IMediaPosition::get_Duration method (control.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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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_Duration method retrieves the duration of the stream.

Syntax

HRESULT get_Duration(
  [out] REFTIME *plength
);

Parameters

[out] plength

Pointer to a variable that receives the total stream length, in seconds.

Return value

Returns an HRESULT value. Possible values include the following.

Return code	Description
S_OK	Success.
E_NOTIMPL	Not implemented.
E_POINTER	NULL pointer argument.

Remarks

This method retrieves the duration of the stream at normal playback speed. Changing the playback rate does not affect the duration.

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	control.h (include Dshow.h)
Library	Strmiids.lib

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