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IMediaPosition::put_Rate

  • Article

Sets the rate of playback relative to normal speed.

HRESULT put_Rate(
double dRate);

Parameters

  • dRate
    [in] Rate to set.

Return Values

Returns an HRESULT value.

Remarks

This method allows an application to speed up or slow down playback relative to the normal default playback speed. A rate of 1.0 indicates 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.

 Last updated on Tuesday, July 13, 2004

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