Initial repo setup by jrusso1020 · Pull Request #1 · heygen-com/hyperframes

jrusso1020 · 2026-03-10T01:58:00Z

Summary

README.md — hero section, quick start, HTML schema example, package overview table, MCP integration section, Remotion comparison table
LICENSE — MIT (copyright HeyGen)
CONTRIBUTING.md — dev setup, conventional commit guidelines, project structure overview, PR guidelines
GitHub templates — bug report, feature request, PR template
.gitignore — Node.js/TypeScript project defaults

No code yet — just the repo scaffolding for review before we start porting packages.

Test plan

Review README content and messaging
Verify LICENSE is correct
Check issue/PR templates render properly on GitHub

🤖 Generated with Claude Code

- README with hero section, quick start, HTML schema example, package overview, and Remotion comparison - MIT LICENSE (copyright HeyGen) - CONTRIBUTING.md with dev setup, commit conventions, and project structure - GitHub issue templates (bug report, feature request) and PR template - .gitignore for Node.js/TypeScript projects Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

jrusso1020 · 2026-03-10T01:59:39Z

+*.mp4
+*.webm
+*.mov


we may have some regression tests with videos in them using git lfs something we may want to allow

jrusso1020 · 2026-03-10T02:00:04Z

+
+- [Node.js](https://nodejs.org/) 22+
+- [pnpm](https://pnpm.io/) 9+
+- [FFmpeg](https://ffmpeg.org/) (for rendering)


we need a version here probably ffmpeg, can we check what version

jrusso1020 · 2026-03-10T02:09:21Z

+3. Install dependencies: `pnpm install`
+4. Create a branch: `git checkout -b my-feature`
+
+## Development Setup


should we wait to add in this info/readme now or wait till we have more code in here?

jrusso1020 · 2026-03-10T02:10:04Z

+## Packages
+
+| Package | Description |
+|---------|-------------|
+| `@hyperframes/core` | Types, schema, parsers, compiler, runtime, frame adapters |
+| `@hyperframes/cli` | `npx hyperframes dev \| render \| validate \| init` |
+| `@hyperframes/producer` | Local rendering engine (Node.js + Puppeteer + FFmpeg) |
+| `@hyperframes/studio` | Browser-based preview/editor |
+| `@hyperframes/mcp` | MCP server for AI agent integration |
+| `create-hyperframe` | Project scaffolding (`npx create-hyperframe`) |


maybe we don't add this yet ? and have WIP/reminder to do this later

jrusso1020 · 2026-03-10T02:10:18Z

+
+## Documentation
+
+Visit [hyperframes.dev](https://hyperframes.dev) for full documentation, guides, and API reference.


not valid yet

- .gitignore: remove blanket video file ignores (may need LFS for regression test fixtures) - CONTRIBUTING.md: strip dev setup details until packages are ported (leave TODO) - README.md: strip packages table, comparison, requirements, docs link (leave TODO) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

vanceingalls

Overall this looks good — clean scaffolding, second commit addressed the earlier review comments well. A few things to consider before going public:

1. Repo URL hardcoded to heygen-com — CONTRIBUTING.md references https://github.com/heygen-com/hyperframes/issues. The launch plan listed GitHub org name as an open decision (hyperframes, hyperframes-dev, or under HeyGen org). Not a blocker for merging into a private repo, but worth deciding before launch.

2. .gitignore gaps — Missing .debug/ (producer's parity harness writes to .debug/parity-harness-ci) and *.tgz (npm pack artifacts). Minor.

3. No pnpm-workspace.yaml stub — Plan calls for a pnpm monorepo. Including the workspace config now (even with empty packages list) would make the next PR cleaner.

4. Code of Conduct — "Be respectful. We're building something together." is fine for now, but GitHub's community profile will flag it. Consider adding Contributor Covenant before going public.

5. SECURITY.md — Not needed yet, but expected for any serious OSS project before launch. How to report vulnerabilities, responsible disclosure, etc.

None of these are merge blockers — they're all "before flipping to public" items. 👍

- CODE_OF_CONDUCT.md (Contributor Covenant v2.1) - SECURITY.md (responsible disclosure policy) - pnpm-workspace.yaml stub for monorepo - .gitignore: add .debug/ and *.tgz - CONTRIBUTING.md: link to Code of Conduct Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

bugfixes for hyperframes producer

Initial repo setup

- Eliminate redundant extractGsapWindows() call (was parsing each script twice, now once) - Fix window shadowing global — renamed to win, consistent with line 655 - Split classAttr once instead of twice - Named ClipInfo type for the selector map - Moved clip map construction before the script loop (computed once) - Removed orphan block scope and #1.5 numbering Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

- Eliminate redundant extractGsapWindows() call (was parsing each script twice, now once) - Fix window shadowing global — renamed to win, consistent with line 655 - Split classAttr once instead of twice - Named ClipInfo type for the selector map - Moved clip map construction before the script loop (computed once) - Removed orphan block scope and #1.5 numbering

…eadless-shell The engine assumed any binary passed via PRODUCER_HEADLESS_SHELL_PATH supported the HeadlessExperimental.beginFrame CDP command. When the CLI resolved system Chrome (e.g. /usr/bin/google-chrome) instead of chrome-headless-shell, the render would silently hang for 120s then timeout — the #1 new-user friction point. Now checks the binary path for "chrome-headless-shell" before selecting beginframe capture mode. System Chrome falls back to screenshot mode which works universally. Reproducer: # On a machine with system Chrome but no chrome-headless-shell cached npx hyperframes init test --template blank --non-interactive cd test && npx hyperframes render --output out.mp4 # Was: 120s hang, then "Timed out after waiting 120000ms" # Now: renders successfully via screenshot mode

