Vale construir sua versão de Netflix?

Build a self-hosted personal media streaming server and web player. Single project, runs on my own machine, no accounts service, no cloud, no telemetry.

Stack, no substitutions:
- Node.js with TypeScript, Fastify for the API
- SQLite via better-sqlite3 for the library database
- React with Vite for the frontend, plain CSS, no component library
- ffmpeg and ffprobe invoked as child processes
- hls.js in the browser for playback

What it does:
1. Reads MEDIA_ROOT from .env and recursively scans it for video files (mp4, mkv, avi, mov). Parses filenames into title, year, and optional season/episode.
2. Runs ffprobe on each file to record duration, resolution, codecs, and audio tracks.
3. Optionally enriches each title with metadata and poster art from the TMDB API using TMDB_API_KEY from .env. If the key is missing, skip enrichment gracefully and show a generated placeholder poster.
4. Serves a library browse UI: poster grid, search, filter by movie vs series, series drilldown to seasons and episodes.
5. Plays video at /watch/:id. If the source is browser-friendly h264/aac, stream it directly with HTTP range support. Otherwise transcode on the fly to HLS with ffmpeg, segmenting into a cache directory, and serve the playlist to hls.js. Reuse cached segments on repeat plays.
6. Tracks watch progress per profile. Local profiles are just names in SQLite, no passwords, no auth provider. Resume where you left off, mark watched at 90 percent, and show a Continue Watching row.
7. Extracts embedded subtitle tracks with ffmpeg, converts to WebVTT, and exposes them as selectable tracks in the player.
8. A CLI command "npm run scan" for rescanning, plus a watcher that picks up new files while running.

Explicitly out of scope: any content acquisition, downloading, scraping, or DRM. No native mobile or TV apps. No recommendation engine beyond a recently-added row. No multi-user auth or public internet exposure; bind to localhost by default and document that exposing it is my problem.

Deliver a README with setup steps, a .env.example listing MEDIA_ROOT, TMDB_API_KEY, PORT, and TRANSCODE_CACHE_DIR, and seed the database on first run. Keep the whole thing runnable with npm install then npm run dev.