Optional ReadonlyselectionOptional ReadonlyframeNominal inference frame rate, and the grid step NearestFrameIndex falls
back to. With two or more indexed frames buffered the step is measured from
their own media times, so a rate that disagrees with the clip's real one
cannot walk selection off the grid.
Optional ReadonlyframeMedia timestamp for inference frame index 0.
Readonlysources
Selection strategy for matching media playback time to detection frames.