Set the Reference Clock
If a filter can provide a reference clock, a clock icon appears inside the filter:
If the filter graph manager is using this clock as the filter graph's reference clock, the clock icon is yellow. Otherwise, the icon is gray.
By default, the filter graph manager selects the reference clock. You can select another reference clock, as follows:
- Right-click the filter.
- On the pop-up menu that appears, click Select Clock.
You can enable or disable the reference clock. On the Graph menu, click Use Clock. A check mark next to this menu item means that the reference clock is enabled. Otherwise, the reference clock is disabled. With no reference clock, samples are rendered as soon as they arrive at the renderer filter.
Note You cannot set the reference clock unless the graph is stopped. For more information, see Run, Pause, or Stop a Filter Graph.