This method sets a new playback rate.
The playback rate dRate 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.
Negative values of dRate indicate reverse playback. If the filter supports reverse playback, it should return AM_SEEKING_CanPlayBackwards from IMediaSeeking::GetCapabilities. If a filter does not return AM_SEEKING_CanPlayBackwards, a negative rate will cause SetRate to fail with a return value of E_INVALIDARG.
|Windows Embedded CE||Windows CE 2.12 and later|
|Windows Mobile||Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later|
|Note||Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements|
For more information, see Setting Up the Build Environment, Version 2.12 requires DXPAK 1.0 or later