I use an IPTV provider that uses a M3u playlist. I've tried a variety of PC/Server solutions for recording IPTV but never found anything reliable.
I'm wondering if anyone has managed to use the MiBox as a PVR? Ideally to drop recordings on a network share (for Plex playback) and ideally the ability to schedule recordings remotely (unlikely I expect)
ProgTV is your friend.
Also, IPTV Extreme can get the job done.