How can I transmit large files via a Telegram Bot?

I've created a bot to send videos over 500MB, yet transfers fail despite Telegram's increased 2GB limit. How can I overcome this file size restriction?

Based on my experience when facing this file size limit, the best method is to look beyond sending the file directly via the bot. One option is to store the file on a secure cloud service or external server and then transmit the download link through the bot. This bypasses Telegram’s file limit and often provides better control over the download process. It also allows you to leverage extra features such as resuming downloads and tracking, which might be beneficial for very large files.

I have tinkered around with Telegram bots and large file transfers in a few projects. My approach was to actually split files into smaller chunks that the bot can handle. The process involves breaking the file into manageable pieces that are then sent in sequential messages. On the receiving end, creating an automated script to reconstruct the file after all parts have been received helped ensure data integrity. At first it was a bit tricky to set up the reassembly logic, but careful testing and incremental adjustments made it a robust solution.