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Old 18th June 2010, 23:14   #11  |  Link
foxyshadis
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Join Date: Nov 2004
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I always do strong denoising after resizing, in HD:
1. Less work is always faster, of course.
2. Noise will automatically be averaged into the signal, provided you don't use lanczos or point, and provided it's not clustered noise.
3. Motion compensation works better on high-motion and no worse on low motion, and can use faster settings. MVTools is very good at capturing subpixel motion, so I wouldn't worry too much about losing details; instead, details are more compact and easier to find & match, and the noise reduction of #2 often gives you slightly better matches.

However in SD, you can remove so much of the signal, or make details so tiny, that resizing before denoising is more detrimental to quality. It depends on how much fine detail you want to keep.
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