CurtPalme.com Home Theater Forum

**AnalogRocks**

Hey Craig,

I have an RCA RPTV here from 2003 that has a "Cinerama" mode that take a 4:3 signal and stretches it to 16:9 but doesn't distort it like a regular 4:3 to 16:9 stretch would. It sort of pinches the picture in the middle if you get my meaning, to make fill the 16:9 screen but look right.

Do you know of a stand alone scaler that can do this? Most I find have 4:3 or 16:9 settings but not the - twiddle the knobs - fine tuning you need to pull this off.

Thanks

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Lumagen scaler have NLS non linear stretch. You can stretch the outer portions but it leaves the middle alone pretty much.

http://www.lumagen.com/testindex.php?module=faq_vis

Q: How do I use the new NLS (non-linear stretch) command?
A: NLS is used to stretch a source with a 4:3 aspect ratio to fit a display that has a wider aspect such as 16:9 (aka get rid of the sidebars). The goal is to make some trade-offs in order to make it look as natural as possible. The older NLS command was limited and gave an overly stretched look to the sides. The new NLS command is very flexible and will let you adjust it to what works best for you.
To enable NLS mode the input aspect must be set to 4:3. Secondly the NLS command must be enabled. Navigate the onscreen menu to IN->CONFIG->ADJ->SIZE->NLS. It will report that its either "OFF" or set to "NLS1", "NLS2" or "USER" mode. NLS1 is the equivalent of the old NLS mode for compatibility. NLS2 is a mode most users will find to be a better setting. USER mode allows you to make your own adjustments to the NLS parameters. When you select the NLS command you can navigate the options and adjust the settings using the arrows on the remote. On the top line select the NLS mode desired. As long as you've turned it on you can then see and adjust the NLS parameters. If you set the mode to a predefined mode you can still adjust the parameters but the mode will automatically be changed to USER. When NLS is enabled the image stretch is broken up into 3 sections. The left side, center and right side. The center is stretched less than the sides and the 2 side sections are stretched symmetrically to a greater degree then the center in order to fill the screen.

The NLS parameters are:
CENTER STR% : This controls how much the center section is stretched. Can be set from 0-24% in 2% steps.
CROP TOP% : Controls how much to crop off the top. By cropping a little bit from the top and bottom you can lessen
how much stretching is necessary. From 0-12% in 2% steps.
CROP BOT% : How much to crop off the bottom. From 0-12% in 2% steps.
CENTER SIZ% : Controls how big the center section should be as a percentage of the image. From 15-70% in 5% steps.
PILLARBOXED : If you have a 4:3 source with sidebars (making it 16:9 in its entirety) then set this to Y. This will then
crop off the sidebars before performing the NLS stretching.
1.85 AS OFF : If you would like to use the 1.85 button on the remote as a 4:3 input aspect selection with NLS off then set
this to 'Y'. The 4:3 button will still select a 4:3 input aspect with NLS on. This setting is global for all memories which have
NLS set to NLS1/NLS2/USER in the menu. On these memories you can still access 1.85 via the left/right arrows. For
memories which have NLS set to OFF the 1.85 button still selects a 1.85 input aspect.
New with 120805 release: You have your choice of the LBOX or 1.85 button to use as the NLS disable button.

When NLS is enabled it will attempt to fill the screen with your source at 4:3 (1.33) aspect for any output aspect ratio up to 1.85. If your output aspect ratio is greater than 1.85 it will limit itself to 1.78 and add sidebars to complete the image.

**AnalogRocks** · Posted: Fri Jan 23, 2015 9:11 pm Post subject:

Ahhh haa. Now which model$ have this feature?

ecrabb · Posted: Fri Jan 23, 2015 9:49 pm Post subject:

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

ecrabb · Posted: Sat Jan 24, 2015 1:46 am Post subject:

**AnalogRocks** · Posted: Sat Jan 24, 2015 4:01 am Post subject: