# Vyla Ecosystem Glossary

Authoritative reference glossary of terms, abbreviations, and architectural patterns used across the Vyla ecosystem.

- **AES-128 Key Rewriting**: The process in Stream API where HLS encryption key URIs (`#EXT-X-KEY`) are rewritten to route through the local proxy with permissive CORS headers.
- **Cluster Primary**: The master Node.js process in Stream API that manages inter-process IPC, shared LRU caching, and worker lifecycles.
- **Cluster Worker**: A child process in Stream API handling incoming HTTP requests and executing scraper resolution.
- **ExoPlayer (Media3)**: Google's media playback library for Android, powering Vyla TV's native Leanback interface.
- **Fallback Queue**: A client-side array holding secondary video candidates emitted by Stream API to provide instant recovery if the primary stream fails.
- **HLS (HTTP Live Streaming)**: Adaptive streaming protocol using M3U8 playlists and MPEG-TS / fragmented MP4 chunks.
- **HLS.js**: JavaScript library enabling HLS playback in standard HTML5 video elements via Media Source Extensions (MSE).
- **Jitter Staggering**: A randomized delay (0–800ms) injected into scraper requests to prevent concurrent burst requests against upstream CDNs.
- **Manga Module**: A module in `@vyla-entertainment/sdk` powered by `atsu.moe` and `node-tls-client` that bypasses TLS anti-bot protections via Chrome 131 fingerprinting.
- **Server-Sent Events (SSE)**: Standardized persistent HTTP streaming protocol (`text/event-stream`) used by `/movie` and `/tv` to emit metadata and sources progressively.
- **Sidecar Process**: A companion Node.js background process bundled inside Vyla Home (Tauri v2) to supervise local services and file updates.
- **TMDB ID**: The numeric identifier assigned by The Movie Database (themoviedb.org) used across all Vyla movie and television endpoints.
- **TS Segment De-Masking**: The routine in Stream API that strips the first 120 bytes off obfuscated video chunks disguised as fake PNG or JPEG files.