#include "ltmf.h"

C Syntax

HRESULT IltmfTVTuner_get_AudioSubChannel(pTV, pVal)

C++ Syntax

HRESULT get_AudioSubChannel(pVal)

IltmfTVTuner *pTV;

pointer to an interface

long *pVal;

pointer to a variable

Retrieves the current audio sub-channel.

Parameter Description
pTV Pointer to an IltmfTVTuner interface.
pVal Pointer to a variable to be updated with the current audio sub-channel. Possible values are:
  Value Meaning
  ltmfTUNER_SUBCHAN_DEFAULT The default subchannel.
  ltmfTUNER_SUBCHAN_NO_TUNE No tuning.
  Any other value The current audio sub-channel.
  This parameter is valid only for satellite broadcasts.



The function was successful.

<> S_OK

An error occurred. Refer to the Error Codes or the HRESULT error codes in the MediaFoundation documentation.


For a list of frequencies for channels, refer to the Microsoft Documentation International Analog TV Tuning at

For more detailed information, refer to the Microsoft Documentation for IAMTVTuner::get_Channel at

Required DLLs and Libraries


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


Win32, x64

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