JamesandClaude Opus 4.7
ec1b7e1eff
`--width 3840 --height 2160` against a composition with `data-width="1920"` silently produces a 1080p output because the runtime lays out the page at the composition's authored dimensions — real footgun we hit during a cost-analysis sweep. Warn early and point at `--output-resolution` (the supersampling escape hatch) so the user doesn't burn a 30-minute render learning the override rule. Skipped when `--output-resolution` is set (the supported supersampling path — the user is opting in), when `--json` is set (machine consumers), or when `index.html` isn't on disk (typical with `--site-id`). Helper lives in a shared module so render + render-batch agree on the parse + message. Tests cover both attribute orders, single/double quotes, the silent paths, and the warning path. Best-effort regex over the canonical attr shape — malformed HTML falls through to no warning rather than blocking the render. Co-Authored-By: Claude Opus 4.7 (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:
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