Anteckning
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The AVIStreamGetFrameOpen function prepares to decompress video frames from the specified video stream.
Syntax
PGETFRAME AVIStreamGetFrameOpen(
PAVISTREAM pavi,
LPBITMAPINFOHEADER lpbiWanted
);
Parameters
pavi
Pointer to the video stream used as the video source.
lpbiWanted
Pointer to a structure that defines the desired video format. Specify NULL to use a default format. You can also specify AVIGETFRAMEF_BESTDISPLAYFMT to decode the frames to the best format for your display.
Return value
Returns a GetFrame object that can be used with the AVIStreamGetFrame function. If the system cannot find a decompressor that can decompress the stream to the given format, or to any RGB format, the function returns NULL.
The argument pavi is a pointer to an IAVIStream interface.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | vfw.h |
| Library | Vfw32.lib |
| DLL | Avifil32.dll |