Miguel Angel Simon Sierra
74ae5d6e81
Review fixes across the proxy stack: proxyTranscoder committed as UTF-8 text (literal NUL delimiters became escapes; the file was binary to git), ffmpeg children get a hard timeout so a hang can never wedge the global transcode slots, failed transcodes are negative-cached so pre-warm stops respawning doomed encodes, and client aborts after a held response no longer write to a dead socket. Alpha sources (ProRes 4444 etc.) are never proxied anywhere, preview/Studio now honor media.autoProxy and --no-proxy, the runtime swaps only when a codec map is present (opt-out surfaces stay inert) and skips browser-safe entries, the unavailable diagnostic is visible to check and devtools, play serves proxies as video/mp4 with mov/m4v/mkv recognized, the publish bake resolves srcs exactly like the scan (percent-encoded srcs now rewritten), codec probing is genuinely async off the event loop, and codec-map injection is one shared implementation across surfaces.
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