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IAMVideoControl::GetCurrentActualFrameRate

  • Articolo
 
Microsoft DirectShow 9.0

IAMVideoControl::GetCurrentActualFrameRate

The GetCurrentActualFrameRate method retrieves the actual frame rate, expressed as a frame duration in 100-nanosecond units. USB (Universal Serial Bus) and IEEE 1394 cameras may provide lower frame rates than requested because of bandwidth availability. This is only available during video streaming.

Syntax

  HRESULT GetCurrentActualFrameRate (
  IPin *pPin,
  LONGLONG *ActualFrameRate
);

Parameters

pPin

[in] Pointer to the pin to retrieve the frame rate from.

ActualFrameRate

[out] Pointer to the frame rate in frame duration in 100-nanosecond units.

Return Values

Returns an HRESULT value that depends on the implementation of the interface.

Requirements

Header: Declared in Strmif.h; include Dshow.h.

Library: Use Strmiids.lib.

See Also