overlays cause SloMo

d_nyl wrote on 8/9/2001, 12:45 AM
I'm doing a little band video, and for the most part Vegas Video is pretty slick. But I have a problem with combining two clips together. Case in point is I have the lead singer in the one vid clip, and I'm trying to combine a vid clip of the bass player doing his backing vox,(Like layering a jpeg?)When I do, either on the same track or going Parent/Child route, they both slow way down. The audio always stays the same, (it was ripped as a .WAV from thier cd)and even happens when I use a linear transition from other clips into another, and sometimes when I apply an effect. Is this a hardware issue?(FIC sd11 AMD 600, 256 Megs, ded. 7200 HD, ATI Rage 32MB set to High 16bit (75Mhz)) I've even tried using Velocity envelopes but just throws them out of sync. Even with preview set to draft. All captures are AVI. Any suggestions? A friend of mine keeps pushing me to use Adobe, but I've used his and didn't dig having to always do a pre-render scrub to see my changes. I love the real time stuff. Am I diong something wrong? Thanks.

Comments

Cheesehole wrote on 8/9/2001, 1:33 AM
This doesn't sound like it is necessarily abnormal behavior. Compositing tracks can be very CPU intensive. I'm on a dual 1GHz, although in the case of simply compositing two tracks, only one processor is really in use. If I layer two tracks and set the top one to 50%, and keep my preview window at half-size (which helps quite a bit), I get about 17-21 frames per second. This is in preview mode.

Using the parent/child method, which means using one track as a mask for the other track, is much harder on the cpu. I get 9-15 fps.

Draft mode gives me 20-realtime in both cases.

With a 600Mhz cpu, you should expect lower framerates. Sometimes it's hard to line stuff up tightly with audio. I usually play over a spot a few times, or switch to 50% playback speed just to be sure.
d_nyl wrote on 8/9/2001, 1:41 AM
Thanks. I don't feel so tarded. But will it render that way too? I can live with it in editing, but will it stay slow in my final render?
Cheesehole wrote on 8/10/2001, 3:40 AM
no it won't affect your render.