undot and anime

[jarthel]

where to a place it?

I basically have

mpeg2dec3
crop
IVTC (or deinterlace if already PAL)
convolution3d
lanczosresize

Thanks

jayel

[trbarry]

jarthel -

Most Avisynth filters work on progressive frames. UnDot is no exception. So it (and most filters) should be after the Telecide or deinterlace step.

Some folks have found even better compressibility doing it both before and after the resize, but I have not tested this myself. Assuming you are downsizing it is a slightly stronger (not necessarily better) filter after the resize. But I have usually tended to put it before resize, for no particular reason.

- Tom

[High Speed Dubb]

I agree on UnDot, but not for all filters. The fruit flavored filters (Peach, Grape, and especially Guava) work better on fields than frames.

Temporal smoothers in general should work better on fields, so long as the filter correctly matches the fields together. Well, technically they should be about the same quality with fields or with frames — But the deinterlacing or pulldown detection should work better if the smoother is run first. And if you’re deinterlacing, running the filter before should take about half the time as running it after.

Spatial filters like UnDot will generally work better on frames.

[DDogg]

High Speed Dubb, it sounds then like Peach might be great on interlaced DV so I would add another vote for a 2.5 version.

[jarthel]

/me has been waiting for avs2.5 version of High Speed's filters :)

if possible, yv12 :)

jayel

[trbarry]

They would definitely be a welcome addition if any of them could be easily ported.

I use DScaler Gradual Noise on almost everything these days with my Tivo though I forget which fruit flavor that corresponds to (Guava?).

- Tom

[High Speed Dubb]

I got a Tivo myself a few months back, and it took about a minute to figure out why gradual noise (AKA Grape Smoother) is more useful than adaptive noise (Peach Smoother) for a Tivo or DVD. When the Tivo or DVD is paused, or you watch a DVD intro screen, the filter detects a seemingly very reliable low noise level. So for the rest of the run, it doesn’t filter at all.

Grape is definitely portable to YV12 — There’s even a preliminary version of it on my computer. Is there any accessible AVS 2.5 filter source out there? The SimpleSample filter page has been down when I’ve checked for it.

[trbarry]

Lindsey -

The SimpleSample stuff looked there now.

But also check the source of any of my filters, at names of www.trbarry.com/filtername.zip , for instance www.trbarry.com/UnDot.zip .

- Tom (I seriously have to make a web page)

[Si]

@Lindsey

SimpleSample is also on www.avisynth.org at FilterSDK (http://www.avisynth.org/index.php?page=FilterSDK)

[crusty]

I've used Undot on a few rips now and I can say that using Undot multiple times will improve compressability more than just once.
The difference isn't really that big, maybe 1 or 2% extra, but it's there, and it's cheap in processing power. I use it in this kind of script:

Undot
Smoother of some sort
Undot
resize
Undot
smoother or convolution3d
Unfilter

Depending on the source I usually remove either 1 or more of these filters, but on really bad sources I find this to work very well.

I've had weird results putting CV3D between separatefields() and Weave() so I'm not using that combo again.

[High Speed Dubb]

Tom and Simon,

Thanks for the links. These’ll make it much easier to figure out how to make a filter which acts as expected with both AVISynth APIs.

It’s going to be a week before I’ll have a chance to write this up, though. “High Speed” is meant on a geological timescale. ;)