MF_MT_AUDIO_WMADRC_PEAKREF attribute

Reference peak volume level of a Windows Media Audio file.

Data type

UINT32

Syntax

GUID MF_MT_AUDIO_WMADRC_PEAKREF = {0x9d62927d,0x36be,0x4cf2,{0xb5,0xc4,0xa3,0x92,0x6e,0x3e,0x87,0x11} }  

Remarks

This attribute applies to audio media types for Windows Media Audio codecs. It specifies the original peak 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/WMADRCPeakReference attribute. This attribute is documented in the Windows Media Format SDK documentation.

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

Requirements

Header: Declared in mfapi.h.