Does Vegas use the pre-rendered video in the final rendering?

JohnnyRoy wrote on 12/21/2002, 7:22 PM
I know Vegas uses the pre-rendered video files when you print to tape from the timeline but I’m not sure it’s using the pre-rendered video when creating an MPEG or AVI file. The reason I say this is that I have my entire project pre-rendered yet I’ve seen it slow down *significantly* when it gets to transitions when I create an AVI file. This makes me believe its not using the pre-rendered video files. What am I doing wrong? Is there a setting somewhere that I can change?

~jr

Comments

BD wrote on 12/21/2002, 7:51 PM
Your settings are OK. If I recall correctly, the prerendered files are used when printing to tape (Shift+M), or previewing, directly from the Timeline -- but not for printing to tape from the Capture Video panel.
Tyler.Durden wrote on 12/21/2002, 8:20 PM
Hi jr,

Your assessment is bang-on. We look forward to better utilization of the prerender files in the next version.

MPH
Paul_Holmes wrote on 12/21/2002, 11:32 PM
I made the same mistake of thinking prerendering meant it wouldn't re-render a while ago, but Marty set me straight on that. Actually if you play with different settings for preview, (draft, preview, good and best, and also the right-click "Display at project size" and then prerender, you'll see it renders at those settings only. I only use it now to get quick previews of transitions to see if the flow is what I really want.
JohnnyRoy wrote on 12/22/2002, 11:50 AM
OK, just checking to make sure I wasn’t doing something wrong. So I should use pre-render when I have a section that won’t preview smoothly but its not helping otherwise. I agree this would be a great addition to VV4.

~jr
Tyler.Durden wrote on 12/22/2002, 12:09 PM
Hi jr,

Prerendering can be helpful for verifying a segment using the render-quality of the final output. It *can* reduce time if you are printing to tape from the timeline, as those prerendered segments will not render again prior to PTT.

Conversely, RAM-rendering can more quickly show you a render-required segment, but it will not recompress to DV and thus only look decent in the Vegas preview window. RAM-rendering will not reduce any render-time or PTT time, as it writes nothing to disk, and is really just for quickie-previews.

In a time-crunch, you can take a project that has lots of prerenders and print to tape and recapture with no discernable loss. That way you will not lose the prerender time you have spent, even if you intend to totally render the project to an avi.


HTH, MPH
jsteehl wrote on 12/23/2002, 9:25 AM
Wouldn't it be better to render to a new track instead of the round-trip to tape?

-Jason
jsteehl wrote on 12/23/2002, 9:26 AM
(Sorry about that!)

Wouldn't it be better to render to a new track instead of the round-trip to tape?

-Jason
Tyler.Durden wrote on 12/23/2002, 3:00 PM
>>>>Wouldn't it be better to render to a new track instead of the round-trip to tape?<<<<

If you have a lot of pre-renders, it may be much faster to print and recapture than render, since render does not curently use the pre-render segments (*everything* will render).

I just finished a 10 minute piece that took 3.5 hrs to render... to make one small fix, I dropped the rendered file onto the top track (synced-up) and split & spread where the fix was needed. Same kinda deal. Why re-render the whole enchilada when you only need to render the parts you need?

HTH, MPH