The basic, starter-level equipment in order to do this is very easy to obtain. You should be able to find a unit that will convert component and/or S-Video into a digital signal for very cheap.
Is there supposed to be a list of publicly available pods on https://funkwhale.audio/ ? The list seems empty. The only list of Funkwhale pods I've ever seen is on the dashboard https://network.funkwhale.audio/dashboards
The basic, starter-level equipment in order to do this is very easy to obtain. You should be able to find a unit that will convert component and/or S-Video into a digital signal for very cheap.