IMediaPosition::get_Duration method (control.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 |
---|---|
|
Success. |
|
Not implemented. |
|
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 |