VMRVIDEOSTREAMINFO structure (strmif.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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
This topic applies to Windows XP or later.
The VMRVIDEOSTREAMINFO structure is used in the VMR-7 filter's call to IVMRImageCompositor::CompositeImage on the image compositor.
Syntax
typedef struct _VMRVIDEOSTREAMINFO {
LPDIRECTDRAWSURFACE7 pddsVideoSurface;
DWORD dwWidth;
DWORD dwHeight;
DWORD dwStrmID;
FLOAT fAlpha;
DDCOLORKEY ddClrKey;
NORMALIZEDRECT rNormal;
} VMRVIDEOSTREAMINFO;
Members
pddsVideoSurface
Specifies the DirectDraw surface that contains the video to be composited.
dwWidth
Specifies the width of the video rectangle.
dwHeight
Specifies the height of the video rectangle.
dwStrmID
Specifies the input stream. This value corresponds to the input pin.
fAlpha
Specifies the alpha value for this stream. (Not per-pixel alpha.)
ddClrKey
Specifies the source color key value or -1 if color keying is not to be used for this stream.
rNormal
Specifies the position of the image in composition space.
Requirements
| Requirement | Value |
|---|---|
| Header | strmif.h (include Dshow.h) |