TVout "solutions" are a wildcard with any card. Most suck and are unknown as far as how they operate internally.I've spent literally years trying to get the g400 to look "picture perfect" under framebuffer/X/matroxset and have never succeeded. If you know anything more, I would love to hear about it.
Yes, but proper ntsc resolution is not 59.9 Hz... it's 29.97Hz, interlaced. I use this:
Do you have a modeline that sets a proper ntsc resolution and timing? 720/640x480 @ 59.9 cycles/s?
ModeLine "coryntsci" 14.3 720 760 824 910 480 484 492 525 interlace
... with a homebrew circuit to modulate RGB from the VGA at this proper frequency into NTSC Y/C and Composite. It is *NOT* a rate/scanline
converter which is what almost all tvout cards use. If you use that modeline on a VGA monitor, it won't like it.
Which it can, but unless you are using production-quality hardware with video genlocking, what you record will not be exactly synced with what you get out.I'm not sure what you mean by this. What interlacing? All I want mythtv to do is record a signal (interlaced since it's standard NTSC) and play it back exactly as it would have been sent to the TV directly; so that means recorded interlaced and played back, interlaced. Now that may (or most likely) mean packing two interlaced fields into a frame, but the video card should display the fields interlaced, one after the other.
It's a lot more complicated than most people realize. Everyone wants a "standards compliant" NTSC modeline for their XYZ-brand card. Trouble is the one common component in all of them (the tvout scanline converter chip) is the *ONLY* part that is responsible for generating standards-compliant output. There's typically little or no control over that and any modeline tweakings are masked by its operation.Any pointers on how to set configure all of this (the tv-out part for the g400) because after many years of searching, I just have not been able to find anything suitable.
Get thee to google for g400 tvout setup.
-Cory
************************************************************************* * Cory Papenfuss * * Electrical Engineering candidate Ph.D. graduate student * * Virginia Polytechnic Institute and State University * *************************************************************************
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