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## Summary - CLI render: use timestamped filenames (`project_date_time.ext`) matching the studio's naming convention, preventing overwrites of previous renders - studioServer: read `fps`/`quality`/`format` from POST body instead of hardcoding `fps:30`/`quality:standard`/`mp4` - studioServer: use timestamped job IDs matching the studio pattern - studioServer: fix download endpoint to serve correct content-type for WebM ## Test plan - [x] `hyperframes render --format webm` outputs timestamped WebM file - [x] `hyperframes render` outputs timestamped MP4 (no overwrite) - [x] Studio embedded server (`hyperframes dev`) renders with correct format when selected in UI - [x] Download endpoint serves correct MIME type for WebM renders
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
# Studio running at http://localhost:3002
npx hyperframes dev --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.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
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