Via
490642b78a
Addresses C1-C7 from Rames's adversarial review + N2/N3 nits:
- C1 (positionFixed): inline probe now value-scopes to 'fixed' — previously
fired on any position value (absolute, relative, sticky), producing a
false-positive anatomy that would mislead maintainers pattern-matching
the 'sub-comp + position:fixed capture' bug family.
- C2 (overflowHidden): symmetric fix — inline path now catches
style='overflow: hidden' via the value-scoped probe, matching the
<style>-tag branch. Also handles overflow-x/overflow-y variants.
- C3 (VISUAL_DEFECT_KEYWORDS): drop 'render' — CLI's primary command is
'hyperframes render', so build/perf/hang reports were triggering an
inappropriate COMPOSITION_STRUCTURE: nudge on the most common failure
mode. Rely on the more specific tokens (black, blank, flicker, corrupt,
wrong frame) to identify actual visual defects.
- C4 (mentionsVisualDefect): compile keywords into a word-bounded regex.
'blackboard', 'blanket', 'visualize', 'corruptible' no longer false-
positive. Accepted tradeoff: plural forms ('flickers') don't match.
- C5 (marker case-normalization): REPRO COMMAND: / COMPOSITION_STRUCTURE:
checks now case-insensitive, matching mentionsVisualDefect's
normalization. Reporters using 'Repro command:' or lowercase
'composition_structure:' get credit for compliance.
- C6 (background/mask shorthand): inline branch previously required the
longhand 'background-image:' / 'mask-image:' — style='background:
url(bg.png)' silently returned false. Now checks both longhand AND
shorthand-with-url() inline forms.
- C7 (usesGsap docstring): trim promise of data-gsap-* attribute scanning
that detectGsap never implemented — attribute scan lives outside the
<script>-only detection path.
- N2 (EMPTY_VALUES): include 'inherit', 'revert', 'revert-layer' — a
style='position: inherit' is authored intent to defer, not authored
intent to place.
- N3 (input size cap): early-exit to a zero census on HTML > 20 MB
rather than feeding linkedom a hostile input. Not expected in normal
usage; guard for future callers that might pass raw user uploads.
Extends the test locks: 6 new census tests (value-scoping, size cap) and
5 new lint tests (word-boundary rejections, render-noise rejections,
lowercase-marker acceptance). All existing tests unchanged in intent —
only the 'flickers' plural in one test updated to 'flicker' to reflect
the new word-boundary rule.
No behavior change to the wire path: lint is still soft-warn, census is
still never called from feedback.ts, no new dependencies.
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