Originally posted by coachguy
When a good size image moves across the screen, or a medium size image moves fast, just the moving image has big groups of lines that distort together.
JVC records fine, anything to the pc does this, and looks like it is recorded that way in the file.
This sounds exactly like de-interlacing artifacts. If what you recorded was in 1080i format, and you played it back using a player that doesn't do a good job of deinterlacing, then this is exactly what you see. (It's one reason I wish they had completely abandoned the whole interlaced format in the new HD specs.)
I see the same thing when watching live TV via 1394 from VLC. When I play the files back using my MyHD 120 card, they look great. It has a great HW deinterlacer built in.
What are you using to play the files back? If your using WMP, then what DVD software do you have installed? WMP doesn't come with any MPEG2 decoders, so it relies on 3rd party decoders (like WinDVD, PowerDVD, etc...)