Greg Neumayer
Forum Replies Created
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When you render your 3D, make sure you render with a “straight” alpha, not a premultiplied one. Then, of course, when you import your matte, interpret it as a “straight” alpha.
In short, premultiplied alphas define the semi-transparent areas (your anti-aliased edges) by determining what your object would look like semi-transparent over a black background*. Straight alpha channels, which are optimal, are purely defined by a level of transparency, without “premultiplying” it to any specific color.
*The color used to premultiply the semi-transparent areas is usually adjustable to any color you want, but often defaults to black.
If you 3D software has no ability to render a straight alpha, you’ll need to try to get it to at least use a color most similar to the background you’re compositing it to in AE. For example, use blue if rendering a plane to be put in a blue sky.
Most 3D apps nowadays will render a straight alpha. For Maya, there’s a checkbox buried in the render settings called “premultiply” or something that needs to be unchecked (if I remember correctly).
Check your AE manual for more info on straight/premultiplied alpha channels.
Hope it helps.
-GregAntifreeze Design
https://www.antifreezemotiongraphics.com -
Yes! Let’s do. Then I can stop feeling like I’m losing my fine motor skills.
Oh, note that I’m using the base version of CS3, and haven’t yet upgraded to the x.x.1 version. (and I’m on X.4.9) Maybe they already fixed it for us?
-Greg.
Antifreeze Design
https://www.antifreezemotiongraphics.com -
Yeah, perhaps.
I’ll have to try that tutorial on deinterlacing slo-mo. I’m always trying to slow things down, but have yet to get great results consistently with either the built in AE fx or with ReelSmart’s Twixtor. They’re always great until that one crazed out frame that goes nuts. I guess you can’t always replicate the real thing of an over-cranked camera.-Greg.
Antifreeze Design
https://www.antifreezemotiongraphics.com -
I don’t think the previous comment will give you actual interlaced fields.
I haven’t tried it, but this might work:
Create your comp with two layers, one is your movie you want to be your lower field, the other will be the upper.
–Choose Effects>Perspective>3D Glasses
–Specify the two layers in Left view and right view, respectively.
–In the 3D view option, choose Interlace UpperL LowerR.Note that you’ll lose half of your vertical resolution, since it’s gotta go somewhere if you’re going to mash two frames into the time space of only one.
Let us know if it works. Oh, and what are you doing with it? 3D?
-Greg
Antifreeze Design
https://www.antifreezemotiongraphics.com -
I’m not sure if Mojo was proposing a work-around to a bug, or clarifying user error, but although this is certainly possible as a user error, there’s something else going on.
I haven’t tried mojo’s fix. But it’s clearly more than user error.
That said, I’m responding to both clarify that
1. Adobe shouldn’t write this off as a noobie user error.
2. The problem rectified itself when I did a Purge>All (so far), leading me to believe it has something to do with memory.Note: I haven’t yet upgraded to X.4.10 and AE 8.0.1 (I’ll do it as soon as I can get a break in projects because I’ve got OpenGL issues as it is currently)
Hope it helps,
Greg NeumayerAE CS3
OS X.4.9
Dual 2.7 G5
4.5 Gig SDRAMAntifreeze Design
https://www.antifreezemotiongraphics.com -
I just started getting the same error. Found this post because I did a search on it. Anyone from Adobe have any advice? I’ve been running CS3 for a few weeks and today it just started.
Mac OS 10.4.9
AE CS3 (8.0.0.298)
Lots of use of Trapcode Particular and Shine plug-ins-Greg
Antifreeze Design
https://www.antifreezemotiongraphics.com -
For the archive, here’s how to reverse the layer order.
In CS3 (if not v7 as well), select:
File-Scripts-DemoPalette.jsx-Reverse Layer Order-Greg
Antifreeze Design
https://www.antifreezemotiongraphics.com -
I like using
Effect/Color Correction/Leave Color
when I want to isolate a single color and leave the rest B/W.Colorama is also a good “If I could only have one effect on a desert island” tool. It works much like Photoshop’s duotones, but has the added benefit of full adjustment of the transparency on a per color basis. Just my little plug for Colorama.
-Greg
Antifreeze Design
https://www.antifreezemotiongraphics.com -
LOL. Thanks Todd.
Perhaps I wasn’t clear enough. I’m familiar with AE.
I’m looking for a script or a feature I’m missing to reorder many (50-200) layers so that I DON’T have to do it by hand.-Greg
Antifreeze Design
https://www.antifreezemotiongraphics.com -
After doing a bit more digging, I found this post by Dan E.
Works like a charm. Dan, when is your book coming to Barnes & Noble?! 🙂https://forums.creativecow.net/readpost/2/521802?&archive=T
in short, here’s the code:
L = this_comp.layer(“NullrotateElements”);// link to the layer you want to track
L.to_comp([0,0]) // offset as neededAntifreeze Design
https://www.antifreezemotiongraphics.com