Different Resize Filter for the same film(same project)

[GreatKent]

For the same DVD2AVI project, GKnot chose different Resize Filter for me.
The first time I loaded the project, it chose Bilinear for me.
After the encoding finished, for some reason, I decided to re-encode it, so I loaded the project again, but this time it chose Soft Bicubic.
After I lowered down the resolution, it suggested me Neutral Bicubic. Then I slided the movie to another position and pressed Auto Crop again, GKnot chose Sharp Bicubic.
I really want to know what Resize Filter I should use?
(The film I was trying to encode is 'WindTalkers')

[manono]

Hi-

NeutralBicubic should do fine for most movies. Sometimes if you are making the movie for 1 CD, to help with the compressibility, you might use a different resizing filter. Just as important as the resizing filter though, is the resolution you choose and the results of the Compress Test.

[GreatKent]

Hi,
I wonder what resolution is considered to be most appropriate? With zero Aspect Error?

[manono]

Hi-

You can get very close to zero Aspect Error with any resolution, so I'd say that's not a factor (I'm assuming you don't mind cutting into the video a bit in order to achieve a low Aspect Error).

The resolution you settle on should be dependent on two things. One would be the results of the compress test, and the other would be how low of a resolution you can handle before it begins to look too soft or blurry to you and forces you to go to 2 CDs. At least that's how I look at it, and I'm sure there are other opinions on the subject.

I realize that my second answer sort of overlaps the first answer, but such things as the resizer, resolution, the compress test and the filters you use are all interconnected. Only with experience do you learn the combinations that look best to you and give you the best results.

[GreatKent]

Well, do you mean test different Resize Filters and find the one which gives best Compressibility?
It's found that, for the film, WindTalkers, Bilinear gives much better compressibility, at 0.378, while Neutral Bicubic give 0.428.

[manono]

Hi-

do you mean test different Resize Filters and find the one which gives best Compressibility

Not really-we already know the relative compressibility of the various resizers (although it's always a good idea to rediscover these things for yourself, to better understand how what the tradeoffs are). Personally, I don't use Bilinear under any circumstances (not exactly true-I've used it a few times on silent films that looked bad to begin with and didn't compress worth a damn). It compresses better, but blurs too much. Ordinarily I'll use NeutralBicubic unless I can get away with using LanczosResize (similar to SharpBicubic). But I make most of my rips for 2 CDs and decently high resolutions. If you're always trying for a 1 CD rip, then you often have to make compromises with the resolution and resizer used.