IltmmCapture::put_MasterStream

#include "ltmm.h"

C Syntax	HRESULT IltmmCapture_put_MasterStream(pCapture, newVal)
C++ Syntax	HRESULT put_MasterStream(newVal)

IltmmCapture *pCapture;	/* pointer to an interface */
long newVal;	/* value to set */

Assigns the master stream that other streams must synchronize to after the file is written out.

Parameter	Description
pCapture	Pointer to an IltmmCapture interface.
newVal	Value that is one of the ltmmCapture_MasterStream constants.

Returns

S_OK	The function was successful.
<> S_OK	An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

Different streams in the capture scenario can capture at different rates if you are using separate audio and video capture cards. By specifying a master stream that all others must synchronize to, this method adjusts the frame rate or audio sampling rate to account for drifts in the rates.

To eliminate capture drifts that can occur between audio sampling rates and video frame rates, it is recommended that you use combined audio/video cards for capture of large files.

Required DLLs and Libraries

LTMM

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64

Elements:	IltmmCapture::get_MasterStream
Topics:	Multimedia Function Group