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IVMRWindowlessControl::GetMaxIdealVideoSize method (strmif.h)

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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The GetMaxIdealVideoSize method retrieves the maximum video size that the VMR can display without incurring significant performance or image quality degradation.

Syntax

HRESULT GetMaxIdealVideoSize(
  [out] LONG *lpWidth,
  [out] LONG *lpHeight
);

Parameters

[out] lpWidth

Pointer that receives the maximum ideal width.

[out] lpHeight

Pointer that receives the maximum ideal height.

Return value

If the method succeeds, it returns S_OK. If it fails, it returns an error code.

Return code Description
VFW_E_WRONG_STATE
 The VMR is not in windowless mode.

Requirements

Requirement Value
Minimum supported client Windows XP with SP1 [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IVMRWindowlessControl Interface

IVMRWindowlessControl::GetMinIdealVideoSize

Using the Video Mixing Renderer