Deconstructing Telegram Media Extraction: Building a High-Performance Downloader with MTProto and Async I/O

A developer built a Telegram video downloader by reverse engineering MTProto media delivery and mapping public links to internal file objects.

The backend uses Telethon, asyncio, and Redis to fetch and cache media metadata while streaming chunks directly to users.

This approach bypasses Bot API limits, improves throughput, and keeps memory use low for large video files.

The system also handles Telegram rate limits and FloodWait throttling to stay reliable at scale.