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)

720x576_direct.PNG
Filename
720x576_direct.PNG
File size
194.3 KiB
Views
292 views
File license
CC-BY-4.0
720x576_composite.PNG
Filename
720x576_composite.PNG
File size
611.42 KiB
Views
292 views
File license
CC-BY-4.0

Here is PAL 800x600, with the annoying black borders

800x600_composite.PNG
Filename
800x600_composite.PNG
File size
592.89 KiB
Views
292 views
File license
CC-BY-4.0

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

720x480_composite.PNG
Filename
720x480_composite.PNG
File size
473.51 KiB
Views
292 views
File license
CC-BY-4.0

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

device_adjustment.PNG
Filename
device_adjustment.PNG
File size
373.96 KiB
Views
292 views
File license
CC-BY-4.0

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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3) i430FX /K6-2@400 /64M /Rage Pro PCI /ES1370+YMF718
4) i440BX /P!!!750 /256M /MX440 /SBLive!
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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.

TV_tool.png
Filename
TV_tool.png
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707.11 KiB
Views
250 views
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CC-BY-4.0

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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