IMFPMediaPlayer::GetNativeVideoSize method (mfplay.h)

项目
12/05/2018

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 It has been superseded by MediaPlayer and IMFMediaEngine.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

Gets the size and aspect ratio of the video. These values are computed before any scaling is done to fit the video into the destination window.

Syntax

HRESULT GetNativeVideoSize(
  [out] SIZE *pszVideo,
  [out] SIZE *pszARVideo
);

Parameters

[out] pszVideo

Receives the size of the video, in pixels. This parameter can be NULL.

[out] pszARVideo

Receives the picture aspect ratio of the video. This parameter can be NULL.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.
MF_E_INVALIDREQUEST	The current media item does not contain video.
MF_E_SHUTDOWN	The object's Shutdown method was called.

Remarks

At least one parameter must be non-NULL.

Requirements

Requirement	Value
Minimum supported client	Windows 7 [desktop apps only]
Minimum supported server	Windows Server 2008 R2 [desktop apps only]
Target Platform	Windows
Header	mfplay.h

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