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so bicubic is good for downsizing
bilinear good for upsizing
trilinear good for left sizing...
blah blah blah...
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Actually the other way around. Bicubic->upsizing, Bilinear->downsizing.
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so whats best if u wanna retain the same resolution
in my case standard PAL - 720x576)???
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Just crop, no resize. Just make sure you keep the resolution multiples of 16 and you'll be fine.