User Manual

When tracking to create smooth camera motion, ensure that the Start & End reference mode is
enabled and set the Merge mode to BG Only. It is recommended to leave the Pivot Type control
set to Tracker Average.
Using the Tracker Node
for Match Moving
A simple match moving example is shown at the beginning of this chapter, but this section
presents additional details that you may not have been aware of. Examples of match
moving include:
 A static CG element must be believably added to a moving sequence.
 Two sequences with different motions must be composited together.
Some clips may need to be stabilized so that an element from another source can be added to
the shot. After the element or effect has been composited, the stabilization should be removed
to make the shot look natural again.
Simple Match Moving
Match moving essentially applies the movement from the tracked clip to another clip. There are
two ways to perform match moving. One method involves connecting other nodes, such as
Transform or Merge, to a Tracker’s outputs. The other method is to stabilize an image by trying
to remove all motion, but instead of setting the Merge menu to BG Only, set it to FG Over BG,
FG Only, or in rare occasions, BG Over FG.
Set the Merge menu to BG Only, FG Over BG, or BG Over FG.
When using this Merge menu, you connect a foreground image to the Tracker node’s input
connection in the Node Editor.
Connect a foreground image to the Tracker’s foreground input.
Enabling the FG Only mode will apply the motion from the background to the foreground, and
the Tracker will only output the modified FG image. This result can later be merged over the
original, allowing further modifications of the foreground to be applied using other nodes
before merging the result over the background clip.
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