopback bind accepted a hostile Host. The guard now holds for loopback binds and, on a LAN bind, admits only names this machine answers on. - sunsetAfter had no reader of the current date. A scheduled workflow runs scripts/check-canary-sunset.ts weekly, so a failure lands on the rollout's owner rather than on an unrelated PR author. - The install-state seed memo outlived `rm -rf ~/.hyperframes`, resurrecting a cleared cohort. Removed; it only saved a read on a readConfig cache miss. Docs updated for the Host rule and the 100% exclusion carve-out. 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