Audio Subtype GUIDs

Contains a list of 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

WAVE_FORMAT_RAW_AAC1 (0x00FF)

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:

WAVE_FORMAT_MPEG_HEAAC (0x1610)

MFAudioFormat_ADTS

Not used.

WAVE_FORMAT_MPEG_ADTS_AAC (0x1600)

MFAudioFormat_Dolby_AC3

Dolby Digital (AC-3).Same GUID value as MEDIASUBTYPE_DOLBY_AC3, which is defined in ksuuids.h

None.

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.

WAVE_FORMAT_DOLBY_AC3_SPDIF (0x0092)

MFAudioFormat_Dolby_DDPlus

Dolby Digital Plus.Same GUID value as MEDIASUBTYPE_DOLBY_DDPLUS, which is defined in wmcodecdsp.h.

None

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_Float

Uncompressed IEEE floating-point audio.

WAVE_FORMAT_IEEE_FLOAT (0x0003)

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_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:

Start with the value MFAudioFormat_Base, which is defined in mfaph.i.
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.