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ICM_GETDEFAULTKEYFRAMERATE

  • Article

The ICM_GETDEFAULTKEYFRAMERATE message queries a video compression driver for its default (or preferred) key-frame spacing. You can send this message explicitly or by using the ICGetDefaultKeyFrameRate macro.

ICM_GETDEFAULTKEYFRAMERATE 
wParam = (DWORD) (LPVOID) &dwICValue; 
lParam = 0;

Parameters

dwICValue

Address to contain the preferred key-frame spacing.

Return Values

Returns ICERR_OK if the driver supports this message or ICERR_UNSUPPORTED otherwise.

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

Video Compression Manager, Video Compression Messages, ICGetDefaultKeyFrameRate