TDeinterlacing help please

[audyovydeo]

Hello

I've bene banging my head against this problem for some time now -- need external advice. At first I thought it was a deinterlacing problem. Now I'm coming to think it's just a bad quality camera,but I'd like to settle the matter.

Here is some footage, deinterlaced differently. My problem is the residual lines in the sky. Also, can anyone put a name to this artifact ? I don't think this is combing ?

1. interlaced original :

http://mapage.noos.fr/manamba/interlace/interlaced.jpg


2. TDeint(0,0)

http://mapage.noos.fr/manamba/interlace/tdeint.jpg


3. interp = SeparateFields().SelectEven().EEDI2(field=0)
TDeint(order=0, field=0, edeint=interp)

http://mapage.noos.fr/manamba/interlace/eedi2_tdeint.jpg


4. interp = nnedi(field=0)
TDeint(order=0,field=0,edeint=interp)

http://mapage.noos.fr/manamba/interlace/nnedi_tdeint.jpg


I've played around with just about every TDeint option, with no solution. Feedback gladly wanted.

cheers
audyovydeo

[nonsens112]

First, I would try MvBob() or SecureBob() from MVBob package instead of EEDI/NNEDI.

Subtle combing in the sky can be removed (I think) by setting mthreshL and mthreshC parameters of TDeint lower than default value of 6, but there will be more residual dots. I set them to 2 and solve this problem with following denoisers.

Then, why didn't you do deblocking before deinterlacing? I think it is really needed there.

Best wishes, 112.

[audyovydeo]

Then, why didn't you do deblocking before deinterlacing? I think it is really needed there.



Thanks for replying.
As a rule, the first thing I do to interlaced footage is to deinterlace it. Then comes all the rest. I dont see what good can come from deblocking interlaced material.

Subtle combing in the sky can be removed (I think) by setting mthreshL and mthreshC parameters of TDeint lower than default value of 6, but there will be more residual dots. I set them to 2 and solve this problem with following denoisers.

I tried that - tried just about every option in TDeint fact, but it was not successful.
The only thing that managed to give me reasonable results was to do a vertical blur(). That attenuates the lines, but of course screws up the video quality big time.

re: *Bob()

TDeint seems to me technologically a step ahead of any Bob package, so I've been reluctant to step back.
Also, I notice (this was my very first use of NNEDI) that EEDI2 yields better antialiasing than NNEDI.

Any other feedback ??

cheers
audyovydeo

[nonsens112]

As a rule, the first thing I do to interlaced footage is to deinterlace it. Then comes all the rest. I dont see what good can come from deblocking interlaced material.
I meant separating fields, then apply deblocking, then weave, of course.

TDeint seems to me technologically a step ahead of any Bob package, so I've been reluctant to step back.
I proposed a step staight forward - using (smart)Bob+Tdeint instead of (dumb)EDI+Tdeint.