Align preview typography with FFmpeg output, add video/song title split, and ship OSS updates.

Separate YouTube video titles from on-video song/artist fields with Pro gating, serve curated fonts and watermark assets for 1:1 preview parity, and include billing/API/docs/deploy stack for self-hosted release.

website/docs/api/overview.md

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+---
+sidebar_position: 1
+---
+
+# API overview
+
+Programmatic uploads and batch jobs for self-hosted Songs2VID. Generate your API key under **Dashboard → Settings → API access**.
+
+Keys start with `s2yt_live_` and are shown once at creation.
+
+## Authentication
+
+Send the key on every request:
+
+```http
+Authorization: Bearer s2yt_live_your_key_here
+```
+
+Requirements:
+
+- `S2VID_EDITION=selfhosted` (Compose sets this by default)
+- YouTube channel connected (sign in with Google OAuth that includes YouTube scopes)
+
+OAuth setup: [Getting started](../getting-started.md) and Google’s [OAuth 2.0 for Web Server Applications](https://developers.google.com/identity/protocols/oauth2/web-server). YouTube scopes/API: [YouTube Data API Overview](https://developers.google.com/youtube/v3/getting-started).
+
+## Rate limits
+
+Self-hosted editions use a very high per-account ceiling (effectively unlimited for normal automation). You will rarely see `429`.
+
+If a limit is hit, the response is **429** with `retryAfterSeconds` and a `Retry-After` header. See [Endpoints — HTTP errors](./endpoints.md#http-errors).
+
+## Choosing a flow
+
+### Recommended: two-step (especially 5+ audio files)
+
+1. Upload each file with `POST /api/v1/upload`
+2. Create the job with `POST /api/v1/jobs` (JSON paths)
+
+This avoids huge multipart bodies. Self-hosted max batch size is **100** tracks per job.
+
+### One-shot batch: small packs only
+
+`POST /api/v1/jobs/batch` accepts one cover image and a few audio files in a single multipart request. Large bodies often fail with:
+
+```text
+failed to parse body as FormData
+```
+
+Prefer two-step for albums or long tracklists.
+
+### Multipart tips
+
+- Do not set `Content-Type` manually for multipart; the client must include the boundary
+- In Postman: Body → form-data; each audio field key must be exactly `audio` (type File)
+- If a file field shows a warning, re-select the file from disk
+
+## Job lifecycle
+
+1. Create job → status `PENDING`
+2. Worker picks items → `ENCODING` → `UPLOADING` → `COMPLETED` or `FAILED`
+3. Job rolls up to `COMPLETED`, `FAILED`, or `PARTIAL`
+
+Poll with `GET /api/v1/jobs/:id`. Full status tables and response shapes: [Endpoints — Poll job status](./endpoints.md#poll-job-status).
+
+## Discovery
+
+```http
+GET /api/v1
+```
+
+Returns the endpoint list and requirements (no auth).
+
+## Next
+
+See [Endpoints](./endpoints.md) for curl examples covering upload, jobs, layouts, watermarks, playlists, batch, resolutions, categories, and errors. For composition concepts (templates, blur, fine-tuning, fonts), see [Video editing](../video-editing.md).