Audio Subtype GUIDs

The following audio subtype GUIDs are defined. To specify the subtype, set the MF_MT_SUBTYPE attribute on the media type. Except where noted, these constants are defined in the header file mfapi.h.

When these subtypes are used, set the MF_MT_MAJOR_TYPE attribute to MFMediaType_Audio.

GUID Description Format Tag (FOURCC)
MEDIASUBTYPE_RAW_AAC1 Advanced Audio Coding (AAC).
This subtype is used for AAC contained in an AVI file with an audio format tag equal to 0x00FF.
For more information, see AAC Decoder.
Defined in wmcodecdsp.h
MFAudioFormat_AAC Advanced Audio Coding (AAC).
Note: Equivalent to MEDIASUBTYPE_MPEG_HEAAC, defined in wmcodecdsp.h.
The stream can contain raw AAC data or AAC data in an Audio Data Transport Stream (ADTS) stream.
For more information, see:
- AAC Decoder
- MPEG-4 File Source
MFAudioFormat_ADTS Not used. WAVE_FORMAT_MPEG_ADTS_AAC (0x1600)
MFAudioFormat_ALAC Apple Lossless Audio Codec
Supported in Windows 10 and later.
MFAudioFormat_AMR_NB Adaptative Multi-Rate audio
Supported in Windows 8.1 and later.
MFAudioFormat_AMR_WB Adaptative Multi-Rate Wideband audio
Supported in Windows 8.1 and later.
MFAudioFormat_AMR_WP Supported in Windows 8.1 and later.
MFAudioFormat_Dolby_AC3 Dolby Digital (AC-3).
Same GUID value as MEDIASUBTYPE_DOLBY_AC3, which is defined in ksuuids.h
MFAudioFormat_Dolby_AC3_SPDIF Dolby AC-3 audio over Sony/Philips Digital Interface (S/PDIF).
This GUID value is identical to the following subtypes:
  • KSDATAFORMAT_SUBTYPE_IEC61937_DOLBY_DIGITAL, defined in ksmedia.h.
  • MEDIASUBTYPE_DOLBY_AC3_SPDIF, defined in uuids.h.
MFAudioFormat_Dolby_DDPlus Dolby Digital Plus.
Same GUID value as MEDIASUBTYPE_DOLBY_DDPLUS, which is defined in wmcodecdsp.h.
MFAudioFormat_DRM Encrypted audio data used with secure audio path. WAVE_FORMAT_DRM (0x0009)
MFAudioFormat_DTS Digital Theater Systems (DTS) audio. WAVE_FORMAT_DTS (0x0008)
MFAudioFormat_FLAC Free Lossless Audio Codec
Supported in Windows 10 and later.
MFAudioFormat_Float Uncompressed IEEE floating-point audio. WAVE_FORMAT_IEEE_FLOAT (0x0003)
MFAudioFormat_Float_SpatialObjects Uncompressed IEEE floating-point audio. None
MFAudioFormat_MP3 MPEG Audio Layer-3 (MP3). WAVE_FORMAT_MPEGLAYER3 (0x0055)
MFAudioFormat_MPEG MPEG-1 audio payload. WAVE_FORMAT_MPEG (0x0050)
MFAudioFormat_MSP1 Windows Media Audio 9 Voice codec. WAVE_FORMAT_WMAVOICE9 (0x000A)
MFAudioFormat_Opus Opus
Supported in Windows 10 and later.
MFAudioFormat_PCM Uncompressed PCM audio. WAVE_FORMAT_PCM (1)
MFAudioFormat_QCELP QCELP (Qualcomm Code Excited Linear Prediction) audio. None
MFAudioFormat_WMASPDIF Windows Media Audio 9 Professional codec over S/PDIF. WAVE_FORMAT_WMASPDIF (0x0164)
MFAudioFormat_WMAudio_Lossless Windows Media Audio 9 Lossless codec or Windows Media Audio 9.1 codec. WAVE_FORMAT_WMAUDIO_LOSSLESS (0x0163)
MFAudioFormat_WMAudioV8 Windows Media Audio 8 codec, Windows Media Audio 9 codec, or Windows Media Audio 9.1 codec. WAVE_FORMAT_WMAUDIO2 (0x0161)
MFAudioFormat_WMAudioV9 Windows Media Audio 9 Professional codec or Windows Media Audio 9.1 Professional codec. WAVE_FORMAT_WMAUDIO3 (0x0162)

The format tags listed in the third column of this table are used in the WAVEFORMATEX structure, and are defined in the header file mmreg.h.

Given an audio format tag, you can create an audio subtype GUID as follows:

  1. Start with the value MFAudioFormat_Base, which is defined in mfaph.i.
  2. Replace the first DWORD of this GUID with the format tag.

You can use the DEFINE_MEDIATYPE_GUID macro to define a new GUID constant that follows this pattern.

Audio Media Types


Media Type GUIDs

Media Types