Not Realtime Help !

[Adolfo Rozenfeld]

Doumbe:

After Effects is a very different beast from a typical non linear editing system.
An editing system is designed to be played in real time, much like a music instrument. In such an application, meaning is created mainly by using time as the primary material.

After Effects, on the other hand, is designed to deal with much more complex issues in terms of processing images. And there is a price to that versatility.

Because of this, the classic Spacebar-play as you may know it in an editing application won’t do much. It will just play the timeline at whatever speed it can, which has very little usefulness in terms of evaluating your content.

In After Effects, you need to build a RAM preview before you can get to watch a segment of your composition at full frame rate.

You can invoke a RAM preview in several ways. One is by pressing the big, “super play” button on the right side of the time controls panel. A better way is just to press the 0 (zero) key in your numeric keypad.

When you do so, After Effects starts building a preview (either from the current time or the beginning of your timeline, depending on how you set time controls) and after creating such preview, you get to watch it in real time (full frame rate). This happens when you interrupt the preview which is being built, or when it reaches the end of your Comp, or when you run out of RAM memory (it’s called RAM preview for a reason!).

More info on RAM previews in the Preview video and audio of After Effects help.

Adolfo Rozenfeld · Adobe

[Barend Onneweer]

Actually, the screenshot shows that the composition is rendered to a RAM preview but the RAM preview still isn’t playing back at full fps.

The main cause for this would be the odd zoom setting (94%) which forces a re-scale of the image which isn’t realtime.

Try setting your comp view to 100%.

Bar3nd

Raamw3rk – digital storytelling and visual effects