Question regarding Mike Crash's Smart Deinterlacer

Cliff Etzel wrote on 2/27/2008, 10:28 AM

I can't seem to find any info regarding the various settings for this filter.

Can anyone suggest what options provide the best image quality for 1080i HDV footage when applying the filter???

Also, once applying the filter - should the project properties be changed from 60i to 30p???

Cliff Etzel - Immersive Video Journalist
bluprojekt | ImmersiveVJcom

Comments

jrazz wrote on 2/27/2008, 11:05 AM

How did your post manage to make it above the stickies? That's weird.

j razz

GregFlowers wrote on 2/27/2008, 12:09 PM

Here are some instructions I saved from a previous thread. I have tested these personally and liked the results.

"Motion processing" -> "Field only"
"Compare color channels" -> On
"Use cubic for interpolation" -> On
"Motion map denoising" -> On
"Motion threshold" -> 0-15 (I like a setting of between 0-5)
"Scene change threshold" -> 100
All other boxes should be unchecked.

Go into Project Properties and change "field order" from upper to none (progressive scan.) Also change "deinterlace method" from blend or interpolate to none.

I have had good results from these settings. I forget who originally posted them a few years ago.

Cliff Etzel wrote on 2/27/2008, 12:28 PM

Thanks Greg :)

Cliff Etzel - Immersive Video Journalist
bluprojekt | ImmersiveVJcom

Laurence wrote on 2/27/2008, 1:50 PM

I really don't like this deinterlacer. In numerous tests, I always like a simple Vegas blend fields or interpolate better.

One thing you really have to watch out for is that you really can't resize or zoom into the footage at all with this deinterlacer. You get really bad resized interlace comb squiggle if you do.

Cliff Etzel wrote on 2/27/2008, 4:13 PM

Laurence - why utilize one or the other? I'm confused as to which one means what, when to use one or the other, etc.

Cliff Etzel - Immersive Video Journalist
bluprojekt | ImmersiveVJcom

farss wrote on 2/27/2008, 4:50 PM

The Smart de-interlacing is adaptive within the frame. If there's an area with little to no motion it'll blend the fields in that part of the frame. So for that part of the frame you get as much resolution as there is.

Areas of high motion it switches to interpolation to avoid jaggies but with a loss of resolution. That's not normally an issue as we can't see fast moving object that clearly anyway.

The de-interlacing provided in Vegas is all one way or the other. Blend the two fields or interpolate one field.

I haven't tried using Mike's filter during downscaling however you would need to be careful to ensure that it's working BEFORE the downscaling is done, otherwise you would get some bad results. That little yellow triangle might hold the answer.

Bob.