Only one cursor may be visible at a time. Multiple cursors on screen looks broken. Every other cursor must be cursor-hide. Promoted to rule #1 in the cursor section. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat(skills): add gsap-effects skill with typewriter pattern Distills typewriter text animation into a reusable reference: basic typewriter, blinking cursor, word rotation, appending words, and a characters-per-second timing guide. Uses GSAP TextPlugin. Also references the new skill from compose-video. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(skills): emphasize cursor must always blink when idle and sit flush Two key rules added to the typewriter skill: 1. Cursor must blink in every idle state (after typing, after clearing, during hold pauses) — a solid idle cursor looks broken. 2. No whitespace between text and cursor elements in HTML — any gap between the last character and the caret looks wrong. Also adds cursor-hide state for multi-line handoffs and updates word rotation example to include cursor state management. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(skills): backspace must delete from end, not front TextPlugin's text:{value:""} removes characters from the front, which looks wrong. Added a backspace helper that steps through substrings from right to left using tl.call(). Updated word rotation example to use it. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(skills): handoffs must blink before typing, use margin for spacing Two lessons from testing: 1. Cursor handoffs need a blink pause — going hide→solid directly skips the idle state. Pattern: hide→blink→pause→solid→type→blink. 2. Use margin-left on a wrapper span for spacing between static and dynamic text. Flex gap spaces the cursor away, trailing spaces collapse. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(skills): enforce single visible cursor as a hard rule Only one cursor may be visible at a time. Multiple cursors on screen looks broken. Every other cursor must be cursor-hide. Promoted to rule #1 in the cursor section. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

…209) ## Summary Two independent initiatives that improve agent DX and expand HyperFrames' reach. ### Initiative 1: Fix the Clip Animation Footgun - `gsap_animates_clip_element` lint rule now uses smart detection — only errors when GSAP animates `visibility` or `display` on a clip element - All other properties (opacity, transform, x, y, scale, etc.) are allowed silently - This was the #1 agent failure in QA (10/10 agents hit it on v0.2.1) ### Initiative 2: `<hyperframes-player>` Web Component - New `@hyperframes/player` package — zero dependencies, 3.3KB gzipped - Iframe-based web component with Shadow DOM for perfect isolation - Video-like API: `play()`, `pause()`, `seek()`, `currentTime`, `duration`, events - Controls overlay with play/pause, scrubber (mouse + touch), time display, auto-hide - Full docs page at `docs/packages/player.mdx` ## Before / After ### Clip animation lint **Before (10/10 agents hit this):** ``` ✗ gsap_animates_clip_element: GSAP animation targets a clip element. Selector "#title" resolves to element <div id="title" class="clip">. The framework manages clip visibility — animate an inner wrapper instead. Fix: Wrap content in a child <div> and target that with GSAP. ``` **After (only errors on actual conflicts):** ``` # This passes lint — no error: tl.from("#title", { opacity: 0, y: -50, scale: 0.8 }, 0); # This still errors — actual conflict with runtime: tl.to("#title", { visibility: "hidden" }, 3); ✗ gsap_animates_clip_element: GSAP animation sets visibility on a clip element. Fix: Remove the visibility/display tween. Use opacity for fade effects. ``` ### Embeddable player **Before:** No way to embed a composition in a web page. **After:** ```html <script src="https://cdn.jsdelivr.net/npm/@hyperframes/player"></script> <hyperframes-player src="./composition/index.html" controls></hyperframes-player> ``` ```js const player = document.querySelector('hyperframes-player'); player.play(); player.pause(); player.seek(2.5); player.addEventListener('ready', (e) => console.log('Duration:', e.detail.duration)); ``` ## Test plan - [x] 427 core tests pass (20 GSAP lint tests with smart detection) - [x] 7 player tests pass (formatTime + element registration) - [x] TypeScript compiles cleanly (core + player) - [x] Lint: GSAP animating clip with safe props → 0 errors - [x] Lint: GSAP animating clip with `visibility` → 1 error (correct) - [x] Player builds to 3.3KB gzipped ESM - [x] Lockfile updated for CI - [x] Docs page added at `docs/packages/player.mdx`

Add --no-open boolean flag to both commands via citty's built-in boolean negation (--no-open sets args.open to false). - preview.ts: guard all 4 open() calls with args.open check - play.ts: guard the open() call with args.open check - Default is true (open browser), preserving existing behavior Closes #1 Co-authored-by: AnoKno <122017492+AnoKno@users.noreply.github.com>

