icm-getdefaultkeyframerate.md

title	description	ms.assetid	keywords	topic_type	api_name	api_location	api_type	ms.topic	ms.date
ICM_GETDEFAULTKEYFRAMERATE message (Vfw.h)	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 ICGetDefaulteyFrameRate macro.	2ebe37cc-3ec2-4b52-bd8f-71c44b704647	ICM_GETDEFAULTKEYFRAMERATE message Windows Multimedia	apiref	ICM_GETDEFAULTKEYFRAMERATE	Vfw.h	HeaderDef	reference	05/31/2018

ICM_GETDEFAULTKEYFRAMERATE message

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 ICGetDefaulteyFrameRate macro.

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

Parameters

dwICValue

Address to contain the preferred key-frame spacing.

Return Value

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

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Vfw.h

See also

Video Compression Manager

Video Compression Messages