resize filter

[brown1978]

I use the Bilinear filter my movies look a little blurry, should I use soft bicubic or neutral or sharp, can any one explain which one is better to use.

[Acaila]

Supposedly bilinear is best for downsizing and bicubic for upsizing. But as far as I have seen bilinear is always too blurry, and soft bicubic almost as much. So I just stick to sharp bicubic, even though it gives largest filesize.

[roy]

What folter you will use you can only properly determine when you do a compresability check. For every filtry you will get diffrent result so be carfull, what filter yuo are using. Read very carfully guide on Doom9.

[brown1978]

When you say larger file size with sharp, are we talking a few megabytes or hundreds.

[xzquala]

I always use sharp, that doesn't mean you have to too.

[FxOverlord]

Depends on the movie to which one i use but mostly i try and stick to neutral bicubic. Bilinear too soft and sharp bicubic too sharp. This is a "rough" guide for me. Of course depends on what you find visually pleasing :)

Noisy movie - bilinear resize
My file size is too large - bilinear
I've reached 640 x ... and still have bits left - sharp bicubic

So to answer your question - for me it depends on the source but i try neutral resize first and see if it looks good or if i can reach a nice rez b4 i try other resizing.

[TheWEF]

Originally posted by brown1978
When you say larger file size with sharp, are we talking a few megabytes or hundreds.

it depends on the movie, the resolution, other filters,...
as a rule of thumb i would estimate:

max filesize with sharp bicubic will be 30-40% higher than with bilinear, the others lie in between.

meaning that e.g. if you get a comp-check-perc of 50% with sharp bicubic you might reach about 65% with bilinear.
the picture will be more blurred but the codec macroblocks will be less visible.

for a perfect rip you need the correct balance of these 4 factors:
compressibility - bitrate - resolution - filters.

and a litte experience ;)

wef.