Benefits to HDV->SD Downconvert with Nattress? at DVinfo.net

Gabriel Chiefetz · October 4th, 2005, 03:47 PM

Hello!

I'm trying to puzzle out the possible benefits of HDV->SD downconversion. Are there any? Or am I better off just shooting in SD? I will be delivering the end result in SD with Nattress for 24p emulation.

Specifically, which of the following workflows would yield the best result?

1) Shoot in HDV -> Capture in FCP, treat with Nattress -> Downconvert to SD
2) Shoot in HDV -> Downconvert to SD -> Capture in FCP, treat with Nattress
3) Shoot in SD -> Capture in FCP, treat with Nattress

Graeme Nattress · October 4th, 2005, 06:47 PM

I'd go with 1) for best quality. The latest Standards Converter has a downconvert option, which does the appropriate filtering to stop aliassing on the downconvert.

Graeme

Gabriel Chiefetz · October 4th, 2005, 11:36 PM

Quote:

Originally Posted by Graeme Nattress

I'd go with 1) for best quality. The latest Standards Converter has a downconvert option, which does the appropriate filtering to stop aliassing on the downconvert.

Graeme

Ah, perfect! Thanks, Graeme! So the workflow you're suggesting is:

Shoot in HDV -> Capture in FCP, treat with Nattress -> Downconvert to SD using Nattress Standards Converter

And in your view, shooting in HDV and doing a high-quality downconvert to SD is superior to simply shooting in SD?

Graeme Nattress · October 5th, 2005, 06:13 AM

"treat with Nattress -> Downconvert to SD using Nattress Standards Converter"

Is all one step. The Standards Converter does 60i to 24p and downrezzzing all in one step.

Graeme

Gary McClurg · October 5th, 2005, 01:33 PM

Graeme,

I thought I looked on your site but maybe I missed it do you have any clips of the down convert from 60i to 24p?

Thinking of the Z1 for this.

I think you're program can convert 25p to 24p also?

So if you have the Sony Z1 would it be better to shoot in 60i or 50i, of course with no CF modes on?

Thanks Gary

Graeme Nattress · October 5th, 2005, 04:25 PM

I don't have any such clips. You'd have to download the demo and try it on your own video. Try the 2.5.2 demo as it should be great for this.

You can also try shooting 50i (deinterlace with Film Effects) and using, say cinema tools to slow it down 4% to 24p, and that's also a workflow that works.

Graeme

Damien Molineaux · October 29th, 2005, 02:43 PM

Hi Graeme,

This is kind of stupid, I'll be able to check next time I go to my office as I have your Standards conversion filter set, but I'll ask anyhow. Do you have an option to downconvert to SD 4:3 and cut off the edges of the frame and eventually adjust the framing left or right ?

With my regards,
Damien Molineaux
earthing productions

Graeme Nattress · October 29th, 2005, 02:49 PM

I don't have a pan and scan option, I'm afraid. I think you'd have to do that in FCP before conversion.

Graeme

October 4th, 2005, 03:47 PM	#1
Gabriel Chiefetz Regular Crew Join Date: Oct 2005 Posts: 73	Benefits to HDV->SD Downconvert with Nattress? Hello! I'm trying to puzzle out the possible benefits of HDV->SD downconversion. Are there any? Or am I better off just shooting in SD? I will be delivering the end result in SD with Nattress for 24p emulation. Specifically, which of the following workflows would yield the best result? 1) Shoot in HDV -> Capture in FCP, treat with Nattress -> Downconvert to SD 2) Shoot in HDV -> Downconvert to SD -> Capture in FCP, treat with Nattress 3) Shoot in SD -> Capture in FCP, treat with Nattress

October 4th, 2005, 06:47 PM	#2
Graeme Nattress RED Problem Solver Join Date: Sep 2003 Location: Ottawa, Canada Posts: 1,365	I'd go with 1) for best quality. The latest Standards Converter has a downconvert option, which does the appropriate filtering to stop aliassing on the downconvert. Graeme __________________ www.nattress.com - filters for FCP

October 5th, 2005, 06:13 AM	#4
Graeme Nattress RED Problem Solver Join Date: Sep 2003 Location: Ottawa, Canada Posts: 1,365	"treat with Nattress -> Downconvert to SD using Nattress Standards Converter" Is all one step. The Standards Converter does 60i to 24p and downrezzzing all in one step. Graeme __________________ www.nattress.com - filters for FCP

October 5th, 2005, 04:25 PM	#6
Graeme Nattress RED Problem Solver Join Date: Sep 2003 Location: Ottawa, Canada Posts: 1,365	I don't have any such clips. You'd have to download the demo and try it on your own video. Try the 2.5.2 demo as it should be great for this. You can also try shooting 50i (deinterlace with Film Effects) and using, say cinema tools to slow it down 4% to 24p, and that's also a workflow that works. Graeme __________________ www.nattress.com - filters for FCP

October 29th, 2005, 02:43 PM	#7
Damien Molineaux New Boot Join Date: Jun 2005 Location: based in Geneva\|Switzerland Posts: 17	HD to 4:3 pan and scan Hi Graeme, This is kind of stupid, I'll be able to check next time I go to my office as I have your Standards conversion filter set, but I'll ask anyhow. Do you have an option to downconvert to SD 4:3 and cut off the edges of the frame and eventually adjust the framing left or right ? With my regards, Damien Molineaux earthing productions

October 5th, 2005, 01:33 PM	#5
Gary McClurg Major Player Join Date: Jul 2004 Location: Springfield, MO, USA Posts: 389	Graeme, I thought I looked on your site but maybe I missed it do you have any clips of the down convert from 60i to 24p? Thinking of the Z1 for this. I think you're program can convert 25p to 24p also? So if you have the Sony Z1 would it be better to shoot in 60i or 50i, of course with no CF modes on? Thanks Gary

October 29th, 2005, 02:49 PM	#8
Graeme Nattress RED Problem Solver Join Date: Sep 2003 Location: Ottawa, Canada Posts: 1,365	I don't have a pan and scan option, I'm afraid. I think you'd have to do that in FCP before conversion. Graeme __________________ www.nattress.com - filters for FCP