Does Field Deinterlace = Smart Deinterlace?

[GreatKent]

I have read the FAQ in http://gknot.doom9.org/faq-general.html#gq9, it seems to tell me, for Movies, Smart Deinterlace is better than Fast Deinterlace.
I wonder if 'Field Deinterlace' means 'Smart Deinterlace'? since I cannot find the 'Smart Deinterlace' in GKnot.
Thanks!

[ArdenDag]

I think so.

FieldDeinterlace is part of the Decomb filter, and gets added to the .avs script created by GKnot.

It also adds VerticalReduceBy2 (Fast Deinterlace)

and the GreedaHMA deinterlacer

Those are all options in the GKnot .avs file that can be edited by you manually:

# DEINTERLACING
#FieldDeinterlace()
# or use
#VerticalReduceBy2
# or maybe
#GreedyHMA(1,0,0,0,0,0,0,0)

[Fox Mulder]

and IMHO GreedyHMA(1,0,0,0,1,0,0,0) looks better than FieldDeinterlace yet.

[ArdenDag]

I hope neuron doesn't see that, he hates seeing people bash FD ;)

[hakko504]

Originally posted by ArdenDag
I hope neuron doesn't see that, he hates seeing people bash FD ;) Now you tell me...:(

:D :devil:

[GreatKent]

oh I see, thanks for your help!

[Fox Mulder]

Originally posted by ArdenDag
I hope neuron doesn't see that, he hates seeing people bash FD ;)

Excuse me, but I LOVE Decomb and admire Donald Graft, so I don't like the irony.:sly:
That's why I used IMHO (In My Humble Opinion), because I kinda like the softer deinterlaced image that GreedyHMA provides with vertical filter turned on. Maybe i'm wrong doing this, I dont know. Anyway I don't deinterlace much, but I use Decomb to IVTC ALWAYS.
neuron2 probably will not get offended because he is a very intelligent man.:cool:

[hakko504]

Arden referred to a discussion I had with neuron2 in these threads.
http://forum.doom9.org/showthread.php?s=&threadid=40044&perpage=40&pagenumber=1
http://forum.doom9.org/showthread.php?s=&threadid=39963

[N_F]

When you read the discussions hakko mentions it seems clear Smart Deinterlace is not the same as Field Deinterlace.

I'm very uncertain, but I think Smart Deinterlace is some VDub filter :confused:

[N_F]

http://shelob.mordor.net/dgraft/index.html

Smart deinterlace does not exist as an option in 0.26. I believe it did in 0.23, though I'm not certain. Don't ask me how a VDub filter was used by Gordian Knot 0.23 ...

[hakko504]

I just checked Dividee's site (http://users.win.be/dividee/) and the mpeg2dec.dll included with GordianKnot does include a SmartDeinterlace. It is a port of Don's VD filter to AviSynth. It isn't maintained (or used) for a number of reasons: The basic algo is the same as is used by fielddeinterlace. Don doesn't want to maintain 2 different versions of the same filter. Fielddeinterlace can do everything Smart can and a lot more. And lastly, the newer filters are better in almost all respects, better quality, faster, more flexible and so on.

I must admit I had forgotten this filter, but when I started thinking about it I remember I stopped using it because Greedy (at the time) turned out to be a better solution.

[N_F]

@hakko

In your discussion with neuron I got the impression you really liked Smart Deinterlace. Was that the VDub filter by Don?

[hakko504]

No, the filter I was referring to in those threads was Smoothdeinterlace by Gunnar Thalin(VD) & Xesdeeni(AviSynth port), not Smartdeinterlace.

Smartdeinterlace is not a very good name for a filter really, it is more a class of filters. Smart (both deinterlace and bob) refers to the ability of deciding what pixels needs to be deinterlaced. As opposed to the blind methods like clip.Separatefields.BicubicResize(clip.width,clip.height).selectEven() ('blind' bob() will of course omit .selectEven() )