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Re: Slow Render + Enormous File Size with Keylight

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Andrew Somers
Re: Slow Render + Enormous File Size with Keylight
on Aug 30, 2018 at 3:24:11 pm

Hi Alex,

Well this works out to be 6.6 seconds a frame, which for a green screen key doesn't sound too out of the ordinary if you are rendering one frame at a time and you have a lot of things going on in the comp.

But you haven';t told us *anything* about your project. Resolution? Bit depth? Colorspace? Output codec? Your system setup (number of cores, RAM, AE version, drive type, source file type).

All of these things have a huge affect on the render time.

THAT SAID, in a thread last week I was talking about how the newest versions of AE have a render speed issue due to the fact that they don't render multiple frames at the same time, If you have a big multi-core computer, you might notice that when rendering using the most recent versions of AE that your total CPU load is low.

Two ways around this: 1) get rendergarden which enables rendering multiple frames at a time. OR 2) download an easier version of AE such as 2014 which allows for multi frame render.

To handle rendering multiple frames at once, your system needs many cores and tons of RAM.

Output file: What do you mean by "enormous" ??? Without knowing your resolution, frame rate, bit depth, output codec, AND the size of the file you are seeing, I can't tell you if the size is reasonable or not.

How about you tell us some specifics??

Andrew Somers
VFX & Title Supervisor

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