MFPKEY_COMPLEXITYEX Property

[アーティクル]
04/12/2010

Specifies the encoder algorithm complexity.

Constant for IPropertyBag

g_wszWMVCComplexityEx

Data Type

VT_I4

Default Value

The default value depends on the version of the video encoder, as shown in the following table.

Encoder version	Default value
Windows Media Video 9 encoder	3
Windows Media Video 7/8 encoder	1

Possible Values

The possible values depend on the version of the video encoder, as shown in the following table.

Encoder version	Possible values
Windows Media Video 9 encoder	0, 1, 2, 3, 4, 5
Windows Media Video 7/8 encoder	0, 1

Remarks

Lower values cause the codec to use less complicated encoding algorithms. Although the simpler algorithms produce lower-quality output, the encoding process is faster and requires less processing power. This can be important when encoding content from a live source because the encoder must process inputs fast enough to keep up with the source.

Any value assigned to this property will be ignored if the MFPKEY_COMPRESSIONOPTIMIZATIONTYPE property is set to 1. In that case, MFPKEY_COMPLEXITYEX is automatically set to 3.

Requirements

Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008
Header	Wmcodecdsp.h

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