PR 8.4 of the WebM distributed-rendering plan (v1.5 backlog #1; see DISTRIBUTED-RENDERING-PLAN.md §7.2). User-facing docs catch up with the shipped capability. Updates docs/deploy/migrating-to-hyperframes-lambda.mdx: - "Output format" row in the migration table now lists `webm` alongside mp4 / mov / png-sequence with a note that webm uses libvpx-vp9 + closed-GOP concat-copy. HDR mp4 remains the only refused format. - "No webm distributed" caveat replaced with "webm uses closed-GOP VP9" explainer covering the encoder args (`-g <chunkSize>`, `-keyint_min <chunkSize>`, `-auto-alt-ref 0`, `-cpu-used 2`), why alt-ref disable is load-bearing, and that the output preserves alpha via yuva420p with Opus audio. - Migration checklist no longer asks adopters to filter out webm compositions; only HDR-dependent renders need to stay on the previous framework. aws-lambda.mdx doesn't currently call out webm as unsupported (only HDR in the v1 surface list), so it gets no copy edits beyond the migration guide. The internal planning doc (DISTRIBUTED-RENDERING-PLAN.md §7.2, §8, §12 — kept outside the repo) gets matching updates: format support matrix flipped ✓, v1.5 backlog #1 marked shipped, HDR promoted to the new top item, and the rev-12 → rev-13 status line. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

PR 8.2 of the WebM distributed-rendering plan (v1.5 backlog #1; see DISTRIBUTED-RENDERING-PLAN.md §7.2). Wires libvpx-vp9 webm through the distributed pipeline now that PR 8.1 proved concat-copy works. Architectural decision: Path A (concat-copy) — based on PR 8.1's smoke test result (9/9 tests pass for both yuv420p and yuva420p VP9 streams). The simpler architecture wins; no re-encode in assemble, no encode- parallelism loss. Changes: - plan.ts: - DistributedRenderConfig.format and PlanResult.format now include "webm" — type-level acceptance matches the runtime gate. - rejectUnsupportedDistributedFormat() no longer trips on webm. HDR mp4 remains the only refused configuration. - resolveEncoderTriple() returns libvpx-vp9-software + yuva420p + preset="good" for format="webm". yuva420p preserves alpha — the format's main reason for existing for web delivery. - codec= remains rejected for non-mp4 formats (mov is always ProRes 4444; webm is always libvpx-vp9). The error message lists all four distributed-supported formats. - FormatNotSupportedInDistributedError docstring updated to reflect the new reality (only HDR is unsupported). - freezePlan.ts: LockedRenderConfig.encoder gains "libvpx-vp9-software". Mirrors libx265-software / prores-software / png-sequence in shape; the chunk worker reads this discriminant to decide encode args. - renderChunk.ts: drops the now-incorrect cast that excluded webm from buildSyntheticRenderJob's format input; tightens the preset-format cast to include webm. - assemble.ts: docstring + comment updates. The mp4/mov concat-copy path is format-agnostic — webm uses the exact same code (applyFaststart is a no-op for webm via the existing chunkEncoder.ts gate; muxVideoWithAudio already routes webm to libopus audio). - planFormatBanlist.test.ts: webm-rejection tests removed; replaced with "accepts webm" tests + a HDR+webm combo test that verifies HDR is the trip regardless of format. - plan.test.ts: new describe block pins the webm wiring contract: format="webm" produces an encoder=libvpx-vp9-software / pixelFormat=yuva420p planDir with closedGop=true and gopSize=chunkSize. - webm-concat-copy.test.ts (smoke): extended with a yuva420p variant that proves the alpha pixel format the distributed pipeline actually emits also round-trips through concat-copy. 9/9 tests pass locally. §8 format support matrix in DISTRIBUTED-RENDERING-PLAN.md is intentionally left unchanged at this PR — it flips to ✓ in PR 8.4 once the end-to-end fixture (PR 8.3) is green. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

PR 8.3 of the WebM distributed-rendering plan (v1.5 backlog #1; see DISTRIBUTED-RENDERING-PLAN.md §7.2). End-to-end regression coverage for the webm distributed path PRs 8.1 and 8.2 wired up. Adds packages/producer/tests/distributed/webm-vp9/ matching the mp4-h264-sdr fixture pattern: a 2-second composition (60 frames @ 30fps) with text, a crossfade across the frame-30 chunk seam, and a continuous icon rotation — exercises chunk-boundary continuity for both display contents and VP9 closed-GOP alpha encoding. `chunkSize: 15` produces 4 chunks so 3 seams are tested, and the crossfade straddles the middle seam to surface alpha-plane discontinuities introduced by alt-ref drift. Baseline regenerated inside Dockerfile.test via `bun run --cwd packages/producer docker:test:update webm-vp9`. Runs in: - in-process mode: byte-identical match against baseline ✓ - distributed-simulated mode: PSNR 56.88-63.49 dB across 100 checkpoints, well above the 30 dB threshold ✓ Wiring updates required to let webm flow through the harness: - regression-harness-distributed.ts: - checkDistributedSupport() no longer rejects webm. HDR mp4 + NTSC fps + non-{24,30,60} fps remain rejected. - RunDistributedSimulatedInput.format widened to include webm. - Docstring + comments updated. - regression-harness-distributed.test.ts: webm-rejection test replaced with "accepts format=webm" test. - regression-harness.ts: the now-incorrect format cast at the distributed-input call site is dropped; comment about why webm was excluded is replaced with "webm is now distributed-supported". - regression-harness-lambda-local-types.ts: RunLambdaLocalInput.format widened to include webm so lambda-local mode can also exercise webm fixtures end-to-end. - aws-lambda webm support (Path A through the Lambda handler): - formatExtension.ts: DistributedFormat gains "webm" → ".webm" case. - events.ts: RenderChunkEvent / AssembleEvent / PlanLambdaResult Format widened to include webm. - sdk/validateConfig.ts: ALLOWED_FORMATS gains "webm". - handler.ts: downloadChunkObjects format param widened. The Lambda handler delegates to the producer's assemble() primitive which PR 8.2 already taught to handle webm (concat-copy + applyFaststart no-op + muxVideoWithAudio with libopus); no Lambda-side rendering changes are needed beyond the type/validation surfaces above. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

