Vance Ingalls
0126db7712
Twelve of the stack's feature commits landed on main as squashes (#3274 through #3292, plus #3401's canary removal); the 96 review-and-fix commits that followed them here did not, and main moved 64 commits on in the meantime. This reconciles the two. 58 files conflicted. 44 were audio-only — main's side there is the squashed form of commits this branch already carries and has since superseded, so the branch side stands. The rest needed real work, in both directions: **Taken from main, absent here.** - `ensureAudioGroupInertStyle` (#3278's review). An `<hf-audio-group>` is an unknown custom element, so it still takes a flex/grid slot and can open a line box — adding a group shifted authored layout. The helper and its `init.ts` call never came back to the branch, and this branch is what emits the element. - `#3383`'s ended-audio replay: `canSeekEndedMediaBackward` and its five siblings in `media.ts`, with all six tests. Not present here in any form. - `#3380`'s `asetpts=N/SR/TB` between `apad` and `atrim`. Also applied to `mixGroupMembers`, the group submix, which is new on this branch and so had the same bug in a path main's fix could not reach: delayed members padded then amix'd, where a group of four or more silently loses one. - `#3401`'s `displayNumber` thread. The header derives its row from the group-aware order and the undo label from ascending element keys, so once a group exists the same click said "Hide track 2" and recorded "Hide track 1". - `#3413`/`#3421`'s viewport handling — the popover's height cap and `inset()`, and `resolveFloatingPanelPosition` for the grouping dialog, which lives in a track header at the bottom of the window. - Two extractions this branch had inline and at exactly the 600-line cap: `useTimelineDeleteOps` and `editingModeSlice`. Bodies were identical. **Kept from the branch, against main.** Mute and solo are gone by deliberate breaking change (`remove mute and solo from tracks and groups`, `remove the group volume slider and level meter`), so eight files main still carries are deleted again, `PlayerControls` keeps no `previewIframeRef` (it existed only to feed `SoloBanner`), the group-levels branch comes out of main's new `previewMessageRouter`, and `STRIP_H` goes with the bus strip it sized. Main's `TimelineTrackPlainHeader.test.tsx` is rewritten against the control that actually exists — the visibility eye, withheld from an audible audio row and offered back once hidden, which is the only way out of `data-hidden`. **Unioned.** `TimelineFxPopover` — main's positioning, this branch's audition telemetry (`auditionPresetChain`, `storedChain`, `onAuditionTracked`); `SKILL.md` — main's #3416 "keep the carve group a voice group" beside this branch's bus section, with the canary paragraph dropped since the canaries no longer exist. Every port is mutation-checked. core 2508, studio 4460, lint 528, engine 1630, cli 2813, sdk 549, producer green; tsc, oxlint, oxfmt, fallow and the 600-line cap clean.
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