CPosPassThru.put_Rate method
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 put_Rate method sets the playback rate. This method implements the IMediaPosition::put_Rate method.
Syntax
HRESULT put_Rate(
double dRate
);
Parameters
-
dRate
-
Playback rate. Must not be zero.
Return value
Returns E_INVALIDARG if dRate is zero. Otherwise, returns the HRESULT value from the connected pin.
Remarks
Negative rates indicate reverse play. Not all media will support reverse play.
Requirements
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