Major Media Types

In a media type, the major type describes the overall category of the data, such as audio or video. The subtype, if present, further refines the major type. For example, if the major type is video, the subtype might be 32-bit RGB video. Subtypes also distinguish encoded formats, such as H.264 video, from uncompressed formats.

Major type and subtype are identified by GUIDs and stored in the following attributes:

Attribute Description
MF_MT_MAJOR_TYPE Major type.


The following major types are defined.

Major Type Description Subtypes
MFMediaType_Audio Audio. Audio Subtype GUIDs.
MFMediaType_Binary Binary stream. None.
MFMediaType_FileTransfer A stream that contains data files. None.
MFMediaType_HTML HTML stream. None.
MFMediaType_Image Still image stream. WIC GUIDs and CLSIDs.
MFMediaType_Protected Protected media. The subtype specifies the content protection scheme.
MFMediaType_Perception Streams from a camera sensor or processing unit that reasons and understands raw video data and provides understanding of the environment or humans in it. None.
MFMediaType_SAMI Synchronized Accessible Media Interchange (SAMI) captions. None.
MFMediaType_Script Script stream. None.
MFMediaType_Stream Multiplexed stream or elementary stream. Stream Subtype GUIDs
MFMediaType_Video Video. Video Subtype GUIDs.


Third-party components can define new major types and new subtypes.


Media Types