Add a FIFO semaphore to limit concurrent renders in the producer server,
preventing Chrome CPU contention that causes beginFrame failures.
- New Semaphore utility class (packages/producer/src/utils/semaphore.ts)
- Both blocking render and SSE renderStream handlers acquire/release the semaphore
- SSE stream sends a "queued" event when request must wait
- New GET /render/queue endpoint exposes active/queued render counts
- Configurable via HandlerOptions.maxConcurrentRenders or PRODUCER_MAX_CONCURRENT_RENDERS env var (default: 2)
- New --max-concurrent-renders CLI flag (1-10)
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
## Summary
- Adds `--format mov` to the render CLI for ProRes 4444 transparent video output
- ProRes 4444 with alpha is the industry standard for transparent video overlays, supported by CapCut, Final Cut, Premiere, DaVinci, and After Effects
- WebM VP9 alpha technically works but is ignored by all major video editors — only browsers decode it
- Adds MOV to the studio export dropdown alongside MP4 and WebM
## Transparency format comparison
| Format | Codec | Alpha | Video editors | Browsers | File size |
| --- | --- | --- | --- | --- | --- |
| **MOV** | ProRes 4444 | Yes | CapCut, Final Cut, Premiere, DaVinci, After Effects | No (won't play in browser) | Large (~5-40 MB) |
| **WebM** | VP9 | Yes | None (shows black) | Chrome, Firefox | Small (~200 KB) |
| **MP4** | H.264 | No | All | All | Small |
> **Note:** ProRes MOV files do not play in Chromium browsers — they are an intermediate/editing format, not a delivery format. Use [rotato.app/tools/transparent-video](https://rotato.app/tools/transparent-video) to verify transparency works correctly.
## Changes
- **CLI**: Add `mov` to `--format` validation, examples, and output path logic
- **Engine**: `getEncoderPreset()` returns ProRes 4444 (`yuva444p10le`) for `mov` format; handle `.mov` in `applyFaststart` and `muxVideoWithAudio`; add `pix_fmt` to streaming encoder ProRes path
- **Producer**: Treat `mov` like `webm` for alpha capture (PNG frames, screenshot mode, `forceScreenshot`)
- **Studio**: Add MOV option to export format dropdown and render queue hook
- **Core**: Add `mov` to studio API types, render route, and mime helpers
- **Tests**: Add encoder preset tests for mov format (42 total, all passing)
## Usage
```bash
hyperframes render --format mov --output overlay.mov
```
## Test plan
- [x] `pnpm build` passes
- [x] `pnpm --filter @hyperframes/engine test` — 42 tests pass (2 new for MOV)
- [x] `oxlint` and `oxfmt` clean on all 12 changed files
- [x] End-to-end local render produces ProRes 4444 (`yuva444p12le`) with working alpha
- [x] Docker render with `--format mov` — ProRes 4444 confirmed via ffprobe
- [x] Studio dropdown shows MOV option in built JS
- [x] Transparency verified with [rotato.app/tools/transparent-video](https://rotato.app/tools/transparent-video)
## Summary
- **The `--docker` flag was a no-op stub** — `renderDocker` called the same local `executeRenderJob` as `renderLocal`, no container was ever launched
- Now `renderDocker` generates a Dockerfile, builds a versioned `hyperframes-renderer:<version>` image with Chrome/FFmpeg/fonts/chrome-headless-shell, and runs the render inside a container
- Image is cached per CLI version — first render builds (~2 min), subsequent renders reuse it
- Forces `linux/amd64` platform since chrome-headless-shell has no ARM Linux binary
- Uses `execFileSync` (array form) throughout to prevent shell injection
- Forwards `--quiet`, `--gpu`, and render config flags into the container
- `Dockerfile.render` added as a reference for manual builds
## Test plan
- [x] `hyperframes render --docker` builds image and produces valid MP4
- [x] Second run reuses cached image (no rebuild)
- [x] `--quiet` suppresses container output while keeping stderr for errors
- [x] Typecheck, lint, format all pass
- [ ] Verify `--gpu` with `--docker` on a machine with GPU access
🤖 Generated with [Claude Code](https://claude.com/claude-code)
## Summary
Addresses all 8 issues from the QA report to improve agent and user experience.
