For those having the issue where you can't capture in .mp4 at all, I found a solution. Instead of installing and reinstalling, uninstall ANY codec packs you have other than the ones that come with your Roxio Game Capture HD PRO software. I had the K-Lite media codec installed and after I uninstalled it, I was able to capture (not very well) in .mp4. I don't know if it's just me, but .mp4 doesn't look as good as .mt2s. Since nobody has offered to help anybody having trouble with this issue, I took it upon myself. You're welcome.