How to download youtube video in HQ (AVI/WMA)?

by (AVI/WMA), i meant that i do NOT want MPEG-4. i seriously hate having MPEG-4 videos, they are totally different than AVI/WMA because these always pop up compared to AVI/WMA videos! I have MPEG-4 videos in HQ but what i want is to download AVI/WMA videos in HQ. I'll vote if someone tell me the best answer!
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