The portion of the file holding the video data. The video data might be compressed to save disk space. The data has to be decompressed using a video decompressor before you can play (see) it.

Also known as a decoder, this is a module or algorithm to decompress data.

ILMVFrameRateCtrl Interface

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This is the interface for the LEAD Video Frame Rate Controller Filter.

Interface Properties:

Type	Name	Description
VARIANT_BOOL	Enable	Set to VARIANT_TRUE to enable the filter. If set to VARIANT_FALSE, the filter will pass the video stream as is, without changing the frame rate.
double	FrameRate	Sets or gets the desired output frame rate, in frames per second.
double	InputFrameRate	(Read only) The input (original) frame rate, in frames per second.
VARIANT_BOOL	ChangeStreamLength	If set to VARIANT_TRUE, the filter will change the duration of the video stream by changing the frame rate as follows: Actual output rate = Selected rate * (Selected rate / Input rate). The video will play slower or faster according to the selected rate. If set to VARIANT_FALSE, the video plays at the normal speed and only the frame rate is changed.

Interface Methods:

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HRESULT ResetToDefaults()

Description:

Resets the filter properties to their default values. Calling this method might cause the filter to reconnect its output pin.

Comments:

The method will fail if the filter is in the running state.

Returns:

S_OK	Success
VFW_E_WRONG_STATE	The filter is in the wrong state.