How to estimate rendering time

[Mylenium]

I am just wondering how I can calculate with the nearest perfect calculation for rendering time

You don't. It's as simple as that. Even AE does not know how long the actual processing of a frame takes unless it really gets to do it. There's just to many variables to figure in such as layer sizes, effects applied, 3D layers, motion blur etc. Your best bet is to render a short part of your clip at a position where it has the most visible layers and the most effects applied (thus making it presumably the ones to take longest to render) and use that as a reference value.

Mylenium

[suztv]

Like Mylenium said - there is no way to estimate the render time. If you are looking for speed in your render process - please refer to this post to pare-down the amount of work that AfterEffects actually has to do:

http://forums.cgsociety.org/showthread.php?t=341116

As far as estimating how long it will take to render - depends on how many effects you have applied, how much motion blur etc.. I have a video that I did for Verizon in-store kiosks that was effects heavy and was a mere 1min 45sec long and it takes on average 2 hours to render and that is on a Quad 2.5GHZ Macintosh with 4GB of RAM and a very sweet video card. So if your video is even close to being as effects laden - I would expect anywhere from 2 - 8 hours. Of course that is a WILD guess.

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