### P0 — Must Fix
- **Blank template broken captions**: Removed `compositions/captions.html` and its reference from the blank template. Every agent (10/10) hit 404 errors during render.
- **Inner-wrapper example**: Added a clear structural comment in the blank template showing the correct `class="clip"` + inner wrapper pattern.
- **Sub-composition introspection**: `hyperframes compositions` now reads external HTML files referenced via `data-composition-src` and shows their real duration/element count instead of `0.0s / 0 elements`.
### P1 — Fix Soon
- **Font mapping warnings**: Now lists all mapped fonts, suggests alternatives (use a mapped font, add @font-face, install locally), and links to docs.
- **Browser 404s**: Non-font "Failed to load resource" 404s now prefixed with `[non-blocking]` instead of `[Browser:ERROR]`.
- **Render concurrency**: Default workers increased from `cores/2` (max 4) to `cores*3/4` (max 6). Added `--concurrency` alias.
### P2 — Nice to Have
- **Transform conflict fix suggestion**: `gsap_css_transform_conflict` now suggests exact GSAP property replacements (e.g., `xPercent: -50, yPercent: -50`).
- **Upgrade --yes**: Now actually runs the install instead of just printing the command.
## Before / After
### Font mapping warning
**Before:**
```
[Compiler] No deterministic font mapping for: DM Sans
```
**After:**
```
[Compiler] No deterministic font mapping for: DM Sans
Mapped fonts: arial → inter, courier → jetbrains-mono, ...
To fix, pick one:
1. Use a mapped font name instead (see list above)
2. Add a @font-face block in your HTML with a local or hosted font file
3. Install the font locally on the render machine (Docker: add to Dockerfile)
4. Add an alias to FONT_ALIASES in deterministicFonts.ts (for contributors)
```
### Browser 404s during render
**Before:** `[Browser:ERROR] Failed to load resource: the server responded with a status of 404`
**After:** `[non-blocking] Failed to load resource: the server responded with a status of 404`
### Transform conflict lint
**Before:** `Fix: Remove the transform from CSS and use tl.fromTo...`
**After:** `Fix: Remove transform: translate(-50%, -50%) from CSS and replace with GSAP properties: xPercent: -50, yPercent: -50`
### Compositions command
**Before:**
```
overlay 0.0s 1920×1080 0 elements
```
**After:**
```
overlay 8.0s 1920×1080 2 elements ← compositions/overlay.html
```
## Test plan
- [x] All 422 core tests pass
- [x] TypeScript compiles cleanly (all 4 packages)
- [x] Full monorepo build succeeds
- [x] `hyperframes init --template blank` ships without broken captions reference
Move per-command examples from the centralized `help.ts` record into
each command file as `export const examples: Example[]`. help.ts now
dynamically imports them at --help time.
This means adding a new command and its examples happens in one file
instead of two, reducing the chance of forgetting examples.
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat(cli): improve --help with grouped commands and per-command examples
Replaces citty's flat COMMANDS list with kubectl-style grouped categories
and adds examples to every subcommand. Root help now groups 14 commands
into 5 categories (Getting Started, Project, Tooling, AI & Integrations,
Settings). Per-command --help now appends a formatted Examples section
with practical usage patterns.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* refactor(cli): use shared colors, lazy-load help, fix description drift
- Replace hand-rolled ANSI helpers with existing ui/colors.ts (fixes
non-conformant NO_COLOR handling)
- Add cyan and gray to shared color module
- Lazy-load help.ts via dynamic import to avoid allocating help data
on non-help invocations
- Fix description drift: benchmark and transcribe descriptions now
match their command meta.description
- Unify tuple order: ROOT_EXAMPLES now uses [comment, command] to
match COMMAND_EXAMPLES
- Remove redundant comment restating type annotation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(cli): resolve typecheck error in showUsage generic signature
The lazy-load wrapper needs to cast CommandDef<T> to CommandDef when
forwarding to the help module, since TypeScript's generic variance
makes the direct assignment incompatible.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* chore(cli): remove kubectl references from help comments
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
## Summary
- **Lint rules** catch media elements missing `id` (renderer silently skips them), missing `src`, `preload="none"` (blocks renderer), and video nested in timed divs (freezes playback). Upgraded `video_nested_in_timed_element` from warning to error.
