Tweaking VGA->SCART RGB timings - Page 2

By the way joe, you might want to look at using MediaPortal for playing video, as that can automatically switch the refresh rate to suit whatever video your playing (either by switching to a defined modeline or sending a command to Powerstrip to switch).

Media Player Classic - Home Cinema can also auto-switch to a defined modeline, but I don't think it supports Powerstrip, so if you don't need all the features of MediaPortal that's another option.

Actually it's a widescreen CRT TV, which is why I've setup WS resolutions/timings...with a lot of help from sneals2000

Thankfully, I'm using ATI graphics, so didn't need to build any composite sync circuit.

Yeah, I think I read some ATI cards do need the circuit. Not sure which ones though. I've only tested with an HD2600XT card and HD3200 IGP.


I'm using:
1024x576 @50Hz
844x480 @60Hz

I haven't got the PC connected at the moment, so I can't check the exact timings, but I think for 1024x576@50hz I ended up with something like:

Horizontal:
Scan Rate 15.625
Total line 1260 pixels
Active line 1024 pixels
Line sync width 93 pixels
Front porch 32 pixels
Back porch 111 pixels

Vertical:
Refresh Rate 24.999
Total line 625
Active line 576
Line sync width 5
Front porch 5
Back porch 39

Sure, will do.

I might try some of the settings on your site for 4:3 modes as I could never get the picture to fit (it was like it was majorly zoomed in) on the TV with the settings I was using before, but I'm not too bothered as this PC's only going to be used in 16:9 anyway.

OK, the figures I gave for 1024x576 @50hz are correct. The following is for 854x480 @60hz:

Horizontal:
Scan Rate 15.735
Total line 1066 pixels
Active line 854 pixels
Line sync width 85 pixels
Front porch 21 pixels
Back porch 106 pixels

Vertical:
Refresh Rate 29.971
Total line 525
Active line 480
Line sync width 31
Front porch 2
Back porch 12

I'm afraid I don't have a suitable TV to use at the moment, so can't do much until I get hold of one.

There appears to be an issue with switching resolutions whilst Mediaportal is running, so I might have to run it always at 1024x576. Is it possible to set up 1024x576@50hz and 1024x576@60hz modes?

Ah, thanks, no worries then. I doubt MP will be made compatible with switching resolution (as most people just run it at one resolution) so I'll just have to run it at a constant 1024x576@50hz.