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The AVIStreamPrevKeyFrame macro locates the key frame that precedes a specified position in a stream.
AVIStreamPrevKeyFrame(
pavi,
lPos
);
Parameters
pavi
Handle to an open stream.
lPos
Starting position to search in the stream.
Return Values
Returns the position of the key frame if successful or - 1 otherwise.
Remarks
The search performed by this macro does not include the frame at the specified position.
The AVIStreamPrevKeyFrame macro is defined as follows:
#define AVIStreamPrevKeyFrame(pavi, lPos) \
AVIStreamFindSample(pavi, lPos - 1, FIND_PREV | FIND_KEY)
Requirements
** Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
** Windows 95/98/Me:** Included in Windows 95 and later.
** Header:** Declared in Vfw.h.
See Also