IAMTVTuner::get_VideoFrequency method (strmif.h)

Article
02/22/2024

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 get_VideoFrequency method retrieves the current video frequency.

Syntax

HRESULT get_VideoFrequency(
  [out] long *lFreq
);

Parameters

[out] lFreq

Pointer to a variable that receives the video frequency, in hertz (Hz).

Return value

Returns an HRESULT value that depends on the implementation of the interface.

Remarks

This is a diagnostic method that enables you to examine the exact frequency being used for a given channel.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	strmif.h (include Dshow.h)
Library	Strmiids.lib