Lens Effects let you use Track View to control parameters that can be animated while Video Post remains open. Any parameter with a green arrow button next to it can be animated.
When the Auto Key button is selected, the associated spinner or variable is displayed in Track View and can be animated. If it is not selected, the green button turns gray to indicate the parameter can no longer be animated.
There are two ways to set Lens Effects parameters for use in animation:
To use Track View with Lens Effects, one of the Lens Effects dialogs for a particular filter must be open when you start Track View.
When Track View is open, the Lens Effects filters you have applied are listed under Video Post on the left side of the Track View interface. Under each filter are the parameters which can be animated. These are displayed individually. You can animate only the parameters you need to.
When viewing Gradients in Track View, notice that the first two flags have only a color track associated with them. This is because they are the start and end points of the gradient and never move. Any flags created after the first two will also have a position track associated with them. This means that you can animate not only the color of any flag in any gradient, but also its position over time as well.
If you disable the animation capabilities for a particular lens flare parameter, the corresponding entry in Track View immediately disappears. For more information, see Track View.