I've been using the HDPVR for some time, and I find now that many of the recordings I've made suffer from some (usually minor, but annoying) interlacing artifacts. Namely, some combing along the vertical edges of objects. I'll describe my setup.
I capture 1080i from satellite, both the U.K. Freesat HUMAX box, and the French CanalSat (also a HUMAX receiver) using a FuryHD (the component output of the French Humax receiver is limited to low resolution). If I view the ongoing program from the component output of the Hauppauge HDPVR all looks fine. But after capturing the same video as a .ts file in WinTV7, and then viewing it, I get some interlacing artifacts: a bit of edge combing is apparent. At first I thought it was a problem with field order, MediaInfo indicated it was TFF so I tested this by re-encoding with VideoReDo to BFF. The edge combing was then much worse!
I find I have to de-interlace the video either in VRD, or with slightly better results using the de-interlacing in TMPGEncloder, to get a 1080p video that looks as good as the original program as viewed from the component output of the HDPVR. Trouble is, it takes a good number of hours to do this! I'm wondering if anyone has some insight into the possible source of this problem. The only quick way around the problem - rather than deinterlace, is to output 720p 50fps from the satellite boxes rather than 1080i 25fps. The final captured video then has no interlacing artifacts of course, but in 720p it has lost a bit of the clarity compared to 1080.
Viewing "live", I watch the component output of the Hauppauge box on the LG 1080i TV. Looks perfect.
Using the same signal, at the same time, to create a .ts file using the Hauppauge box and WinTV7, I then view the .ts file EITHER from the hard drive to the LG TV USB input, OR using a NetGear NeoTv to send the TV the signal, then the video shows edge combing that can be removed only by deinterlacing. Reversing fields makes it worse. MediaInfo indicates the file is TFF.