Filter Set Up

[~bT~]

Can anybody tell me which filter I need where? This is my set up currently.
MPEG2Source("D:\DVD\************\VTS_01_1.d2v")
Crop(6,50,-6,-50)
FieldDeinterlace()
BicubicResize(656,288,0,0.5)
Tweak(bright=10, cont=1.1)
UnDot.Deen()

Should UnDot.Deen be before Tweak?
Thanks in advance.

[~bT~]

Anybody have any answers please?

[Blue_MiSfit]

It helps if you provide more information regarding what you are trying to do.

It looks like you are trying to deinterlace a DVD source, resize it, and then filter some noise.

I dont think changing the order of Deen().Undot() and Tweak() will make much difference.

Some pointers
1) Instead of UnDot, use RemoveGrain(mode=1). It does exactly the same thing but is a bit faster. There are special versions of RemoveGrain (removegrainsse2.dll and removegrainsse3.dll) that can give faster results depending on your CPU's capabilities. Also RemoveGrain is more flexible. mode=2 processes chroma and luma, and mode=5 does the same only gentler (IIRC)...

2) Deen is very powerful. Using UnDot() (or removegrain(mode=1) after Deen() is like shooting a building, after you drop a nuke on it.... There's just not much point. :)

3) I have found fft3dfilter/fft3dgpu to be better and more flexible in most cases than Deen(). Plus, the fft3dgpu variant is WICKED fast assuming you have a decent video card (Pixel Shader 2.0 required)

4) What is your source? Deinterlacing may not be necessary. You may be able to force film / ivtc to produce better results. If not, other deinterlacers may work better. Also, If memory serves (I never deal with interlaced stuff), you should deinterlace before doing anything else (IE before cropping). That's not scripture though, don't quote me on it :)

5) What is your target? XviD? DivX? x264? What bitrate? How much motion is in this source? Post screenshots (host images elsewhere), or even better yet, post a VOB sample (rapidshare etc), and we can advise you further.

When in doubt, post exhaustive information.

Oh, and don't bump threads :D

Good luck,
~MiSfit

[~bT~]

@ Blue_MiSfit
Thanx for the info. Will look into removegrain and fft3dfilter.
BTW, how sure are u about the deinterlace before anything part? I might consider changing the order if its true.

[unskinnyboy]

BTW, how sure are u about the deinterlace before anything part? I might consider changing the order if its true.
Change the order, you must.

"Deinterlace before anything" part is correct, especially crop & resize. For the deinterlacing to work properly, the deinterlacer need the full vertical resolution, proper field order and the untouched video. If you crop before deinterlacing, you run the risk of changing the field-order, which means your deinterlacer won't work any more with the intended settings.

[MrTroy]

Also, I would recommend denoising before resizing. Resizing first creates bigger noise -> you need stronger denoising -> image more blurred.

[Blue_MiSfit]

Yeah, what unskinnyboy was saying makes sense. That was basically what I was thinking, but I wasn't totally sure.

Denoising before or after the resizer doesnt matter too much unless you are resizing a lot, and there is a lot of noise (IMO).

I usually do
<source>
<crop>
<denoise>

Since I generally prefer to keep resizers out of the encode. But when I do resize, I do it before denoising.

Anyway, good luck.

~MiSfit

[~bT~]

Thanks guys for the info.
@unskinnyboy
Great toolbar, using it all the time. Thanx!