This data structure needs to be filled out each frame by the [UMovieGraphTimeStepBase](API\Plugins\MovieRenderPipelineCore\Graph\UMovieGraphTimeStepBase), which will eventually be passed to the renderer.
This data structure needs to be filled out each frame by the UMovieGraphTimeStepBase, which will eventually be passed to the renderer. It controls per-sample behavior such as the delta time, if this is the first/last sample for an output frame, etc.