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MF_MT_AUDIO_WMADRC_AVGREF attribute

Reference average volume level of a Windows Media Audio file.

Data type

UINT32

Remarks

This attribute applies to audio media types for Windows Media Audio codecs. It specifies the original average volume level of the content. The decoder can use this value to perform dynamic range control.

The IMFASFContentInfo::ParseHeader method adds this attribute to the media type if the ASF header contains the WM/WMADRCAverageReference attribute. This attribute is documented in the Windows Media Format SDK documentation.

The GUID constant for this attribute is exported from mfuuid.lib.

Requirements

Minimum supported client

Windows Vista [desktop apps | Windows Store apps]

Minimum supported server

Windows Server 2008 [desktop apps | Windows Store apps]

Header

Mfapi.h

See also

IMFAttributes::GetUINT32
IMFAttributes::SetUINT32
IMFMediaType
Media Type Attributes

 

 

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