GeForce4MX TV Out to Widescreen TV

RichardF · 06-01-03, 08:16 PM

Has anyone had any success getting the TV out from a GeForce4MX (the internal NV17 encoder) working in a resolution other than the 4:3 aspect ratio resolutions 800x600 or 640x480?

I want to create a TwinView desktop on a 16:9 widescreen TV that is not horizontally stretched. A resolution such as 800x450 or 640x360 should preserve the aspect ratio, but I cant seem to find anyone who has successfully got these resolutions working.

I'm beginning to believe that the hardware only supports 4:3 aspect ratio resolutions...

The 4:3 resolutions are fine for DVD playback (by either not scaling an anamorphic source or horizontally scaling a true widescreen video stream prior to output), but not good for a rendering text to a window (eg for the navigation menus for a media player).

The only solution I can think of for this sort of thing is to render everything to an offscreen 16:9 aspect ratio bitmap, then scale that image to 4:3 (as for a widescreen DVD) and then copy it to the 4:3 display window - but this seems like a huge waste of CPU cycles and will most likely have bad effects on display quality.

Any thoughts?

**Thunderbird** · 06-02-03, 01:34 AM

I don't think 16:9 is supported but you can try to use xfree86 modelines but that can be dangerous.

That other option you mentioned by scaling down the image is possible. I used it myself in the past. Atleast xine has a option to scale an image (on the fly). I thought it was the "a" button when using the official xine interface. What I did was to scale the image to 4:3 and on my tv it was then 16:9.

06-01-03, 08:16 PM	#1
RichardF Registered User Join Date: Jun 2003 Location: Adelaide, Australia Posts: 1	GeForce4MX TV Out to Widescreen TV Has anyone had any success getting the TV out from a GeForce4MX (the internal NV17 encoder) working in a resolution other than the 4:3 aspect ratio resolutions 800x600 or 640x480? I want to create a TwinView desktop on a 16:9 widescreen TV that is not horizontally stretched. A resolution such as 800x450 or 640x360 should preserve the aspect ratio, but I cant seem to find anyone who has successfully got these resolutions working. I'm beginning to believe that the hardware only supports 4:3 aspect ratio resolutions... The 4:3 resolutions are fine for DVD playback (by either not scaling an anamorphic source or horizontally scaling a true widescreen video stream prior to output), but not good for a rendering text to a window (eg for the navigation menus for a media player). The only solution I can think of for this sort of thing is to render everything to an offscreen 16:9 aspect ratio bitmap, then scale that image to 4:3 (as for a widescreen DVD) and then copy it to the 4:3 display window - but this seems like a huge waste of CPU cycles and will most likely have bad effects on display quality. Any thoughts?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
$849.99 - DoubleSight DS-275W Black 27" 6ms (GTG) Widescreen LCD Monitor	News	27-Inch	0	06-10-12 01:46 PM
$989.99 - DoubleSight DS-277W Black 27" 6ms HDMI Widescreen Wide Screeen LCD Monitor	News	27-Inch	0	06-10-12 01:46 PM
$679.99 - HP ZR2740w Black and Brushed Aluminum 27" 12 ms (GTG) Widescreen LED-Backl	News	27-Inch	0	06-10-12 01:46 PM
$349.99 - LG E2711PY-BN Black 27" 5ms Widescreen LED-Backlit LCD Monitor	News	27-Inch	0	06-10-12 01:46 PM
$279.99 - Acer H Series H274HLbmd Black 27" 5ms Widescreen LCD Monitor	News	27-Inch	0	06-10-12 01:46 PM

06-02-03, 01:34 AM	#2
Thunderbird Join Date: Jul 2002 Location: Netherlands, Europe Posts: 2,105	I don't think 16:9 is supported but you can try to use xfree86 modelines but that can be dangerous. That other option you mentioned by scaling down the image is possible. I used it myself in the past. Atleast xine has a option to scale an image (on the fly). I thought it was the "a" button when using the official xine interface. What I did was to scale the image to 4:3 and on my tv it was then 16:9.