rendering equals loss of quality?

[Sebastian Riezler]

a guy from our avid support once told me that if you render out a stack of vertical effects (more than one effect laying above each other; on V1, V2 aso.) you will have a loss of qualitiy. but he didn’t say if you can see it with your eyes or if you just can measure it.
anyway, he also told me if i have a stack of vertical effects i should make a subsequence of this effect (for further changes if necessary) and then use the collapse effect. this should do the trick.

rock on
Riot

[Michael Hancock]

I assume you mean if you have a vertical set of effects and you render all of them. If you do this you likely will have a loss of quality because you’ll be rendering V1, then rendering V2 which will rerender V1, then V3 will render which will rerender V2 and V1, etc…

From what I understand Avid works top down. If you have 4 tracks with effects you only need to render the top track, provided it completely covers all tracks below it. If it doesn’t you’ll have to render some of the tracks below. Do an expert render and you’ll see. If you have 8 tracks with effects and put a letterbox that covers the entire sequence on V9 you can render V9 only and be done. It will include all other effects below it.

If you select all track and collapse them what you’re essentially doing is adding one effect that covers all effects below it. This means Avid will render only that one effect–a submaster effect–and will include in its calculations all effects below.

I prefer to leave my tracks uncollapsed because it’s a lot easier to make changes. However, if I do collapse, I always duplicate the sequence first so I have a worker sequence and final sequence. Then I can make changes, select all, copy to clipboard, step into my final sequence submaster, overwrite, step out, render and take a break. Sounds like a lot but it’s really only a few keystrokes and I’m done.

Mike.

Oh yeah, render in High Quality if you have time to kill. It will ensure the best quality possible but takes significantly longer.

[Grinner Hester]

Not is you select 1:1 in your media creation settings for renders.