|Microsoft DirectX 9.0|
The put_Rate method sets the playback rate.
HRESULT put_Rate( double dRate );
[in] Playback rate. Must not be zero.
Returns an HRESULT value. Possible values include the following.
The playback rate is expressed as a ratio of the normal speed. Thus, 1.0 is normal playback speed, 0.5 is half speed, and 2.0 is twice speed. For audio streams, changing the rate also changes the pitch.
For more information, see the remarks in IMediaSeeking::SetRate.