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Todd Kopriva
June 18, 2009 at 1:47 am in reply to: Install CS3 on a CS4 machine

Yes, installing After Effects CS4 _after_ After Effects CS3 is no problem.

Installing After Effects CS3 _after_ After Effects CS4 can cause problems.

I’m not immediately sure what to advise if you really need to install After Effects CS3 on a machine that already has After Effects CS4 on it.

If you ask this question on the Adobe user-to-user forum, then I can more easily direct the right people to help you (since we actually have some engineering folks on that forum).

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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Todd Kopriva
June 18, 2009 at 1:37 am in reply to: Keyframing masks

Yep, as Dave says, there’s an overview of rotoscoping in After Effects Help. It points to a great Creative COW training DVD by Pete O’Connell (and some other resources) for some in-depth instructions.

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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Todd Kopriva
June 17, 2009 at 3:06 pm in reply to: Can a “ram disc” allow longer ram previews?

No, not really.

Keep in mind that the disk cache (which this doohickey seems that it might add to) only applies to standard preview (aka, spacebar play).

The RAM cache (the part of RAM that RAM preview frames are stored in) is contained within the RAM allocated to the foreground process of the After Effects application. This is theoretically limited to 4GB; once you subtract the bite that the OS takes for its UI libraries and such, you’re left with about 3GB. And After Effects will only use a set percentage of that for the RAM cache (which ends up being about 2GB).

Adding more RAM to your system will not increase RAM preview length, unless you had so little RAM that you weren’t able to give that 3+ GB to the foreground application.

Adding more RAM to your system _will_ make it so that you can use the Render Multiple Frames Simultaneously multiprocessing feature without starving your processor cores of RAM.

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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Todd Kopriva
June 17, 2009 at 3:02 pm in reply to: copy mask path to new shape layer

Make sure that you’re copying and pasting by selecting respective path properties, not a higher-level property group.

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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Todd Kopriva
June 17, 2009 at 3:31 am in reply to: 3D precomposed layers will not intersect if the camera is too far away

Don’t hesitate to send bug reports to aebugs@adobe.com.

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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Todd Kopriva
June 16, 2009 at 5:13 pm in reply to: glitches when rendering

I’m not seeing any glitches on any frame. I do see glitches on playback, but I attribute that to the latency of the player/decoder, not the rendered output. Do you have any stills that show glitches?

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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Todd Kopriva
June 16, 2009 at 4:24 pm in reply to: re: Blending modes

Yeah, as Brian says, Unmult (or a similar effect) is good for turning black areas to transparency. This is good for creating items with an alpha channel for use in another application. But the blending modes are still a good (I’d say usually superior) way of compositing _within_ After Effects. It all depends on what you’re doing.

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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Todd Kopriva
June 16, 2009 at 1:54 pm in reply to: fluorescent lights

The Color Stabilizer effect can help with this.

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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Todd Kopriva
June 16, 2009 at 1:44 pm in reply to: 16 bits DPX from Phantom HD

Did you update to After Effects 9.0.2?

Here’s a line from the list of things fixed in this version:
“Cannot open DPX file that can be opened in Photoshop CS4; file converted from Phantom .cine to DPX using Glue Tools.”

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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Todd Kopriva
June 16, 2009 at 1:30 pm in reply to: picture jumps during the horizontal pan

It sounds to me like the problem might be either the video player (QuickTime Player?) our your hard disk struggling to keep up with playback. If you’ve used a codec that requires a lot of processing power to decode, then you can see stuttery playback on a computer of even moderate power. The same goes for high-data-rate movies played from a hard disk that isn’t quite fast enough.

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Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
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