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Old 16th March 2013, 01:29   #3  |  Link
xooyoozoo
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Join Date: Dec 2012
Posts: 197
From what I remember, resizing that drastically means that it's best to use multiple steps of 0.5 reductions each time using gaussian and bilinear. As gaussian blurs more than bilinear but iterative bilinear adds distortions, I think people generally save bilinear for the last step.

Note that the above at least applies to reduction work in image editing. I've no idea if libswscale will perform similarly.
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