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IGetFrame::Begin
The Begin method prepares to extract and decompress copies of frames from a stream.
Called when an application uses the AVIStreamGetFrameOpen function.
HRESULT Begin(
PAVISTREAM ps,
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| LONG lStart,
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| LONG lEnd,
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| LONG lRate
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| );
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Parameters
ps
Address of the interface to a stream.
lStart
Starting frame for extracting and decompressing.
lEnd
Ending frame for extracting and decompressing.
lRate
Speed at which the file is read relative to its normal playback rate. Normal
speed is 1000. Larger values indicate faster speeds; smaller values indicate
slower speeds.
Return Values
Returns the HRESULT defined by OLE.
Remarks
For handlers written in C++, Begin has the following syntax:
HRESULT Begin(LONG lStart, LONG lEnd, LONG lRate);
See Also
AVIStreamGetFrameOpen
Related Links
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