Miguel Ángel
5a5e841c5d
* fix(cli): capture the best declared favicon, not the first one
Pages routinely declare a legacy 16px .ico first and the good asset (an SVG,
or a 180x180 apple-touch PNG) after it. The capture's page evaluate kept only
{rel, href} and the download loop took whichever candidate fetched first, so
the .ico won on every such page. The dropped sizes/type attributes are the only
evidence of quality: page.html on disk does not keep the <link> tags and only
the winner's bytes are fetched, so the choice was unrecoverable downstream.
Keep sizes and type, and rank candidates before downloading: SVG first, then
the largest declared size (an unsized apple-touch-icon counts as 180), then
.ico. The loop still falls through to the next candidate when one fails to
download, so the ranking changes which icon wins, never whether one lands.
Ranking is a pure function over the declared attributes, unit-tested against
the link shapes three sites actually publish.
* fix(cli): rank a pinned-tab mask-icon below real favicons
`link[rel*="icon"]` also matches `rel="mask-icon"`, Safari's pinned-tab
asset: a single-colour silhouette drawn in a browser-chosen tint, not the
site mark. It is served as an SVG, so ranking by format alone promoted the
outline above the page's actual colour favicon.
Give mask-icon its own lowest tier rather than dropping it, so a page that
declares nothing else still lands an icon instead of none.
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: http://localhost:3002/#project/my-video
# Server: http://localhost:3002
npx hyperframes preview --port 4567
In an interactive terminal, the preview stays attached until you press
Ctrl+C. In a non-interactive shell such as a coding-agent session, the same
command starts a managed preview that survives after the command returns. Use
--background or --foreground to choose explicitly, and manage persistent
previews with --status, --stop, --list, and --kill-all. Add --json to
managed lifecycle commands for machine-readable output. --foreground --json
prints the ready-session envelope once, then remains attached until stopped.
normalize-audio
Measure two local authored audio clips with integrated LUFS and match the target
to the unchanged reference. The command is a dry run unless --write is passed:
npx hyperframes normalize-audio --reference target-audio --target user-audio
npx hyperframes normalize-audio --reference target-audio --target user-audio --write
It updates only the target element's data-volume and refuses unsafe boosts
that exceed Studio's +12 dB ceiling or would clip.
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