Barend Onneweer
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And lowering the actual amount of temporal filtering. I’ve seen echo-resembling side-effects from temporal filtering. That’s just how it works. Averaging frames over time – probably with some algorithms in there doing something smart.
Bar3nd
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Not that I know of, but it’s been a while since I investigated this.
An anti-aliased depth-channel doesn’t always look good either, but it can be achieved by rendering out a separate pass where you assign a white shader to the entire scene, and add black volumetric fog.
There’s a Depth Shader for Maya at:
https://www.highend3d.com/maya/downloads/plugins/rendering/misc/1318.htmlBut often an anti-aliased depth-channel may cause it’s own strange edge artefacts…
Bar3nd
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This is a problem that often shows up. Depth-mattes or Z-mattes aren’t anti-aliased, causing the jagged edges.
I usually end up rendering and posting at twice the resolution and then downscaling – to remove the jaggies…
Or rendering in multiple layers and applying separate lensblurs.
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Are you outputting to an SD monitor? The downconversion from HD to SD isn’t always realtime.
Bar3nd
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Usually setting your project bit-depth to 16-bit will help (if the gradients are created in AE that is…). Even when rendering to 10 or 8 bits in the end, AE adds a little dither to avoid banding.
The alternative is to add a tiny bit of monochromatic noise to layers that cause banding.
Bar3nd
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We seriously need to make this thread a sticky. There’s a wealth of unique information in here 🙂
Bar3nd
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[Dave LaRonde] “THAT oughta do it!”
Dave is clearly having a good day today 🙂 Admit it Dave, you’re loving this stuff!
Now let’s see, if I can make this 2k filmscan stuff look like DV…
Bar3nd
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Grain Surgery was acquired by Adobe and is now included in the Pro Version of AE: Match Grain, Remove Grain and Add Grain.
Works quite well, although processor intensive.
Bar3nd
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Are you only seeing the stairstepping in After Effects?
Are you seeing it immediately or only after keying?
And finally: is the source footage NTSC sized?
Why on earth would you shoot NTSC on an HVX200 if you are going to try chromakeying? The extra resolution in 1080p helps a lot in getting a good key, and if the final delivery format is NTSC, pulling mattes from HD sources (even if they’re compressed to DVCProHD) will give excellent results…
Bar3nd
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