MF_PD_AUDIO_ISVARIABLEBITRATE attribute
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