Originally posted by: zion
And another thing, my captures still seem to be missing a few pixels of both sides. I was hoping that by installing a new capture card and new drivers this would be fixed, but my new card is doing the same thing. Does anyone have any idea why I might be getting this? I wonder if VirtualVCR is causing this issue somehow?

Your card is a CX23881 based card. Those chips can only capture 688 horizontal pixels. For any capture resolution that you specify over that, the chip will either pad to the desired resolution, or scale the picture. If it is scaling to 720 then the AR will be incorrect, however I believe your card is padding the extra pixels.
You should capture at 688 x 480 and pad to get the desired 720 x 480. The added pixels should not be visible on a TV set anyway due to overscan. Don't worry too much about the lost pixels, as the quality of this chip outweighs the smaller capture window size.

Here is a thread I found that explains it clearly:
http://forum.doom9.org/showthread.php?s=81f70e93da02b8f99fc5cf8fbb8bbd52&threadid=73102&highlight=CX23881

If you want to understand the whole issue, start with these doom9 guides:
http://www.doom9.org/index.html?/capture/sizes_newbies.html
http://www.doom9.org/index.html?/capture/sizes_advanced.html
http://www.doom9.org/index.html?/capture/start.html