| Microsoft DirectX 9.0 |
The following table describes the major media types.
| GUID | Description |
| MEDIATYPE_AnalogAudio | Analog audio. |
| MEDIATYPE_AnalogVideo | Analog video. |
| MEDIATYPE_Audio | Audio. |
| MEDIATYPE_AUXLine21Data | Line 21 data. Used by closed captions. |
| MEDIATYPE_File | File. (Obsolete) |
| MEDIATYPE_Interleaved | Interleaved audio and video. Used for Digital Video (DV). |
| MEDIATYPE_LMRT | Obsolete. Do not use. |
| MEDIATYPE_Midi | MIDI format. |
| MEDIATYPE_MPEG2_PES | MPEG-2 PES packets. |
| MEDIATYPE_MPEG2_SECTION | MPEG-2 section data |
| MEDIATYPE_ScriptCommand | Data is a script command, used by closed captions. |
| MEDIATYPE_Stream | Byte stream with no time stamps. |
| MEDIATYPE_Text | Text. |
| MEDIATYPE_Timecode | Timecode data. |
| MEDIATYPE_URL_STREAM | Obsolete. Do not use. |
| MEDIATYPE_Video | Video. |
The subtype GUID further defines the format. For some formats, the subtype GUID might be MEDIASUBTYPE_None, which means the format does not require a subtype.