Miguel Ángel
9175eced45
Extend `inspect` to verify motion intent against the same seeked timeline
the renderer uses, catching render-≠-preview bugs that layout sampling can't:
entrance reveals the seek skips, broken stagger order, off-frame drift, and
frozen shots.
A `*.motion.json` sidecar next to the composition opts in (auto-discovered,
no flag, no authoring-framework changes); without one, inspect is unchanged.
inspect seeks a dense grid over the asserted selectors, builds an
element × time matrix of {rect, opacity, visible} plus per-scope liveness
signatures, and evaluates four assertions in Node:
appearsBy -> motion_appears_late
before -> motion_out_of_order
staysInFrame -> motion_off_frame
keepsMoving -> motion_frozen
A selector matching nothing is reported as motion_selector_missing rather
than silently passing. Findings reuse the LayoutIssue shape and flow through
the existing dedupe/collapse/limit/format pipeline and JSON envelope; they
are errors by default, so a failed assertion fails the run.
The motion pass runs in the same Chrome session as the layout audit (no extra
launch) and only when a sidecar is present.
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