cbasefilter-setsyncsource.md

description	ms.assetid	title	ms.topic	ms.date	topic_type	api_name	api_type	api_location	ms.custom
The SetSyncSource method sets a reference clock for the filter. This method implements the IMediaFilter::SetSyncSource method.	298039fc-dd38-4063-8752-2669b134b8ef	CBaseFilter.SetSyncSource method (Amfilter.h)	reference	4/26/2023	APIRef kbSyntax	CBaseFilter.SetSyncSource	COM	Strmbase.lib Strmbase.dll Strmbasd.lib Strmbasd.dll	UpdateFrequency5

CBaseFilter.SetSyncSource method

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The SetSyncSource method sets a reference clock for the filter. This method implements the IMediaFilter::SetSyncSource method.

Syntax

HRESULT SetSyncSource(
   IReferenceClock *pClock
);

Parameters

pClock

Pointer to the clock's IReferenceClock interface, or NULL.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirements

Requirement	Value
Header	Amfilter.h (include Streams.h)
Library	Strmbase.lib (retail builds); Strmbasd.lib (debug builds)

See also

CBaseFilter Class