MFPKEY_VBRENABLED Property

Specifies whether the encoder uses variable-bit-rate (VBR) encoding. Read-write.

Constant for IPropertyBag

g_wszWMVCVBREnabled, g_wszWMCPAudioVBRSupported

Data Type

VT_BOOL

Default Value

VARIANT_FALSE

Remarks

This value must be set to VARIANT_TRUE for any of the other VBR properties to be used by the codec.

After you set this value to VARIANT_TRUE on the audio encoder, the output types retrieved by using the IMediaObject::GetOutputType method are VBR types.

Requirements

Requirement Value
Minimum supported client
Windows XP [desktop apps only]
Minimum supported server
Windows Server 2003 [desktop apps only]
Header
Wmcodecdsp.h

See also

MFPKEY_CONSTRAIN_ENUMERATED_VBRQUALITY

MFPKEY_DESIRED_VBRQUALITY

Media Foundation Properties