IQualProp interface

The IQualProp interface provides methods for retrieving performance information from video renderers. The values returned through the interface are reset each time the filter is stopped. The Video Renderer filter and the Full Screen Renderer filter expose this interface.

Applications can use this interface to retrieve video performance information.

Members

The IQualProp interface inherits from the IUnknown interface. IQualProp also has these types of members:

Methods

The IQualProp interface has these methods.

MethodDescription
get_AvgFrameRate

Retrieves the average frame rate achieved.

get_AvgSyncOffset

Retrieves the average time difference between when a frame was due for rendering and when rendering actually began (this is returned as a value in milliseconds).

get_DevSyncOffset

Retrieves the average time difference between when a frame was due for rendering and when rendering actually began (this is returned as a standard deviation).

get_FramesDrawn

Retrieves the number of frames drawn since streaming started.

get_FramesDroppedInRenderer

Retrieves the number of frames dropped by the renderer.

get_Jitter

Gets the jitter (variation in time) between successive frames delivered to the video renderer

 

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Amvideo.h (include Dshow.h)

Library

Strmiids.lib

See also

Interfaces

 

 

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