PR 8.4 of the WebM distributed-rendering plan (v1.5 backlog #1; see DISTRIBUTED-RENDERING-PLAN.md §7.2). User-facing docs catch up with the shipped capability. Updates docs/deploy/migrating-to-hyperframes-lambda.mdx: - "Output format" row in the migration table now lists `webm` alongside mp4 / mov / png-sequence with a note that webm uses libvpx-vp9 + closed-GOP concat-copy. HDR mp4 remains the only refused format. - "No webm distributed" caveat replaced with "webm uses closed-GOP VP9" explainer covering the encoder args (`-g <chunkSize>`, `-keyint_min <chunkSize>`, `-auto-alt-ref 0`, `-cpu-used 2`), why alt-ref disable is load-bearing, and that the output preserves alpha via yuva420p with Opus audio. - Migration checklist no longer asks adopters to filter out webm compositions; only HDR-dependent renders need to stay on the previous framework. aws-lambda.mdx doesn't currently call out webm as unsupported (only HDR in the v1 surface list), so it gets no copy edits beyond the migration guide. The internal planning doc (DISTRIBUTED-RENDERING-PLAN.md §7.2, §8, §12 — kept outside the repo) gets matching updates: format support matrix flipped ✓, v1.5 backlog #1 marked shipped, HDR promoted to the new top item, and the rev-12 → rev-13 status line. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* feat(producer): enable webm in distributed mode via concat-copy PR 8.2 of the WebM distributed-rendering plan (v1.5 backlog #1; see DISTRIBUTED-RENDERING-PLAN.md §7.2). Wires libvpx-vp9 webm through the distributed pipeline now that PR 8.1 proved concat-copy works. Architectural decision: Path A (concat-copy) — based on PR 8.1's smoke test result (9/9 tests pass for both yuv420p and yuva420p VP9 streams). The simpler architecture wins; no re-encode in assemble, no encode- parallelism loss. Changes: - plan.ts: - DistributedRenderConfig.format and PlanResult.format now include "webm" — type-level acceptance matches the runtime gate. - rejectUnsupportedDistributedFormat() no longer trips on webm. HDR mp4 remains the only refused configuration. - resolveEncoderTriple() returns libvpx-vp9-software + yuva420p + preset="good" for format="webm". yuva420p preserves alpha — the format's main reason for existing for web delivery. - codec= remains rejected for non-mp4 formats (mov is always ProRes 4444; webm is always libvpx-vp9). The error message lists all four distributed-supported formats. - FormatNotSupportedInDistributedError docstring updated to reflect the new reality (only HDR is unsupported). - freezePlan.ts: LockedRenderConfig.encoder gains "libvpx-vp9-software". Mirrors libx265-software / prores-software / png-sequence in shape; the chunk worker reads this discriminant to decide encode args. - renderChunk.ts: drops the now-incorrect cast that excluded webm from buildSyntheticRenderJob's format input; tightens the preset-format cast to include webm. - assemble.ts: docstring + comment updates. The mp4/mov concat-copy path is format-agnostic — webm uses the exact same code (applyFaststart is a no-op for webm via the existing chunkEncoder.ts gate; muxVideoWithAudio already routes webm to libopus audio). - planFormatBanlist.test.ts: webm-rejection tests removed; replaced with "accepts webm" tests + a HDR+webm combo test that verifies HDR is the trip regardless of format. - plan.test.ts: new describe block pins the webm wiring contract: format="webm" produces an encoder=libvpx-vp9-software / pixelFormat=yuva420p planDir with closedGop=true and gopSize=chunkSize. - webm-concat-copy.test.ts (smoke): extended with a yuva420p variant that proves the alpha pixel format the distributed pipeline actually emits also round-trips through concat-copy. 9/9 tests pass locally. §8 format support matrix in DISTRIBUTED-RENDERING-PLAN.md is intentionally left unchanged at this PR — it flips to ✓ in PR 8.4 once the end-to-end fixture (PR 8.3) is green. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(producer): include webm in plan-time needsAlpha + strengthen alpha smoke PR review feedback from Miguel and Vai on #951 caught a real bug: `plan.ts`'s `needsAlpha` disjunction excluded `"webm"`, so the plan stage froze `forceScreenshot: false` into the `LockedRenderConfig` even though distributed webm uses `yuva420p`. Every chunk worker captured opaque RGB via BeginFrame (which doesn't preserve alpha on Linux headless-shell), and libvpx-vp9 encoded uniformly-opaque alpha that the encoder then dropped — producing un-keyable webm. Two changes: 1. **plan.ts**: include `"webm"` in `needsAlpha`. Matches the in-process renderer's logic at `renderOrchestrator.ts:1469` (`const needsAlpha = isWebm || isMov || isPngSequence`); the two sites must stay in sync since the distributed pipeline's PSNR regression compares against the in-process baseline. 2. **Smoke test (yuva420p describe)**: source frames now use a real alpha gradient (`geq=a='X*255/W'` on top of `testsrc2`) instead of `testsrc2 + format=rgba` which was uniformly opaque. The decode- pix_fmt assertion is dropped (ffprobe reports `yuv420p` for VP9-with-alpha because the alpha lives in a Matroska `BlockAdditional` sidecar) and replaced with two stronger checks: - `TAG:ALPHA_MODE=1` is present on the stream — proves the encoder was actually configured for alpha - alpha plane variance after `-c:v libvpx-vp9 -i ... -pix_fmt rgba -vf extractplanes=a,signalstats` — proves the alpha sub-stream round-trips through concat-copy with spatially-varying content, not uniform/dropped alpha - decode-test gate is now exit-code-only (was `exitCode || stderr` which would flake on chatty ffmpeg `-v error` builds emitting non-fatal DTS/container notes) These checks would have caught the `needsAlpha` bug before review. