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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
Minimum supported client |
Windows XP |
Minimum supported server |
Windows Server 2003 |
Header |
Wmcodecdsp.h |
See Also
MFPKEY_CONSTRAIN_ENUMERATED_VBRQUALITY
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Build date: 4/7/2010