What computer operating system is your Premiere Elements 8 running on? Are you running the program as the 8.0.1 Update? Do you have the
automatic Background Rendering and AutoAnalzyer features disabled? Just background questions for now - answers may be needed as we progress into
Are you making a firewire connection between the miniDV camcorder and the computer? For all intents and purposes, you need a firewire connection to get the DV and HDV data captures to work in Premiere Elements Capture Window. Are you selecting a Premiere Elements project preset that is in agreement with your source. For example assuming NTSC setup...
if DV Capture Firewire
NTSC DV Standard 4:3
NTSC DV Widescreen 16:9
if HDV Capture Firewire
Can you do the capture firewire into Movie Maker (Windows) or iMovie (Mac)?
Let us start here and then decide what next based on your answers.