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(aws-lambda): widen narrow format types to include webm CI on PR #951 was failing at typecheck/build because the producer's `DistributedRenderConfig.format` widened to include webm in this PR but the aws-lambda package's narrow `"mp4" | "mov" | "png-sequence"` type literals in `events.ts`, `handler.ts`, and `validateConfig.ts` hadn't kept up. `renderToLambda.ts:87` passed `config.format` (now including webm) into a parameter typed against the narrow union, producing TS2345. This widening originally landed in PR #952 (test fixture PR) but needs to be atomic with the producer's widening here to keep each PR independently typecheck-clean. Also refactor `formatExtension` from a switch dispatch to a `Record<DistributedFormat, string>` lookup. Adding the webm case tipped the switch's CRAP to the 30.0 fallow threshold; the lookup table drops cyclomatic from 5 to 1 with the same compile-time exhaustiveness guarantee (TS errors on missing entries when `DistributedFormat` adds a new format). The runtime `_exhaustive: never` throw was only protecting against a string slipping past TS; `validateConfig.ts`'s `ALLOWED_FORMATS` already gates untrusted input at the SDK boundary. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* feat(producer): enable webm in distributed mode via concat-copy PR 8.2 of the WebM distributed-rendering plan (v1.5 backlog #1; see DISTRIBUTED-RENDERING-PLAN.md §7.2). Wires libvpx-vp9 webm through the distributed pipeline now that PR 8.1 proved concat-copy works. Architectural decision: Path A (concat-copy) — based on PR 8.1's smoke test result (9/9 tests pass for both yuv420p and yuva420p VP9 streams). The simpler architecture wins; no re-encode in assemble, no encode- parallelism loss. Changes: - plan.ts: - DistributedRenderConfig.format and PlanResult.format now include "webm" — type-level acceptance matches the runtime gate. - rejectUnsupportedDistributedFormat() no longer trips on webm. HDR mp4 remains the only refused configuration. - resolveEncoderTriple() returns libvpx-vp9-software + yuva420p + preset="good" for format="webm". yuva420p preserves alpha — the format's main reason for existing for web delivery. - codec= remains rejected for non-mp4 formats (mov is always ProRes 4444; webm is always libvpx-vp9). The error message lists all four distributed-supported formats. - FormatNotSupportedInDistributedError docstring updated to reflect the new reality (only HDR is unsupported). - freezePlan.ts: LockedRenderConfig.encoder gains "libvpx-vp9-software". Mirrors libx265-software / prores-software / png-sequence in shape; the chunk worker reads this discriminant to decide encode args. - renderChunk.ts: drops the now-incorrect cast that excluded webm from buildSyntheticRenderJob's format input; tightens the preset-format cast to include webm. - assemble.ts: docstring + comment updates. The mp4/mov concat-copy path is format-agnostic — webm uses the exact same code (applyFaststart is a no-op for webm via the existing chunkEncoder.ts gate; muxVideoWithAudio already routes webm to libopus audio). - planFormatBanlist.test.ts: webm-rejection tests removed; replaced with "accepts webm" tests + a HDR+webm combo test that verifies HDR is the trip regardless of format. - plan.test.ts: new describe block pins the webm wiring contract: format="webm" produces an encoder=libvpx-vp9-software / pixelFormat=yuva420p planDir with closedGop=true and gopSize=chunkSize. - webm-concat-copy.test.ts (smoke): extended with a yuva420p variant that proves the alpha pixel format the distributed pipeline actually emits also round-trips through concat-copy. 9/9 tests pass locally. §8 format support matrix in DISTRIBUTED-RENDERING-PLAN.md is intentionally left unchanged at this PR — it flips to ✓ in PR 8.4 once the end-to-end fixture (PR 8.3) is green. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(producer): include webm in plan-time needsAlpha + strengthen alpha smoke PR review feedback from Miguel and Vai on #951 caught a real bug: `plan.ts`'s `needsAlpha` disjunction excluded `"webm"`, so the plan stage froze `forceScreenshot: false` into the `LockedRenderConfig` even though distributed webm uses `yuva420p`. Every chunk worker captured opaque RGB via BeginFrame (which doesn't preserve alpha on Linux headless-shell), and libvpx-vp9 encoded uniformly-opaque alpha that the encoder then dropped — producing un-keyable webm. Two changes: 1. **plan.ts**: include `"webm"` in `needsAlpha`. Matches the in-process renderer's logic at `renderOrchestrator.ts:1469` (`const needsAlpha = isWebm || isMov || isPngSequence`); the two sites must stay in sync since the distributed pipeline's PSNR regression compares against the in-process baseline. 2. **Smoke test (yuva420p describe)**: source frames now use a real alpha gradient (`geq=a='X*255/W'` on top of `testsrc2`) instead of `testsrc2 + format=rgba` which was uniformly opaque. The decode- pix_fmt assertion is dropped (ffprobe reports `yuv420p` for VP9-with-alpha because the alpha lives in a Matroska `BlockAdditional` sidecar) and replaced with two stronger checks: - `TAG:ALPHA_MODE=1` is present on the stream — proves the encoder was actually configured for alpha - alpha plane variance after `-c:v libvpx-vp9 -i ... -pix_fmt rgba -vf extractplanes=a,signalstats` — proves the alpha sub-stream round-trips through concat-copy with spatially-varying content, not uniform/dropped alpha - decode-test gate is now exit-code-only (was `exitCode || stderr` which would flake on chatty ffmpeg `-v error` builds emitting non-fatal DTS/container notes) These checks would have caught the `needsAlpha` bug before review. