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From the Options menu, choose Preferences and select the Video tab.
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Enter a value in the Dynamic RAM preview (max) box to set the amount of RAM that you want to dedicate to video previews.
The maximum size of the RAM cache is displayed to the right of the control. You must leave at least 64 megabytes available for (more if you are creating complex projects). If you reserve excessive amounts of RAM for your RAM cache, performance may decrease.
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Click OK.
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Select the region that contains the frames you want to cache.
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From the Tools menu, choose Build Dynamic RAM Preview (or press Shift+B). Each frame in the selection is rendered.
Click anywhere in the timeline to cancel.
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After rendering is finished, click Play
. The cached video will play back at the frame rate specified on the Video tab of the Project Properties dialog.
If your RAM cache is not large enough to contain the entire selection, the selection is automatically adjusted to include only the cached region. You can increase the Dynamic RAM Preview max setting on the Video tab of the Preferences dialog to increase the size of the cache.
To clear the RAM cache during playback, you can resize the Video Preview window or choose a new setting from the Video Preview Quality drop-down list.
To turn off dynamic RAM previewing, enter 0 in the Dynamic RAM preview (max) box on the Video tab of the Preferences dialog.
Using Dynamic RAM Previews |
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When your project includes compositing and complex video effects, you may not be able to preview your project at its full frame rate. If you prefer not to prerender your project, you can dedicate a portion of your RAM to cache video frames that cannot be rendered in real time.
What do you want to do?
Set up your cache
Build the preview from a selection
Clear the cache or turn off dynamic RAM previewing
