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JamesandClaude Opus 4.6
15f6b86ac0
Support rendering compositions with transparent backgrounds via `--format webm`. VP9+alpha is the standard format for overlayable video (captions, lower thirds, overlays). Changes by layer: - CLI: `--format mp4|webm` flag on render command - Producer: threads format through RenderConfig, switches to PNG capture and VP9 encoding when webm - Engine: getEncoderPreset() returns VP9 config with yuva420p; transparent page background via CDP when capturing PNG; mux uses Opus audio for WebM; VP9 flags from production: -row-mt 1, -auto-alt-ref 0, alpha_mode=1 metadata - Frame capture: Emulation.setDefaultBackgroundColorOverride a=0 Co-Authored-By: Claude Opus 4.6 (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
dev
Start the live preview studio in your browser:
npx hyperframes dev
# Server running at http://localhost:3000
# Watching for changes...
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.html
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
Upgrade Hyperframes to the latest version:
npx hyperframes upgrade
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