Raised by a stream sink when it completes the transition to the running state. The transition to running occurs when the IMFPresentationClock::Start method is called on the sink's presentation clock. The media sink receives the notification through its IMFClockStateSink::OnClockStart or IMFClockStateSink::OnClockRestart method.
Possible values retrieved from IMFMediaEvent::GetValue include the following.
||No event data.
|Minimum supported client
||Windows Vista [desktop apps only]
|Minimum supported server
||Windows Server 2008 [desktop apps only]