Got the BGT3620 installed last Wednesday, and using the latest 8.1.0.0 drivers, installation was a breeze.
Windows Media Center in Windows 7 picked it up, found all the channels, including the HD ones, and away it went, merrily showing me TV
First off - the Guide/EPG - the HD channels have encrypted EPG data, and in order for Microsoft to decode & display it, they'd have had to pay for a licence, but more importantly - use DRM on any recorded stuff - meaning no transfer to portable devices or extenders, so they've decided to just not display any EPG data.
That, however, is easy to resolve for BBC One HD, ITV1 HD, and Channel 4 HD -
Nicely written guide, with photos. For BBC HD, however, there is no "other" channel to steal listings from, so you need to do something a bit different - using the
xmltv app and
this to send the correct parameter and schedule it.
I did have issues with the HD channels stuttering, and displaying a "previous" frame every few seconds. This, however, was resolved by updating my graphics drivers for my on-board nVidia 7100 from ~197.x to the latest 265.x release
All HD stuff I've seen so far appears to be 1080
i - you can get up loads of cool information by entering 411 as the "channel", then pressing the More Info button
I've not tried recording 2 HD channels yet, but I'll get the scheduled recordings set up soon (already got my series link for the F1 set up on the BBC One HD channel)