I just saw the Live TV announcement that extends the DVR tuner support. As a recent Plex Pass user and a long-term MythTV user (since 2005,) I'm thrilled at the idea to integrate that last functionality which was lacking for my use. Great work Plex devs!
However, I'm perplexed why only such a limited number of devices are supported. Furthermore, I can't understand why Plex supports the quadHD PCIe card -- the only non-USB or network device in the list -- and not any ATSC/DVB-(C/T) ( card supported by LinuxTV.
Like many other potential Plex DVR users, I already own tuners for my system. Apart from two old-school PCI pcHDTV HD5500 boards, I also have a fairly recent Hauppauge WinTV-HVR2250.
So I'd rather not have to invest into the only PCIe support card while I already have all the tuners I should need. Especially when "competitors" do use the V4L API and consequently support mostly any card once its shows up as a DVB device.