- **Compiler** strips `preload="none"` from media during compilation. Runs parallel, cached keyframe interval analysis via ffprobe — warns on sparse keyframes (>2s) that cause seek failures and audio/video desync. Suggested ffmpeg command preserves audio (`-c:a copy`).
- **Pre-render lint** lints `index.html` + all `compositions/*.html` sub-compositions before render via shared `lintProject()` helper. Warns by default; `--strict` blocks on errors, `--strict-all` blocks on errors + warnings.
- **Render orchestrator** logs a hint to retry with `--workers 1` when parallel capture times out on video-heavy compositions.
- **Refactor**: extracted `runFfprobe()` + `parseProbeJson()` helpers to deduplicate ~80 lines of spawn boilerplate across 3 ffprobe functions. Extracted `shouldBlockRender()` so strict flag tests exercise production code. Shared `lintProject()` used by both `lint` and `render` commands.
## Context
Discovered during a real composition build session where:
1. `<audio>` without `id` rendered silently (preview worked fine because runtime queries `[data-start]`, but renderer queries `[id][src]`)
2. `<video>` inside timed `<div>` froze on first frame
3. `preload="none"` caused 45s renderer timeout
4. YouTube clips with sparse keyframes from `yt-dlp --download-sections` caused audio/video desync
5. Parallel workers timed out on video-heavy compositions
## Test plan
- [x] Core: 365/365 tests passing (5 new lint tests)
- [x] Engine: 24/24 tests passing
- [x] CLI: 14/14 tests passing (7 lintProject + 7 shouldBlockRender)
- [x] Lint + format hooks pass
- [ ] Manual: create a composition with `<audio data-start="0" src="test.wav">` (no id) — verify `npx hyperframes lint` catches it
- [ ] Manual: run `npx hyperframes render --strict` with lint errors — verify it blocks
- [ ] Manual: run `npx hyperframes render --strict-all` with lint warnings — verify it blocks
## 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
* feat(cli): add system metrics to telemetry and expand doctor command
Enrich render telemetry with device/environment metadata (CPU, memory,
OS, Docker/CI/WSL detection) following patterns from Next.js and
Turborepo. Add speed_ratio (render time / composition duration),
per-frame capture timing, and resource usage to render events.
Expand the doctor command with CPU, memory, disk, /dev/shm, and
environment checks to help debug rendering issues on user machines.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(cli): invert speed_ratio to match experiment-framework convention
composition_duration / render_time — higher is better, >1 means faster
than realtime. Matches magic_edit.render.speed_ratio in experiment-framework.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(cli): wire errorMessage into render error telemetry
Address review feedback — the errorMessage field was declared in the
trackRenderError interface but never populated.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat(cli): add render telemetry to embedded studio server
Track render_complete and render_error from the studio's render API
endpoint (hyperframes dev). Uses dynamic imports so telemetry is
resolved at call time within the CLI package — no telemetry coupling
added to @hyperframes/studio or @hyperframes/producer.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Compute CPU_CORE_COUNT once at module level instead of calling cpus()
multiple times
- Make RenderOptions.workers required (number, not optional) — the
caller resolves the default, callees don't re-derive it
- Remove redundant existsSync guard before mkdirSync({recursive})
- Trim oversized JSDoc on defaultWorkerCount
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Replace the hardcoded default of 4 workers with a CPU-aware heuristic:
half of available CPU cores, capped at 4. Each worker spawns a separate
Chrome browser process (~256MB RAM each), so the previous default of 4
caused resource contention on smaller machines.
