Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Specifies whether the audio streams in a presentation have a variable bit rate.
Data type
UINT32
Get/set
To get this attribute, call IMFAttributes::GetUINT32.
To set this attribute, call IMFAttributes::SetUINT32.
Applies To
Remarks
This is an optional attribute for presentation descriptors. If the attribute is TRUE (nonzero), the presentation contains at least one variable-bit-rate (VBR) audio stream. If the attribute is FALSE, all of the audio streams have a constant bit rate.
The GUID constant for this attribute is exported from mfuuid.lib.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 7 [desktop apps | UWP apps] |
| Minimum supported server |
Windows Server 2008 R2 [desktop apps | UWP apps] |
| Header |
|
See also