Two review findings on the floor/telemetry PR: 1. powerStateFields() is spread into the properties object at the CALL SITE, so it ran before trackEvent's own `if (!shouldTrack()) return` guard — telemetry-disabled installs paid two blocking `pmset` subprocess spawns per render for an event that was then discarded. Now short-circuits on shouldTrack() (memoized, so no cost on the tracked path). Regression test asserts pmset is not sampled when telemetry is off; fault-injection verified it fails without the guard. 2. The DE parallel router pinned workerCount to 3 and skipped calibration even when verified parallel DE STREAMING — the entire reason for the pin — could not run for that render. The common case is a composition over streamingEncodeMaxDurationSeconds (240 s default): the duration cap disables streaming before the router's force flag is consulted, so the render got a hard-coded 3 workers chosen by a benchmark for a path it was not on, instead of the calibrated count. shouldPreferParallelDrawElement now takes parallelStreamingAvailable and withholds the bet without it. Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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