Compartilhar via

IAMVideoCompression::put_KeyFrameRate

  • Artigo
 
Microsoft DirectShow 9.0

IAMVideoCompression::put_KeyFrameRate

The put_KeyFrameRate method sets the key-frame rate.

Syntax

  HRESULT put_KeyFrameRate(
  long KeyFrameRate
);

Parameters

KeyFrameRate

[in] Desired key-frame rate. If the value is negative, the filter will use the default key-frame rate. If the value is zero, only the first frame will be a key frame.

Return Values

Returns an HRESULT value.

Remarks

To determine if the filter supports this method, call the IAMVideoCompression::GetInfo method and check for the CompressionCaps_CanKeyFrame flag in the pCapabilities parameter. The GetInfo method also returns the default key-frame rate.

Requirements

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

Library: Use Strmiids.lib.

See Also