render vs nesting

CTJ wrote on 9/14/2005, 9:06 AM

Let's say you are working on two projects...you have 2 veg files. You open one and now get ready to work on the 2nd veg file - does it matter, e.g. should you render your 2nd project to a format to bring into veg #1or bring it in nested? Reason for my questioning - will I lose quality on either level.

Comments

krhodes wrote on 9/14/2005, 9:33 AM

I just finished a project where I had created an animation using stills (png) from photoshop and used vegas to move them around (using pan & crop on the event & track level) -

instead of rendering our the sequence I just nested the veg file - was able to cut it out and stretch where needed and didnt seem to have any loss at all

I was really blown away since this is the first time I have used the nested project on something so labor intensive as I had the movement on the animation

JohnnyRoy wrote on 9/14/2005, 11:15 AM

> Reason for my questioning - will I lose quality on either level.

Yes, you could loose quality by NOT nesting them because you are incurring an additional render step when you make the AVI file. The nested project will be rendered at full quality for your final render and so it will incur one less processing step than if you rendered it to AVI and brought it back in.

The difference would probably only be seen in generated media and other media that was created in 4:4:4 color space and then final rendered to DVD MPEG2 at 4:2:0. If all of your media is DV source, you will not see any difference in quality (i.e., the difference is imperceptible). Also if your final format is DV tape there will be no difference because it will all be 4:1:1 eventually on the tape. So your final output plays a part in any quality loss as well.

~jr

CTJ wrote on 9/14/2005, 11:25 AM

kewl...

douglas_clark wrote on 9/24/2005, 6:14 AM

Does it matter what the project properties are for a nested project?

If the framerate and/or resolution of the nested project were different (lower) than the master project, would that make any difference?