analog video capture issues

soydios

Platinum Member
Mar 12, 2006
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I have a Radeon X1900XT w/ VIVO and 6.10 Cats, installed with an Asus P5W-DH, Intel C2D E6600, and 2GB of DDR2-800, and I'm trying to back up all my old VHS tapes (feature films, home videos, insurance videos, etc.) onto my computer for eventual transfer to either my iPod or DVD (once I have a video file on my computer, I'm very familiar with the process from there).

I have three different sources (VHS VCR, S-VHS camcorder, MiniDV camcorder) that I have tested over both S-Video and Composite into both the VIVO inputs on the graphics card and into a plain television.
I've run into a problem with the first two pieces of hardware, both of which are twenty years old: the video will capture smoothly for about the first half-second on the computer, then most of the frame will either freeze or loop over the same quarter-second clip of video. The audio (captured via on-board Realtek sound line-in) and roughly the top 20 lines of the video frame continue uninterrupted. This behavior is exhibited over both S-Video and Composite cables.

The video output as viewed on the television is totally fine, thus the problem is with the computer.
This behavior does not happen using the newer MiniDV camcorder's analog output and the computer, which leads me to suspect that the problem lies with the older hardware.
This problem occurs with both Windows Movie Maker and Roxio Media Import (part of Easy Media Creator Suite 9), which leads me to believe that it's a hardware issue, not software.
I've tried playing with interlacing settings in Catalyst Control Center, and changing decoders in the video software's advanced settings, all to no avail.

So, does anybody have any ideas? Can my graphics card (to refresh your memories: ATi Radeon X1900XT w/ VIVO and 6.10 driver suite) not decode some kind of outdated NTSC output from the twenty-year-old hardware?

Thanks in advance for any help or advice!

P.S.
As a last resort, I could try dubbing hour-long segments of each tape into the MiniDV camcorder and splicing them together, but that would take over twice as long.