The latest articles on DEV Community by Andrey Sobolev (@andrey_sobolev). https://dev.to/andrey_sobolev https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3941650%2F8599d974-958b-49e3-a44d-aad8e4ffe4c6.png https://dev.to/andrey_sobolev en Andrey Sobolev Wed, 20 May 2026 07:38:00 +0000 https://dev.to/andrey_sobolev/i-built-a-telegram-bot-that-downloads-youtube-videos-heres-how-it-works-1589 https://dev.to/andrey_sobolev/i-built-a-telegram-bot-that-downloads-youtube-videos-heres-how-it-works-1589 <p>Hey DEV community! 👋</p> <p>I've been building a Telegram bot called @AndyVideoBot that downloads YouTube videos and audio directly to Telegram chat. No browser extension, no website, no login required — just paste a link.</p> <h2> What it does </h2> <ul> <li> <strong>Video formats:</strong> 144p · 240p · 360p · 480p · 720p · 1080p · 1440p · 4K</li> <li> <strong>Audio:</strong> MP3 extraction</li> <li> <strong>Playlists</strong> — download entire playlists</li> <li> <strong>YouTube Shorts</strong> — vertical video supported</li> <li> <strong>Channel subscriptions</strong> — subscribe to a channel and get new uploads delivered automatically</li> <li> <strong>Dubbed audio selection</strong> — choose language when multiple audio tracks are available</li> <li> <strong>Smart cache</strong> — if someone already downloaded the same video at the same quality, instant delivery from cache (no re-downloading)</li> <li> <strong>Inline mode</strong> — share downloads directly in any Telegram chat</li> </ul> <h2> Tech stack </h2> <ul> <li> <strong>Python 3.14</strong> (free-threaded, GIL disabled)</li> <li> <strong>Telethon</strong> — Telegram MTProto client</li> <li> <strong>yt-dlp</strong> — YouTube downloading engine</li> <li> <strong>aiosqlite</strong> — async SQLite</li> </ul> <h2> Multi-bot architecture </h2> <p>The bot supports running multiple instances simultaneously sharing a single database. Each instance handles its own download queue, and files are served from a shared Telegram-based cache — so if bot A downloaded a video, bot B delivers it instantly from cache.</p> <h2> 12 languages </h2> <p>English, Russian, German, Spanish, French, Portuguese, Turkish, Indonesian, Hindi, Vietnamese, Kazakh, Chinese.</p> <h2> Try it </h2> <p>👉 <a href="https://t.me/AndyVideoBot" rel="noopener noreferrer">https://t.me/AndyVideoBot</a></p> python telegram showdev programming