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(aws-lambda): widen narrow format types to include webm CI on PR #951 was failing at typecheck/build because the producer's `DistributedRenderConfig.format` widened to include webm in this PR but the aws-lambda package's narrow `"mp4" | "mov" | "png-sequence"` type literals in `events.ts`, `handler.ts`, and `validateConfig.ts` hadn't kept up. `renderToLambda.ts:87` passed `config.format` (now including webm) into a parameter typed against the narrow union, producing TS2345. This widening originally landed in PR #952 (test fixture PR) but needs to be atomic with the producer's widening here to keep each PR independently typecheck-clean. Also refactor `formatExtension` from a switch dispatch to a `Record<DistributedFormat, string>` lookup. Adding the webm case tipped the switch's CRAP to the 30.0 fallow threshold; the lookup table drops cyclomatic from 5 to 1 with the same compile-time exhaustiveness guarantee (TS errors on missing entries when `DistributedFormat` adds a new format). The runtime `_exhaustive: never` throw was only protecting against a string slipping past TS; `validateConfig.ts`'s `ALLOWED_FORMATS` already gates untrusted input at the SDK boundary. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * test(producer): add webm-vp9 distributed regression fixture PR 8.3 of the WebM distributed-rendering plan (v1.5 backlog #1; see DISTRIBUTED-RENDERING-PLAN.md §7.2). End-to-end regression coverage for the webm distributed path PRs 8.1 and 8.2 wired up. Adds packages/producer/tests/distributed/webm-vp9/ matching the mp4-h264-sdr fixture pattern: a 2-second composition (60 frames @ 30fps) with text, a crossfade across the frame-30 chunk seam, and a continuous icon rotation — exercises chunk-boundary continuity for both display contents and VP9 closed-GOP alpha encoding. `chunkSize: 15` produces 4 chunks so 3 seams are tested, and the crossfade straddles the middle seam to surface alpha-plane discontinuities introduced by alt-ref drift. Baseline regenerated inside Dockerfile.test via `bun run --cwd packages/producer docker:test:update webm-vp9`. Runs in: - in-process mode: byte-identical match against baseline ✓ - distributed-simulated mode: PSNR 56.88-63.49 dB across 100 checkpoints, well above the 30 dB threshold ✓ Wiring updates required to let webm flow through the harness: - regression-harness-distributed.ts: - checkDistributedSupport() no longer rejects webm. HDR mp4 + NTSC fps + non-{24,30,60} fps remain rejected. - RunDistributedSimulatedInput.format widened to include webm. - Docstring + comments updated. - regression-harness-distributed.test.ts: webm-rejection test replaced with "accepts format=webm" test. - regression-harness.ts: the now-incorrect format cast at the distributed-input call site is dropped; comment about why webm was excluded is replaced with "webm is now distributed-supported". - regression-harness-lambda-local-types.ts: RunLambdaLocalInput.format widened to include webm so lambda-local mode can also exercise webm fixtures end-to-end. - aws-lambda webm support (Path A through the Lambda handler): - formatExtension.ts: DistributedFormat gains "webm" → ".webm" case. - events.ts: RenderChunkEvent / AssembleEvent / PlanLambdaResult Format widened to include webm. - sdk/validateConfig.ts: ALLOWED_FORMATS gains "webm". - handler.ts: downloadChunkObjects format param widened. The Lambda handler delegates to the producer's assemble() primitive which PR 8.2 already taught to handle webm (concat-copy + applyFaststart no-op + muxVideoWithAudio with libopus); no Lambda-side rendering changes are needed beyond the type/validation surfaces above. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * docs(aws-lambda): drop stale webm rejection from validateConfig docblock PR #952 review nit (Miguel): the validateConfig.ts file-header comment still claimed the SDK rejects webm, but the runtime check no longer does (ALLOWED_FORMATS now includes 'webm'). Update the docblock to reflect that only force-hdr remains an SDK-side rejection. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * ci(regression): add webm-vp9 to shard-3 + refactor formatExtension Three follow-ups bundled together (Vai's review feedback on PR #952 plus the fallow audit finding that surfaced when the webm case was added): 1. **Wire webm-vp9 into CI regression.** The fixture was added in this PR but never appeared in any `.github/workflows/regression.yml` shard's args allowlist, so the regression harness's positional-args gate skipped it in CI. Append `webm-vp9` to shard-3 (which already carries `mp4-h264-sdr` + `webm-transparency`) so the fixture runs. 2. **Fix stale "four hard gates" prose in checkDistributedSupport docstring.** Earlier in the stack I removed the webm bullet but didn't update the count. Two gates remain (fps + hdr). 3. **Refactor `formatExtension` from switch to lookup table.** Adding the webm case made the switch dispatch's CRAP score hit 30.0 (cyclomatic = 5, plus the function's small body). Replaced with a `Record<DistributedFormat, string>` lookup, which: - drops cyclomatic from 5 → 1, - keeps exhaustiveness enforcement at compile time (TS errors if a new format gets added to `DistributedFormat` without a matching key in the Record literal), - drops the runtime `_exhaustive: never` throw, which was only guarding against an arbitrary string slipping past TS — a caller-side concern, not this function's job. The function now reads as a table lookup, which matches what it actually does, and the fallow audit now reports zero new complexity findings (down from 1). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

