As mentioned above, an animation in VR can include the following visualization elements:

Volume scale and position
Current timepoint (for time series)
Clipping planes/volume positions and appearance
Rendering mode
Opacity settings
Object visibility

But does not include:

Manual object creation or editing steps
Surface transformations
User interface elements (menus, controllers, environment)

Bear this in mind when recording an animation. If your movie should include the element not included in animations as mentioned above you should consider screen recording instead. Note that if you use screen recording software, you can switch to full-screen mode by pressing F11 on the keyboard. Pressing F11 again will also switch back out of full-screen.

Here is an example of a video captured using screen recording software:

Video: Record VR Story (pt. 1)

And here is the animation we created above exported as a movie:

Video: Record VR Story (pt. 2)

Example Recording