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mrwizzer

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Brief RAM Previews in After Effects CS3

I've got a recent Mac Pro with 6GB of memory running After Effects CS3, but my Ram previews are quite brief.

In one sequence, I managed to get about ten seconds of Ram preview.  But when I duplicated that sequence and made a minor tweak, then tried to Ram Preview it, I only got half a second's worth of preview.  

It seems odd that it's not using up the memory that was used in the earlier sequence and allocating it to the newer sequence, (the green bar still shows ten seconds worth of preview time on the older sequence).

What am I doing wrong?

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mrwizzer

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Side note:  I'm also getting the following error message:

After Effects error:  unable to allocate space for a 1400 x 900 image buffer.  you may be experiencing fragmentation.  In the Memory & Cache Preferences dialog box, try decreasing the Maximum RAM cachce size value and selecting the Enable Disk Cache option, increasing Maximum Memory Usage, or both.
Avatar of Merete
Have you seen this one
After Effects error: unable to allocate space for a 1440 x 1080 image buffer.

http://forums.creativecow.net/thread/2/924799
Yes, but thanks for pointing that out.

I've found that by disconnecting the 32" LCD Television that I've been monitoring on lately, the errors seem to have gone away.

I'm wondering if I need a new graphics card to be able to push video to both my Apple Cinema monitor AND a 32" LCD TV via the displayport output.   It's a brand new Mac Pro, I wouldn't have thought I'd have needed more horsepower than what I've got.  But maybe I'm wrong?
Yes that is very possible, the TV uses a diiferent Hz refresh rate than computer monitors > Apple Cinema monitor
The best Monitors these days are all LED so there's really no need to use a LCD TV
I dont believe the video card is the problem here
but rather using the LCD TV with your Apple Cinema Monitor, I don't have a great deal experience with Apple Mac, but do know something of the requirements for running 2 displays from one card,
Are you using  HDMI to DVI cable?
you say>32" LCD TV via the displayport output.
May explain the error
unable to allocate space for a 1400 x 900 image buffer<<
Here's a couple of testamonials using this setup
quote
The iMac can support external displays up to the resolution of 1920x1200 this includes all LCD TV's and others alike but not any 30" computer monitor such as the Apple Cinema displays.
http://forums.whirlpool.net.au/archive/1015476
http://discussions.info.apple.com/message.jspa?messageID=8899723

Do you get sore eyes using the LCD TV up close?
Thanks for your reponse, Merete.  

The reason I'm using the LCD TV is that I'm creating video for this specific TV, (it's part of a high-tech Halloween prop I'm creating).  

And yes, I'm using a Mini DisplayPort Male to HDMI Male 32AWG Cable - 15ft .  




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Merete
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