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Help with RAM preview problem
I am running After Effects on a new Mac Pro with 12GB of memory and I have an issues when doing RAM previews. Any animation that is longer then a minute will not do a full RAM preview. I set the slider to longer RAM preview over faster rendering, but it still will not render the whole animation. It did render more but not the whole animation.
Its an SD animation and I am running CS4 on a Mac Pro. Any ideas on how to adjust the settings so that I can get this to work. I have activity monitor on so I know I am not running out of RAM, when it stops I have over 8GB or Ram that is free.
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2 Replies
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ae is only a 32-bit application and as such it can only address a maximum of 4gb of ram (3gb for a mac os foreground application). in addition, ae limits the maximum ram cache (which is used to store ram previews) to, i believe, 60% percent of that. so you actually have 1.8gb of ram to store a ram preview. (note that with cs3 and higher, ae can use more ram, up to 4gb per core, for rendering with multiprocessing enabled, just not preview storage)
to see a longer ram preview, you can:
- decrease the preview resolution by changing the quality drop down setting from ‘full’ to ‘half’ or lower. (half will increase duration by 4x)
- in the time controls panel (window>time controls), set ae to skip (1, 2 or 5) frames. you can also set this as a ‘shift+ram preview’ option for easy access. (skipping 1 frame will increase duration by 2x)
- use the ‘region of interest’ option to define a specific region of the frame to render. it’s the little rectangle icon next to the preview resolution dropdown menu.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
Ok, I guess I will have to wait on CS5 to take full advantage of my hardware.
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