IVideoFrameStep interface

The IVideoFrameStep interface steps through a video stream. This interface enables Microsoft® DirectShow® applications, including DVD players, to step through a video stream as slowly as one frame at a time. Obtain the interface through the filter graph manager, which controls the frame stepping process in conjunction with the Overlay Mixer Filter or the Video Renderer Filter. Backward frame stepping is not supported.

Note   For frame stepping to work with a hardware decoder, the decoder must support the Frame Stepping Property Set.
 

Members

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

Methods

The IVideoFrameStep interface has these methods.

MethodDescription
CancelStep

Cancels the previous step operation.

CanStep

Determines the stepping capabilities of the specified filter.

Step

Causes the filter graph to step forward by the specified number of frames.

 

Requirements

Minimum supported client

Windows XP [desktop apps only]

Minimum supported server

Windows Server 2003 [desktop apps only]

Header

Strmif.h (include Dshow.h)

Library

Strmiids.lib

 

 

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