VOGONS


First post, by NeffePS

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Good morning, evening or whenever you're reading this.
I recently acquired an unknown brand GeForce 2 MX400 graphics card, which features both an S-Video port and a Composite output. I need that for recording an art project over to VHS. Unfortunately, I've ran into a roadblock quite early on. The card seems to have a stupid automatic overscan feature when on a typical, PC resolution i.e. 800x600 or 640x480, as seen on screenshots below. As I'm in a PAL region, I thought setting the resolution to exactly 720x576 would help, but then the whole display is shifted upwards and I can't do anything about it, even though I found the screen adjustments in the driver. When I set the output region as NTSC and the resolution to 720x480, everything looks correct, but my VCR only works with PAL, so I can't do that. I've tested 56.72 and 93.71 drivers, and it's the same case on both. Is there any tested way of fixing that, disabling the overscan or any tested driver that works correctly?

Here is the comparsion between how PAL 720x576 is supposed to look like, and how it looks in Composite (you can see the desktop is shifted upwards and there's a black bar on the bottom)

The attachment 720x576_direct.PNG is no longer available
The attachment 720x576_composite.PNG is no longer available

Here is PAL 800x600, with the annoying black borders

The attachment 800x600_composite.PNG is no longer available

Here is 720x480 in NTSC mode, which works fine but not with the VCR

The attachment 720x480_composite.PNG is no longer available

And here is the device adjustment tab, which doesn't seem to work at all

The attachment device_adjustment.PNG is no longer available

Reply 1 of 4, by zyga64

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In the past there was a program called TV Tool. You can try it.
http://web.archive.org/web/20050621012257/htt … ://tvtool.info/

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Reply 2 of 4, by NeffePS

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Thanks a lot! TV Tool has an option to set the display mode to full screen, and then adjust the position freely. It still cuts out a bit on the right side, but that's okay for my usecase.

The attachment TV_tool.png is no longer available

Reply 3 of 4, by Falcosoft

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NeffePS wrote on 2023-01-03, 16:59:

Thanks a lot! TV Tool has an option to set the display mode to full screen, and then adjust the position freely. It still cuts out a bit on the right side, but that's okay for my usecase.

TV_tool.png

Instead of 720x576 you can try 768x576. It has a 4:3 aspect ratio just like 640x480/800x600 etc. but has the same PAL optimal vertical scan lines as 720x576. So maybe it can cure the right side cropping.

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Reply 4 of 4, by NeffePS

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I'll try later but for now that's not too much of an issue. Thanks anyways!