There are apps that allow recording, such as progdvb and others.

Yes, lots. It all depends on the software you want to use and what system you have available. You provided no information so it's kind of hard to say.

I use tvheadend but I also have a linux VM so I not sure how much that will help you.

I have an nvidia shield and record with PVR Live app which is like a pluggin for the native live channels app.

I've commented on this before and still trying to figure out. Using 2nd gen firestick with external flash drive and OTG connected. Can anyone help ? Will it work with my current hookup. Flash drive don't seem to be working

Plex with xsteve mod

Plex with xteve, TVMosaic

Use this link, very helpful https://troypoint.com/record-iptv/

I use xteve through plex!

Here .... https://lmgtfy.com/?q=How+can+I+DVR+iptv

i offer this service...pm me