Adds a `--timeout <ms>` CLI flag (and `HYPERFRAMES_TRANSCRIBE_TIMEOUT_MS`
env var) plus a model-slowdown factor in the auto-scaled default so
`hyperframes transcribe` doesn't hard-fail with `spawnSync ETIMEDOUT`
on slow CPUs running heavier whisper models.
Field-signal ts=1784165471 (win32/arm64 emulating x64 on Snapdragon,
CLI 0.7.59) reported the failure on a 63s wav with `-m medium` at ~13x
realtime — the historical 10x-realtime scale (PR #2463) gave 10.5 min
while the machine needed ~13.7 min. Splitting audio and merging offsets
was the manual workaround.
- Add `--timeout <ms>` and `HYPERFRAMES_TRANSCRIBE_TIMEOUT_MS` (min 5000).
Explicit override bypasses auto-scaling; still capped at 12h.
- Add per-model slowdown factor (tiny 0.5, base 0.7, small 1, medium 2,
large 4, large-v3-turbo 2). Multiplied into the 10s/audio-second
baseline so medium/large get proportional headroom while `small.en`
(the default) preserves the historical safety window.
- Wrap whisper's spawn error with a discoverability hint naming
`--timeout`, the env var, and the effective timeout when the child
was killed by SIGTERM/ETIMEDOUT (mirrors PR #2504 protocol-timeout).
- Docs: new `--timeout` row in `docs/packages/cli.mdx` Flags table.
Regression coverage in `packages/cli/src/whisper/transcribe.test.ts`
(56 tests) and `packages/cli/src/commands/transcribe.test.ts` (5 tests):
- Model factor per known name + case-insensitive + safe unknown fallback.
- 63s field-signal case on medium.en → 1_260_000ms (was 630_000ms).
- Explicit override honored below the auto floor + capped at 12h.
- Model factor ignored when overrideMs is set.
- SIGTERM/ETIMEDOUT detection + augmented message contract.
- CLI rejects below-minimum `--timeout` with error naming both the flag
and the 5000ms floor.
— Via
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Add formatSrt/formatVtt/wordsToCues to normalize.ts (the inverse of the
existing parseSrt/parseVtt) and a 'hyperframes transcribe <transcript> --to
srt|vtt' export mode. Word-level whisper transcripts group into cues on
sentence boundaries with maxChars/maxGap guards; imported phrase-level cues
pass through unchanged. Default transcribe behavior is unchanged and no new
dependencies are added.
Co-authored-by: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>
transcribe hard-failed with cli_error whenever whisper-cpp was absent. On
Linux/Docker/CI (no Homebrew, no compiler toolchain) that is unavoidable, so it
drove ~30k cli_error/day that are really "install the prerequisite" rather than
bugs — and buried genuine transcription failures in the command-error budget.
ensureWhisper now throws a typed WhisperUnavailableError when no binary exists
and none can be built. The transcribe command reports that on a dedicated
transcribe_unavailable metric instead of cli_error, and a new --optional flag
lets pipelines skip captions and exit 0. Real transcription crashes still fail
as cli_error. init and the skill pipelines already continue without captions.
Also removes a stale doc reference to a `transcribe --provider groq` flag that
does not exist.
Transcribe failures are recorded as `cli_command_result success=false` but
without a reason: the command catches its own error, prints it, and
`process.exit(1)` — the message never reaches telemetry. `cli_error` was only
emitted from the uncaughtException / unhandledRejection handlers, so
self-handled command failures were invisible. That makes a high failure rate
countable but not debuggable.
Add `trackCommandFailure(command, err)` — a thin wrapper over the existing
`trackCliError({ kind: "command_error" })` that normalizes an unknown reason to
name/message/stack. It enqueues synchronously, so the process `exit` handler's
flushSync ships it alongside `cli_command_result`. Respects the telemetry
opt-out (gated in trackEvent) and reuses the existing PII redaction.
Wire it into all three of transcribe's failure exits (file-not-found,
empty-transcript import, and the transcribe() catch — ffmpeg / whisper-binary /
model-download errors). Now each failure carries its reason, so we can see how
much of the failure rate is environment vs user input.
The helper is generic — the same one-liner can be dropped into other commands'
failure paths, or centralized at the runMain boundary, as a follow-up.
Capture pipeline work that came out of the 11-round website-to-video
eval branch. The wins that actually moved quality were the artifacts
agents read (contact sheets, design-styles) and the snapshot tool
visual-verification fixes; the rest are smaller follow-ons.
**Contact sheets (`contactSheet.ts`, new)**
- Replaces the embedded one-image-per-asset listing with paginated
labeled grids (3-col screenshots / 4-col raster / 5-col SVG). Each
page contains 9–15 cells with filename labels baked in via SVG
text overlay (`escapeXml` covers `&<>"'`).
- `fit: "contain"` keeps every asset visible at its real aspect
ratio; the old `fit: "cover"` cropped to the first image's box.
- Returns `string[]` (page paths) — single-page captures get one
file, multi-page produce `contact-sheet-1.jpg`, `contact-sheet-2.jpg`,
etc.
- `createSvgContactSheet` scans both `assets/svgs/` (inline-extracted
SVGs) and `assets/` root (external SVGs from `<img src="*.svg">`)
and de-dupes by filename. Sites with all-external SVGs (huly.io)
now get coverage they previously didn't.
**Design styles extractor (`designStyleExtractor.ts`, new)**
- Walks the live DOM and reads computed styles to produce
`extracted/design-styles.json`: typography hierarchy (every text
role with exact font-size / weight / line-height / letter-spacing),
button variants (background / padding / radius / shadow), card /
container / nav styles, spacing scale with base unit, border-radius
scale, box-shadow values with usage counts.
