Miguel Ángel
bea32b8aae
* fix(studio): stop a Studio edit from reloading the preview as if it were external Every mutation route wrote the file without leaving a write receipt, so the watcher's broadcast of Studio's own edit arrived with no identity on it. The external-change coordinator could not tell that echo from an agent or an editor writing the file behind Studio's back, so it took the safe branch and did a full iframe reload. That reload hides the stage for the length of the reload, which is what the flash after a text edit was. Every mutation write now goes through one helper that records the receipt, and the client claims the write before the request goes out rather than after it: the server writes and the watcher fires while the request is still in flight, so a token marked from the response can arrive after the echo it was meant to match. Reproduced in the browser before and after, with the reload path traced end to end. Before, a patch-element write logged `token: null` then a reload from the coordinator; after, the same write logs the token and `suppressed: own write token`, with no reload. Adds `hf-reload-debug` (localStorage, off by default) alongside the existing `hf-resize-debug`: it records each file-change decision and its reason, plus the stack of whoever asked for a full reload. * fix(studio): claim the timeline and caption writes too, not just the DOM ones The receipt only helps when the client marked the token it sent, and the GSAP mutation writers never sent one. A drag commits through gsap-mutations, so the server minted a token the client had never seen, the change came back looking like someone else's, and the preview did the full reload the receipt was meant to prevent. Same one-line claim on both GSAP mutation writers, the timing sync's mutation call, and the caption auto-save PUT. The rollback call stays deliberately unclaimed and says why: it runs because a mutation did not converge, so the preview is on bytes nobody can vouch for and the reload is the point. Verified live: a drag-shaped update-properties on the timeline now logs `suppressed: own write token` with no reload, where it logged a coordinator reload before. * refactor(studio): keep timelineTimingSync under the size cap Claiming the timeline writes pushed this file one line past the 600-line gate. Same change as the branch made later, landed with the commit that caused it. * fix(studio): cover remaining write receipt paths * fix(studio): preserve batch write receipts * fix(cli): emit every file in a watcher burst
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