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The SetMaxKeyFrameSpacing method specifies the maximum interval between key frames.
Syntax
HRESULT SetMaxKeyFrameSpacing(
LONGLONG llTime
);
Parameters
llTime
[in] Specifies the maximum key frame spacing in 100-nanosecond units.
Return Values
This method always returns S_OK.
Remarks
A key frame is a video frame that is streamed without any information being required from any previous frame. A delta frame is a frame that is dependent on a previous frame. You can seek to a key frame, but not to a delta frame.
A LONGLONG is defined as a 64-bit signed integer (the same size as a QWORD, except that it is signed). This type is only used to maintain full compatibility with the WM_MEDIA_TYPE structure.
A nanosecond is one-millionth of a millisecond.
See Also
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