XMPP Large File Transfers via STUN/TURN (opens in new tab)

A bit of a special topic today, but I wasn’t aware about this before: For small files and videos, my XMPP server uses HTTPS and a local file storage at the server side to store and forward files. The file size limit is configurable and by default 20 MB. This suffices for 99% of my use cases. However, what about larger files, e.g. videos?