IMFVideoDisplayControl::SetAspectRatioMode method (evr.h)
[The component described on this page, Enhanced Video Renderer, is a legacy feature. It has been superseded by the Simple Video Renderer (SVR) exposed through the MediaPlayer and IMFMediaEngine components. To play video content you should send data into one of these components and allow them to instantiate the new video renderer. These components have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer or the lower level IMFMediaEngine APIs to play video media in Windows instead of the EVR, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Specifies how the enhanced video renderer (EVR) handles the aspect ratio of the source video.
Syntax
HRESULT SetAspectRatioMode(
[in] DWORD dwAspectRatioMode
);
Parameters
[in] dwAspectRatioMode
Bitwise OR of one or more flags from the MFVideoAspectRatioMode enumeration.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
Invalid flags. |
|
The video renderer has been shut down. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Target Platform | Windows |
| Header | evr.h |
| Library | Strmiids.lib |