[mythtv-users] HDHomeRun channel scan fails in 0.29

[E James]

I'm trying to set up a new master backend using Lubuntu 16.04, MythTV 0.29 and one or more HDHomeRun Dual tuners. I have the database working, the backend working and the frontend working. HDHomeRun Config shows the tuners receiving a near perfect signal and I can view the channels with VLC but I can't get the channel scan to work properly. I did have one scan which successfully listed the HD channels and another which listed HD and SD channels but they didn't work. Most of the time the scan works up from 21 to 27 and then quickly skips through all the rest and says no channels found. My UK multiplexes are 39 (HD), 42 and 45 (SD). What is the significance of "Input name"? Should it be set to "MPEG2TS"? Yes, I do make sure that mythbackend is stopped. I never had this problem with 0.27. Can I still install 0.27? What exactly is the meaning of the term "transport"? Is it important that I understand it?