Indicates whether the time values used by the host application are relative or absolute.
- FxPlug 3.1+
The time base.
If this method returns
Fx, then times are absolute frame numbers, where 0 is the start of the timeline. If it returns
Fx, then times are "clip-relative," meaning that 0 is the start of the "clip."
For generators and transitions, the clip is the effect itself. For filters, the clip is the video item to which the filter is applied.