MFPKEY_VBRENABLED Property

Specifies whether the codec will use variable-bit-rate (VBR) encoding.

Constant for IPropertyBag

g_wszWMVCVBREnabled, g_wszWMCPAudioVBRSupported

Data Type

VT_BOOL

Default Value

FALSE

Remarks

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

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

Applies To

This read/write property is available on the encoder of the following codecs:

• Windows Media Audio 9
• Windows Media Audio 9 Lossless
• Windows Media Audio 10 Professional
• Windows Media Audio 9 Voice
• Windows Media Video 9
• Windows Media Video 9 Advanced Profile
• Windows Media Video 9 Screen
• Windows Media Video 9.1 Image

Requirements

Client: Requires Windows Vista or Windows XP.

Header: Include wmcodecdsp.h.

See Also

• Properties