Using the hotkeys in After Effects is a great way to work, you end up working a lot quicker and you look oh so cool when you bust off some keyboard magic. Now these 5 aren’t the basic hotkeys like hitting “o” to expose a layers opacity property or “r” for ration. Nope these are a tad more advanced, you might not have used them before or perhaps you’ve forgotten about them. I work on a mac so I’m sorry if these don’t transfer to the windows environment perfectly but you should be able to figure them out.
Fit To Composition
Option+Command+F
This hotkey will scale the layer to fit to the size of the composition. This works great for when you need to scale an oversized image or pre-comps. I use this one a lot when I need to take a high definition pre-comp and render it out to standard definition.
Jump To Key Frame
Press j and k to go back and forth by a keyframe at a time. This is a pretty simple one but really useful.
Toggle Mask On / Off
Shift+Command+H
This is very handy when doing rotoscoping, sometimes you want to see how the footage is looking without that annoying mask getting in the way.
Swapping Footage
There are two ways to do this and it is a really personal thing because people I have worked with over the years have done it both ways. The way I usually do it is by clicking on the new clip, image or comp in the project window and then clicking the layer I’m going to replace in the timeline and pressing Option+Command+/ . The other way is to select a layer in your timeline. Then grab a clip, image or comp in the project window and while holding down the option key drag it to the comp window and drop it. All parameters of the previous item will still be there including effects and keyframes.
Go Full-Screen
Command+\
It is great to take advantage of all the screen real estate you can when working in After Effects. Instead of manually resizing the window which is a pain, you can just press Command+\ . This then resizes the application window or floating window to fit the screen.
For even more After Effects shortcuts check out the forum on mograph.net called The ever growing AE shortcut keys & tips thread!