Subtypeĭolby Digital audio see Audio Subtypes. The Dolby audio decoder supports the following input subtypes. The class identifier (CLSID) of the Dolby audio decoder is CLSID_CMSDDPlusDecMFT, defined in the header file wmcodecdsp.h. The decoder can also convert a Dolby Digital Plus stream to Dolby Digital format for AC-3 S/PIDF output, or format a Dolby Digital Plus stream for HDMI digital output. For versions of Windows prior to Windows 8, the Microsoft implementation of the Dolby Digital technology is restricted under terms of the Dolby Digital licensing program to use by Microsoft applications.įor more information about these formats, refer to Advanced Television Systems Committee (ATSC) document Digital Audio Compression Standard (AC-3, E-AC-3) Revision B.
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