- Primary data source for DESIGN.md authoring at Step 1. Replaces
the prior "guess from screenshots" workflow.
**Snapshot tool (`snapshot.ts`)**
- HyperShader pre-rendering used to swallow the entire snapshot
capture window (every frame after the first showed the loading
overlay or final-opacity-zero exit fades). Wait signal is now
`window.__hf.shaderTransitions[].ready` (set after both warm and
cold cache paths complete); local-time seek for sub-comps means
exit fades read at their own t=0..duration, not global time.
- Gemini vision per-frame analysis runs by default (`descriptions.md`
next to the contact sheet). `--describe "custom Q"` overrides the
prompt; `--describe false` opts out.
- 3-column contact sheet generation for snapshot frames so reviewers
see all beats at a glance.
**Screenshot capture (`screenshotCapture.ts`)**
- Replaces `querySelectorAll('*') + getComputedStyle` overlay scan
with a TreeWalker that early-exits on cheap rect checks before
reaching the expensive style read. Caps at 5000 elements per page.
- Cookie/consent dismissal selectors are scoped under cookie /
consent / gdpr ancestors so we don't click "Accept invitation" or
similar unrelated buttons.
**Agent prompt (`agentPromptGenerator.ts`)**
- Auto-discovers contact-sheet page count (matches base name plus
paginated `-NNN` variants only, with regex escaping on the base
name and numeric sort for 10+ pages).
- `inferColorRole`: classifies extracted hex colors as bg-dark /
bg-light / accent / surface / neutral via luminance + saturation,
so the agent prompt shows `#533AFD (accent)` instead of bare hex.
- `design-styles.json` row is gated on `existsSync` — the upstream
write is wrapped in try/catch and may skip on failure, so the
prompt only points to files actually on disk.
**Other CLI ergonomics**
- `cli.ts`: auto-load `.env` from CWD on startup so subcommands like
`snapshot` don't need explicit `export GEMINI_API_KEY=…`. Handles
`export FOO=bar`, quoted values, inline `# comments`.
- `commands/transcribe.ts`: default output dir is the input file's
directory, not CWD. Stops the "wrote transcript.json somewhere
unexpected" footgun.
- `assetDownloader.ts`: improved asset naming uses catalog context;
de-duplicates inline SVG filenames.
- `contentExtractor.ts`: captions SVGs via Gemini (code-as-text) and
integrates them into asset descriptions.
- `tokenExtractor.ts` + `types.ts`: SVG bounding box dimensions and
new DesignStyles schema added.
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>
## Summary
**Whisper improvements:**
- Auto-detect language and switch from `.en` to multilingual model when needed
- Detect speech onset in WAV to strip hallucinated words before speech begins
- Merge whisper-cpp token fragments: contractions (`didn` + `'t` → `didn't`), split capitals (`C` + `aught` → `Caught`), dropped-g (`shin` + `in'` → `shinin'`)
- Interpolate zero-duration word clusters for reliable karaoke timing
**Captions skill updates (folded from #176):**
- Rewrite script-to-style mapping as an energy detection table (high → low) with mandatory animation requirements: karaoke baseline, 2+ highlight techniques, kinetic exits
- Replace `tl.call()` per-frame audio-reactive pattern with group-level GSAP tweens — read peak bass/treble for each group's time range and modulate entrance intensity at build time
- Add transcript quality check with automatic retry rules (>20% music tokens = retry with larger model)
- Add caption word structure lint rule (`.caption-group` + `<span>`) for studio editor compatibility
**Multilingual defaults (folded from #186):**
- Default whisper model changed from `small.en` to `small` to prevent silent translation of non-English audio
- Added non-negotiable language rule to captions skill
## Test plan
- [ ] `pnpm test` passes (contraction merging, fragment merging, zero-duration interpolation, speech onset)
- [ ] Transcribe non-English audio — verify it transcribes in original language, not translates
- [ ] Skill files render correctly, cross-references resolve
- [ ] `dynamic-techniques.md` audio-reactive section uses `tl.to()`/`tl.set()` only, no `tl.call()` loops
🤖 Generated with [Claude Code](https://claude.com/claude-code)
* feat(cli,core): add standalone transcribe command, transcript normalization, and caption lint rules
- Add `hyperframes transcribe` command for transcribing audio/video and importing
existing transcripts (SRT, VTT, OpenAI Whisper API JSON, whisper.cpp JSON)
- Add transcript format normalizer (normalize.ts) with auto-detection and
conversion to standard [{text, start, end}] word arrays
- Upgrade default whisper model from base.en to small.en for better accuracy
- Add --model and --language flags to both `transcribe` and `init` commands
- Extract shared patchCaptionHtml() to eliminate duplication between init.ts
and transcribe.ts (init.ts reduced by ~55 lines)
- Add 3 caption lint rules: caption_exit_missing_hard_kill,
caption_text_overflow_risk, caption_container_relative_position
- Update captions skill with model guide, format docs, music guidance,
text overflow prevention, caption exit guarantee pattern
- Expand captions skill trigger to cover lyrics, karaoke, lyric videos
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* docs(cli): add transcribe command and --model/--language flags to CLI docs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(cli): fix blank template lint issues
- blank/index.html: remove data-start from video (was nested in timed parent),
add class="clip" for initial hidden state
- blank/captions.html: add max-width + overflow:hidden to prevent text clipping,
add tl.set hard kill after exit tween to prevent stuck captions
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* docs: add lint-after-edit rule to repo and project CLAUDE.md
Agents must run `npx hyperframes lint` after editing compositions.
Also expand captions skill description in project template.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* style: format _shared/CLAUDE.md
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
James