Adding Metadata to Converted Files
[The feature associated with this page, Windows Media Player SDK, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of Windows Media Player SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Converted files must contain certain metadata to ensure a good user experience. At a minimum, converted files must contain the primary attributes listed in the Windows Media Metadata Usage Guidelines.
For music files, set the value for WM/MediaClassPrimaryID to D1607DBC-E323-4BE2-86A1-48A42A28441E.
For voicemail files, set the value for WM/MediaClassPrimaryID to 01CD0F29-DA4E-4157-897B-6275D50C4F11, which is the primary class GUID for audio files. Set the value for WM/MediaClassSecondaryID to 193c8824-4d52-4178-90bd-305240b04636.
For voice notes, set the value for WM/MediaClassPrimaryID to 01CD0F29-DA4E-4157-897B-6275D50C4F11. Set the value for WM/MediaClassSecondaryID to 3A172A13-2BD9-4831-835B-114F6A95943F.
Set the value for WM/ContentDistributor to the key name for the music service that provided the content.
Set the value for WM/UniqueFileIdentifier to the content ID. This will enable you to retrieve specific content items at a future time.
Set a value for WM/WMShadowFileSourceFileType.
For protected content, use the Windows Media Format SDK to set the DRM_DRMHeader_ContentID attribute to the content ID.
For protected content, set a value for WM/WMShadowFileSourceDRMType.
Related topics