driving secondary monitor

megabit wrote on 3/11/2008, 12:30 PM

I am about to buy a Full HDTV to be (also) used as a full display, secondary monitor with Vegas. Have just tried using the secondary DVI output of my ATI X1600XT graphics card - and was disappointed to see that the frame rate of 25fps (8bit 25p HDV project, no FX) goes down considerably when feeding the secondary display! Why is that, and which is a tested solution for obtaining full plaback speed (well, at least the same as Vegas is capable of with just the preview window). Glenn has advised using i.link to analog conversion, but I don't want to use my camera for that. What gives?

Will a newer/faster graphics card help (I doubt it, as Vegas is obviosuly not using GPU hardware acceleration). Any specialized solution that is known to work with Vegas?

Comments

megabit wrote on 3/12/2008, 8:29 AM

PS Just wanted to bump it up a little, while at the same time ask an explicit question: do Vegas users with the newest ATI/nVidia card models (you know, those with HD in names and HDMI outputs) get full speed playback on the secondary HD monitor/TV? Or is a specialized solution like AJA or BlackMagic Intensity the only solution?

Also, out of curiosity: if my CPU/HDD/project settings allow full speed playback from timeline in the preview window even being Best/Full, why not at a secondary monitor connected to the same card?

TheHappyFriar wrote on 3/12/2008, 8:36 AM

from what I know (and my experience) the cards only accelerate video if it's run through a video player, NOT through vegas.

GlennChan wrote on 3/12/2008, 3:58 PM

Any scaling in the secondary windows display might slow things down.

If you can get the pixels to map 1:1 that would avoid that.

Kennymusicman wrote on 3/12/2008, 4:08 PM

I can certainly get full-speed HD playback on my secondary display (both running 1920x1200) - but once I start adding in effects things begin to slow a bit - depending on source and effects of course.