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CSourceSeeking::SetRate (Compact 2013)

  • Artigo

3/26/2014

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

Header

dshow.h,
Streams.h

Library

ole32.lib,
Ole32auth.lib,
Strmbase.lib,
Strmiids.lib,
uuid.lib

See Also

Reference

CSourceSeeking Class
CSourceSeeking::GetRate