This video tutorial goes through the steps to create a subtle animation from a single rendered image in VRay for Rhino. This technique can save lots of time by not having to render out multiple frames of an animation. The key steps in this video can be found below:
00:00 - Introduction
00:54 - Setting up and adding render elements
01:30 - ZDepth Render Element
04:15 - Light Mix Render Element
06:40 - Rendering out a still image - render settings
09:30 - Importing the image into After Effects
10:48 - Adding an animated zoom to the base image
12:25 - Animating the lighting in the scene
18:05 - Adding a new background to the animation
20:56 - Changing colour and tone of the background layer
22:20 - Adding fog using the ZDepth render element
24:39 - Adding a rainfall effect