CSourceSeeking::SetRate
A version of this page is also available for
4/8/2010
Sets a new playback rate.
Syntax
HRESULT SetRate(
double dRate
);
Parameters
dRate
New rate, where 1.0 is the normal playback speed.Specifying 2.0 causes playback at twice the normal rate: a video created for 10 frames per second (fps) will be played back at 20 fps, if resources permit.
Audio streams played back at above-normal speed increase the pitch rather than drop samples.
A rate of 0.5 specifies half speed.
Return Value
Returns the HRESULT value returned by the call to the CSourceSeeking::ChangeRate function.
Remarks
You must implement ChangeRate to use this method. The m_dRateSeeking data member is set to the new rate. Setting the rate to zero causes an error.
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | 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 |