does pre-render help speed up final render?

slambubba wrote on 11/14/2002, 9:06 PM
i have some scenes in my movie that take very long to render compared to the rest. i get about 5 fps with them, and 30 fps with the other during preview. if i pre-render the slow scenes, will that speed up my final rendering? also, if i want to render in windows media at 3 different rates, what's the best way to do this?

Comments

Paul_Holmes wrote on 11/14/2002, 9:28 PM
Yes, as long as you don't mess up your prerender with a lot of changes. Once prerendered it will save to any format without any effects-rendering delay.
Tyler.Durden wrote on 11/15/2002, 7:46 AM
You might want to revisit that...

Prerendering should help when printing to tape, but my experience is that prerenders will re-render when rendering to an avi.

You can easily test this by dropping a 5 sec clip on the TL, and adding a border FX to it... Pre-render 1 sec in the middle and then render the whole 5 sec clip to a file. Vegas will render the whole thing, even the prerender segment.

Mebbee in V4 prerenders will get compiled in a rendered file. That would be sweet.


HTH, MPH

Tips:
http://www.martyhedler.com/homepage/Vegas_Tutorials.html

wcoxe1 wrote on 11/15/2002, 8:29 AM
I agree with MartyH. I have performed several experiments, the conclusion of which is simple:

If you Print Video to Tape, things are PARTIALLY ready if you make any changes and want to Print to Tape, again. Only the things you changed need to be rendered again. This can save you a lot of time with subsequent Print Video to Tape operations. Be aware that if you make some GLOBAL change it forces a complete restart since it changes everything.

If you Render As, it ALWAYS starts from scratch. It essentially ignores anything that was prerendered in a prior Print Video to Tape.


And, I agree with his comment about VV4. SOMEthing needs to be done to preserve and judiciously use prerendered segments under ALL conditions.