The new defaults:
2-core laptop → 1 worker
4-core laptop → 2 workers
8-core desktop → 4 workers
16-core server → 4 workers (capped)
Also adds --workers auto flag support, improves help text to explain
what workers do, and adds a Workers section to the rendering docs with
guidance on when to increase or decrease parallelism.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Engine: document getEncoderPreset() for MP4/WebM, VP9 alpha flags,
Opus audio in mux step
- Producer: document format field in RenderConfig, WebM usage example,
pipeline steps updated for WebM
- CLI: add render command examples in --help (including WebM overlay)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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>
- version.ts: replace hardcoded "0.1.0" with __CLI_VERSION__ injected by
tsup at build time from package.json — fixes version mismatch where
`hyperframes --version` reported 0.1.0 while package was 0.1.4
- tsup.config.ts: add define.__CLI_VERSION__ using package.json version
- render.ts: renderDocker error handler showed "Try --docker" even when
already using --docker — changed to "Check Docker is running: docker info"
- dev.ts: add missing --port arg to embedded mode; findAvailablePort now
starts from the user-supplied port instead of hardcoded 3002
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
The CLI's ensureBrowser() finds Chrome via env var, cached download,
or system paths (including /Applications/Google Chrome.app on macOS).
But the result was discarded — the engine's acquireBrowser() only
checked the puppeteer cache for chrome-headless-shell, passing
undefined executablePath on macOS without headless-shell installed.
Bridge the two by setting PRODUCER_HEADLESS_SHELL_PATH from the CLI's
resolved browser path before creating the render job, so the engine's
resolveConfig() picks it up.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add anonymous usage telemetry to help improve the CLI. Uses PostHog's
HTTP batch API directly (zero new dependencies) with a 5-second timeout
and fail-silent behavior — telemetry never breaks the CLI.
What's collected: command names, render performance (duration, fps,
quality), template choices, OS/arch/Node version/CLI version.
What's NOT collected: file paths, project names, video content, or
any personally identifiable information.
Telemetry is:
- Disabled in dev mode (running via tsx)
- Disabled in CI (CI=true) or via HYPERFRAMES_NO_TELEMETRY=1
- Disabled when API key is placeholder (safe to merge before key is set)
- Controllable via `hyperframes telemetry [enable|disable|status]`
- Disclosed on first run with clear opt-out instructions
Config stored at ~/.hyperframes/config.json (0600 permissions).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat: initial code port from hyperframes-internal
Port all OSS-ready packages from the internal monorepo:
- @hyperframes/core — shared types, HTML generation, GSAP utilities, runtime
- @hyperframes/cli — CLI for creating, previewing, and rendering compositions
- @hyperframes/engine — framework-agnostic rendering engine (BeginFrame + FFmpeg)
- @hyperframes/producer — video rendering pipeline (Puppeteer + FFmpeg)
- @hyperframes/ui-player — browser-based video player component
- @hyperframes/studio — composition editor (React frontend + Hono backend)
Includes regression test suite with Docker-based test harness.
All HeyGen-internal references, deployment infrastructure, and
proprietary assets have been removed. Package names migrated
from @app/* to @hyperframes/*.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: scrub internal codenames and stale references from OSS port
- Replace static.heygen.ai runtime URLs in test fixtures
- Remove internal CDN publish script (publish-hyperframe-runtime.ts)
- Replace sandbox-studio, sandbox-interceptor, __magicEditRuntime
with neutral names (studio, hyperframe-runtime, __hyperframeRuntime)
- Fix stale Vault API / localhost references in docs
- Remove broken deprecated_studio link
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: remove remaining internal codenames and stale references
- Delete stale producer README.md and PIPELINE.md (referenced nonexistent files)
- Replace "Cerberus" codename with "HyperFrames" in test design reviews
- Replace magic-edit postMessage identifiers with hf-preview/hf-parent
- Rename debug-magic-edit-timeline.ts to debug-timeline.ts
- Replace "Motion Cut" with "HyperFrames" in Timeline comments
- Fix studio/CLI references to nonexistent archive package
(use local data/projects/ dir, stub render proxy)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
