Rendering and Compositing - Animating with Blender: How to Create Short Animations from Start to Finish - page 293

Figure 15.16 Adding an Image node and selecting the back-
ground image

Figure 15.17 RGB curves nodes for fi ne-tuning color

Figure 15.18 Alpha Over node to combine the input layers

Figure 15.19 The Vector Blur node for motion blur

● Add a Vector Blur node from the Filter menu. Connect the character input node's Z and Speed
output sockets to the Vector Blur node's input sockets (Figure 15.19).
● Add a Composite node from the Output menu so that the fi nal vector blurred image is the output. Of
course, enabling Do Composite in the Scene buttons is required so that the Composite node is used
as the fi nal result of any render commands (Figure 15.20).

When you've rendered once, you can add an Output Viewer node and enable the Backdrop option

on the Node Editor header to show the composite right in the node window. At that point, you can play
around with the RGB Curves nodes to visually balance the two input nodes for a more natural composite.

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Although this seems like a lengthy description, this is really a very simple node network and will become a
matter of a few seconds for you to create and confi gure when you have worked with the system for a few days.