PR 8.4 of the WebM distributed-rendering plan (v1.5 backlog #1; see DISTRIBUTED-RENDERING-PLAN.md §7.2). User-facing docs catch up with the shipped capability. Updates docs/deploy/migrating-to-hyperframes-lambda.mdx: - "Output format" row in the migration table now lists `webm` alongside mp4 / mov / png-sequence with a note that webm uses libvpx-vp9 + closed-GOP concat-copy. HDR mp4 remains the only refused format. - "No webm distributed" caveat replaced with "webm uses closed-GOP VP9" explainer covering the encoder args (`-g <chunkSize>`, `-keyint_min <chunkSize>`, `-auto-alt-ref 0`, `-cpu-used 2`), why alt-ref disable is load-bearing, and that the output preserves alpha via yuva420p with Opus audio. - Migration checklist no longer asks adopters to filter out webm compositions; only HDR-dependent renders need to stay on the previous framework. aws-lambda.mdx doesn't currently call out webm as unsupported (only HDR in the v1 surface list), so it gets no copy edits beyond the migration guide. The internal planning doc (DISTRIBUTED-RENDERING-PLAN.md §7.2, §8, §12 — kept outside the repo) gets matching updates: format support matrix flipped ✓, v1.5 backlog #1 marked shipped, HDR promoted to the new top item, and the rev-12 → rev-13 status line. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* docs(lambda): document webm support in distributed mode PR 8.4 of the WebM distributed-rendering plan (v1.5 backlog #1; see DISTRIBUTED-RENDERING-PLAN.md §7.2). User-facing docs catch up with the shipped capability. Updates docs/deploy/migrating-to-hyperframes-lambda.mdx: - "Output format" row in the migration table now lists `webm` alongside mp4 / mov / png-sequence with a note that webm uses libvpx-vp9 + closed-GOP concat-copy. HDR mp4 remains the only refused format. - "No webm distributed" caveat replaced with "webm uses closed-GOP VP9" explainer covering the encoder args (`-g <chunkSize>`, `-keyint_min <chunkSize>`, `-auto-alt-ref 0`, `-cpu-used 2`), why alt-ref disable is load-bearing, and that the output preserves alpha via yuva420p with Opus audio. - Migration checklist no longer asks adopters to filter out webm compositions; only HDR-dependent renders need to stay on the previous framework. aws-lambda.mdx doesn't currently call out webm as unsupported (only HDR in the v1 surface list), so it gets no copy edits beyond the migration guide. The internal planning doc (DISTRIBUTED-RENDERING-PLAN.md §7.2, §8, §12 — kept outside the repo) gets matching updates: format support matrix flipped ✓, v1.5 backlog #1 marked shipped, HDR promoted to the new top item, and the rev-12 → rev-13 status line. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * refactor: address simplify-review findings on webm stack Folds in cleanups identified by a multi-agent code-review pass over the 4-PR webm-distributed stack: - plan.ts: `resolveEncoderTriple()` webm case now calls `getEncoderPreset(quality, "webm")` for its preset string instead of hardcoding "good". The hardcode was wrong for `quality: "draft"` (`getEncoderPreset` returns "realtime" for that tier) — would have silently overridden the draft → realtime mapping for distributed webm renders. - chunkEncoder.ts: trim the new VP9 closed-GOP comment block from ~18 lines of WHY narration down to the 6 lines that actually explain why (alt-ref + cpu-used drift). Match the alpha branch's idempotent-push comment to the same standard. - chunkEncoder.test.ts: drop the duplicate WHY comment that restated the implementation comment in plain words. - webm-concat-copy.test.ts: rewrite the file-header docstring to describe the contract being tested instead of the PR-8.1-gating history; strip "PR 8.2 / Path A / Path B" references from error messages (they belong in PR bodies, not in test output). Consolidate the yuva420p alpha smoke into a single `it()` block (was a full 4-test describe with duplicated setup) — the yuv420p block already covers the probe/decode/frame-count contract; the alpha smoke only needs to prove the alpha args don't break concat-copy. - plan.test.ts: drop the "PR 8.1 proved the contract" comment. - webm-vp9 fixture: drop the aspirational "Other webm-with-audio fixtures cover the mux path separately when added" sentence (no other fixtures exist). Regenerated the baseline via `docker:test:update webm-vp9` to reflect the updated comment. - migrating-to-hyperframes-lambda.mdx: add a paragraph about distributed webm's perf cost — ~10-25% larger files at constant CRF due to forced keyframes, and slower per-chunk encode due to `-cpu-used 2` being more conservative than the libvpx default. All unit tests + the webm-vp9 distributed-simulated regression still pass after these changes. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(cli): accept --format=webm in `hyperframes lambda render` The CLI's `lambda render` subcommand's FORMATS allowlist and the `RenderArgs.format` type still narrowed to `mp4 | mov | png-sequence`, so even though the producer + aws-lambda packages now support webm end-to-end, the CLI surface rejected it with `--format must be mp4|mov| png-sequence`. Add webm to both spots and update the --help description. Surfaced during real-AWS deploy prep — the local lambda-local / distributed-simulated tests didn't go through the CLI so the gap went unnoticed. