aiogram VS telegram-bot-api

It could be made to join groups, I'll really consider that if there is a demand. I'm using Aiogram bot and it support this.

Here, the decorators have already used filters built into aiogram. The entire list of such filters can be found here.

Of course, it's good to write API requests yourself. It reduces the dependency on third-party libraries and allows you to control the behavior of the code more. But when there are more such methods than twenty, it already increases the size of the code. It becomes difficult to manage all the logic. This is where third-party libraries(frameworks) come to the rescue. After choosing a language, you can consider the options of different libraries from the list here, on the official Telegram page. For JavaScript I recommend using node-telegram-bot-api and telegraf. For Python you can take pyTelegramBotAPI and aiogram(highly recommended).

you can start by looking at python-telegram-bot, pyTelegramBotAPI, aiogram. The rest is looking throught the documentation.

aiogram

I have never used python-telegram-bot (which looks like to be your case), but with aiogram, it's pretty easy to send mediafiles: https://github.com/aiogram/aiogram/blob/dev-2.x/examples/media_group.py (you can replace "attach_photo" with "attach video"). Note that the latest aiogram version 2.12 seems to be broken, so downgrade to 2.11.2.

Works fine for me with aiogram (Python framework for Bot API)

Telegram has a bot API server that provides API to control the bots and get updates. Their own instance has some restrictions like you cannot download files bigger than 20MB. So, using a self hosted bot API server, you can overcome those limits.

General Bot Platform Overview

We'll create a class Bot, which will be the core of our program (that's unsurprising, considering we're writing the telegram bot). During its instantiation, it will read the token from your telegram bot (to learn how to register one go here) and build a basic bot app. Along with this, we're gonna add two async methods to our class, which will serve as message handlers (functions that are invoked when a specific message is received), one for video notes and one for audio. And the last, but not least start method, which is responsible for registering the message handlers and basically starting our bot. In the end, since it's our main.py file we'll add a couple of lines to invoke this bot and start the app when the script is running.

Telegram Bot

> Telegram doesn't support bots

I think it does:

https://core.telegram.org/bots

Bots: An introduction for developers (official Telegram website)

In this guide, we saw how telegram can be integrated into a react app, walking through the process of creating a bot to sending a message to a telegram user via the Telegram Bot API. We also saw how to connect our application to Sanity studio for content management.