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Retrieves the preferred time format to be used by the interface.
HRESULT QueryPreferredFormat( GUID * pFormat );
Parameters
- pFormat
- Time format preferred by the interface.
Return Values
Returns the HRESULTvalue returned from calling IMediaSeeking::QueryPreferredFormaton the connected pin.
Remarks
This member function implements the IMediaSeeking::QueryPreferredFormatmethod by calling this same method on the upstream filter's output pin.
See the description for IMediaSeeking::IsFormatSupportedfor a list of available time formats. If the time format returned is not satisfactory, use the IMediaSeeking::IsFormatSupportedmethod to query for supported time formats that you can use.