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(producer): font cache writes to /tmp on Lambda (read-only \$HOME) The deterministic Google Fonts cache was rooted at `\$HOME/.cache/hyperframes/fonts`, which fails on AWS Lambda — the runtime's `\$HOME` resolves to a `/home/sbx_*` directory tree that's read-only. `mkdirSync(..., { recursive: true })` can't create that path and the plan stage trips with `ENOENT: no such file or directory, mkdir '/home/sbx_user1051/.cache/hyperframes/fonts/space-mono'` on every Lambda render that pulls a Google Font (i.e. every distributed fixture using `@import url("https://fonts.googleapis.com/...")`). Detect Lambda via `\$AWS_LAMBDA_FUNCTION_NAME` and route the cache to `tmpdir()/hyperframes/fonts` in that case. Lambda's `/tmp` survives across invocations on a warm container, so cache hit rate is the same as non-Lambda runs. Also honor an explicit `\$HYPERFRAMES_FONT_CACHE_DIR` override for adopters who want a different location regardless of the runtime. Surfaced while verifying webm distributed end-to-end on real AWS — the same bug affects mp4 fixtures using Google Fonts; webm just happened to be the one I tried first. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * refactor: extract DistributedFormat type + trim font-cache resolver Second simplify-review pass on the webm stack flagged two cleanups: 1. **`DistributedFormat` type duplicated 10 times.** Every file in the distributed pipeline carried its own copy of `"mp4" | "mov" | "png-sequence" | "webm"` — adding a new format meant a 10-place edit with no compile-time guarantee they stayed in sync. Extract a single source of truth in `packages/producer/src/services/distributed/shared.ts`, re-export from `@hyperframes/producer/distributed` and `@hyperframes/aws-lambda/sdk`, and have all callers pull from there. The aws-lambda `ALLOWED_FORMATS` runtime tuple and the CLI's `FORMATS` tuple now both use `satisfies readonly DistributedFormat[]` so the compiler enforces the runtime allowlist stays in sync with the type. 2. **`deterministicFonts.ts` font-cache resolver was over-commented.** Trim the 7-line block to 4 lines (drop the aspirational "and other read-only-FS execution environments" — only Lambda is detected — and the warm-container `/tmp` persistence narration — anyone reading already knows Lambda /tmp semantics). Collapse the two-step `if (explicit && explicit.length > 0)` into a single nullish-coalesce expression now that the empty-string defensive check is gone (`process.env.X` is `string | undefined`, no third shape to guard against). Out-of-scope skips (called out by the agents, deferred): - In-process `RenderConfig.format` and the in-process CLI's `render.ts` format union still carry their own inline copies. The union happens to coincide today but they're separate concerns — leaving them alone limits this PR's blast radius. - `fontCacheDir(slug)` / `resolveFontCacheRoot()` naming asymmetry flagged as taste; skipping. - Pre-existing redundant `existsSync` before `mkdirSync({ recursive: true })` in `fontCacheDir` — out of scope. All tests + typecheck still pass. Lambda render still works end-to-end (no functional changes). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * docs(lambda): drop plan-doc reference from migration checklist PR review feedback: source/docs should not mention the distributed-rendering planning doc. Tighten the migration checklist sentence to describe the webm path directly rather than referencing the doc's version label. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * refactor(producer): split resolveEncoderTriple into mp4 + non-mp4 helpers CI Fallow audit on PR #953 flagged `resolveEncoderTriple` at CRAP 31.6 — the function interleaved (a) mp4 codec validation + dispatch, (b) the non-mp4 codec-rejection throw, and (c) per-format dispatch. Splitting into `resolveMp4EncoderTriple` + `resolveNonMp4EncoderTriple` drops the top-level function's cyclomatic complexity below the threshold while preserving every error message and code path. Behavior unchanged. Also extracts an `EncoderTriple` type alias so the three functions share the return shape declaratively rather than repeating it. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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jrusso1020 merged commit f606dc2 into main Mar 10, 2026
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Merge pull request #1 from heygen-com/hyperframe-producer-bugfixes

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bugfixes for hyperframes producer

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refactor(core): extract shared studio API module #113

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fix(engine,cli): download headless-shell instead of using system Chrome for local renders #131

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fix: address QA report P0-P2 issues for 10/10 agent experience #208

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fix(studio): auto-enable loop when work-area markers are set #859

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fix(studio): enable timeline resize for all elements, improve perf and UX #978

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		## Documentation

		Visit [hyperframes.dev](https://hyperframes.dev) for full documentation, guides, and API reference.

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