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IltmmAnalogVideoDecoder::put_VCRHorizontalLocking

Summary

Sets a value that indicates whether the video is a tape source or a broadcast source.

Syntax

#include "ltmm.h"

Language	Syntax
C	HRESULT IltmmAnalogVideoDecoder_put_VCRHorizontalLocking(pAnVidDec, pVal)
C++	HRESULT put_VCRHorizontalLocking(newVal)

Parameters

IltmmAnalogVideoDecoder *pAnVidDec

Pointer to an IltmmAnalogVideoDecoder interface.

VARIANT_BOOL newVal

Value that indicates the source of the video. Possible values are:

Value	Meaning
VARIANT_FALSE	The video is from a broadcast source.
VARIANT_TRUE	The video is from a tape source.

Returns

Value	Meaning
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

Call IltmmAnalogVideoDecoder::get_VCRHorizontalLocking to retrieve the current video source type.

The timing accuracy of synchronization pulses is typically poorer from a tape source than from a broadcast source. Setting the value to VARIANT_TRUE tells the decoder to relax its standards, which provides a better chance of maintaining sync.

For more detailed information, refer to the Microsoft documentation for IAMAnalogVideoDecoder::put_VCRHorizontalLocking.

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.

Example

Language	Example
C	IltmmAnalogVideoDecoder::get_AvailableTVFormats
C++	IltmmAnalogVideoDecoder::get_AvailableTVFormats

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