Some of them can suck less, and may in fact be quite good. What I am saying is that unless you run a genlocked, synchronous 29.97 resolution with a 1:1 pixel-mapped input/output characteristic (i.e. the concept of overscanned and underscanned make no sense), it is *NOT* unprocessed. Nobody without big budgets and expensive proprietary cards can accomplish that. Everything else is a matter of degree on how much "fudging" gets done.That is true, for most, but not for the g400 -- with DirectFB. I understand what you are saying about the unknown (rather undocumented) internal operations, but one of the DirectFB developers did some great work for the g400 and utilized it's tv-encoder as it is supposed to be, producing a perfectly timed, interlaced, overscanned output that looks _exactly_ like TV. No tearing, no interlacing artifacts -- none of that.
Sounds like the fudging was minimized with that arrangement of software. It's still being fudged, however, so it's not "perfect" and unadulterated, sync-issue-free playing.But you can. I have done so for years using another PVR application that could utilize DirectFB and g400 in tv-out mode. Encoding artifacts aside, it was TV-picture perfect. You could flip between tv and the signal going through the g400 and they were identical in smoothness and picture size.
You can't get perfect, but I agree that upscaling NTSC 480 line up to 800x600 and then having the encoder chip descale it back is rather silly. At least start with an YYYx480 resolution modeline.Get thee to google for g400 tvout setup.
Been there, done that. Nobody seems to want (or able to achieve) picture perfect output. There seems to be a lot of satisfaction with taking an ntsc signal and displaying it scaled to 800x600 on the framebuffer. That seems to be the state of the art with x11/framebuffer/matroxset. Sad thing is that it can look so much better.
Other than that, I've got no MGA card that's modern enough to even do Xv. Can't help with that.
-Cory
************************************************************************* * Cory Papenfuss * * Electrical Engineering candidate Ph.D. graduate student * * Virginia Polytechnic Institute and State University * *************************************************************************
_______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
