IMVSCQualityProperties

The IMVSCQualityProperties Interface from the MontiVision Smart Control  provides methods to get some information of the video stream processing. This interface based on the IQualProp DirectShow interface. 

Attention: Before you could use this interface you have to set the video renderer. Call the IMVSCVideoWindow::SetVideoRenderer() method or set the IMVSCVideoWindow::RendererFilter property with the label of the video renderer. A good playe for this is after loading the filter graph configuration (MVP-file).

Methods:

Typelib: MV SmartControl

Property IMVSCQualityProperties::AverageFrameRate

Declaration: Property Get AverageFrameRate As Long

Get the average frame rate achieved. The value is multiplied with 100. For example a frame rate of 10 frames per seconds results a value of 1000.

Prototype:

HRESULT get_AverageFrameRate(LONG*);

Property IMVSCQualityProperties::AverageSyncOffset

Declaration: Property Get AverageSyncOffset As Long

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).

Prototype:

HRESULT get_AverageSyncOffset(LONG*);

Property IMVSCQualityProperties::DroppedFramesCount

Declaration: Property Get DroppedFramesCount As Long

Retrieves the number of frames dropped by the renderer.

Prototype:

HRESULT get_DroppedFramesCount(LONG*);

Property IMVSCQualityProperties::FrameCount

Declaration: Property Get FrameCount As Long

Get the number of frames rendered since streaming began.  

Prototype:

HRESULT get_FrameCount(LONG*);

Property IMVSCQualityProperties::Jitter

Declaration: Property Get Jitter As Long

Expresses the average time in milliseconds between successive frames delivered to the video renderer.

Prototype:

HRESULT get_Jitter(LONG*);