Contains additional format data for a media type.
The meaning of the data in this attribute depends on the format that is described by the media type.
|Format Type||Additional Format Data|
|Windows Media codec.||Codec private data.|
|Converted VIDEOINFOHEADER or VIDEOINFOHEADER2 structure.||Extra data that appears after the BITMAPINFOHEADER structure, not including the color table or color masks.|
|Converted WAVEFORMATEX or WAVEFORMATEXTENSIBLE structure.||Extra data that appears after the audio format structure.|
The GUID constant for this attribute is exported from mfuuid.lib.
Minimum supported client
|Windows Vista [desktop apps | Windows Store apps]|
Minimum supported server
|Windows Server 2008 [desktop apps | Windows Store apps]|