IVMRAspectRatioControl9::SetAspectRatioMode method (vmr9.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 SetAspectRatioMode method specifies whether the VMR preserves the aspect ratio of the source video.
Syntax
HRESULT SetAspectRatioMode(
[in] DWORD dwARMode
);
Parameters
[in] dwARMode
Specifies a member of the VMR_ASPECT_RATIO_MODE enumeration type.
Return value
Returns an HRESULT value. Possible values include the following.
| Return code | Description |
|---|---|
|
Invalid argument |
|
Success |
Requirements
| Minimum supported client | Windows XP with SP2 [desktop apps only] |
| Minimum supported server | Windows Server 2003 R2 [desktop apps only] |
| Target Platform | Windows |
| Header | vmr9.h |
| Library | Strmiids.lib |