MFCreateVideoMixer callback function (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 It has been superseded by the Simple Video Renderer (SVR) exposed through the MediaPlayer and IMFMediaEngine components.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.]
Creates the default video mixer for the enhanced video renderer (EVR).
Syntax
MFCreateVideoMixer Mfcreatevideomixer;
EVRPUBLIC Mfcreatevideomixer(
IUnknown *pOwner,
REFIID riidDevice,
REFIID riid,
void **ppv
)
{...}
Parameters
pOwner
Pointer to the owner of this object. If the object is aggregated, pass a pointer to the aggregating object's IUnknown interface. Otherwise, set this parameter to NULL.
riidDevice
Interface identifier (IID) of the video device interface that will be used for processing the video. Currently the only supported value is IID_IDirect3DDevice9.
riid
IID of the requested interface on the video mixer. The video mixer exposes the IMFTransform interface.
ppv
Receives a pointer to the requested interface. The caller must release the interface.
Return value
The function returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The function succeeded. |
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 |