Attribute List
[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The predefined attributes included with this SDK are presented alphabetically in the following table. Each attribute has a name, a global identifier, and a data type as defined by the appropriate member of the WMT_ATTR_DATATYPE enumeration. Some attributes do not use a simple data type, or are formatted according to a structure. Entries for these attributes list a structure name in the data-type column with the data type used to set the value in parentheses.
Note
See DRM Attribute List for a table of all the DRM-related attributes.
When you are programming with these attributes, you should use the global identifier rather than using the name as a string literal. By using the global identifier, any typographical errors will result in an error at compile time.
| Attribute name | Global identifier | Data type |
|---|---|---|
| ASFLeakyBucketPairs | g_wszASFLeakyBucketPairs | WMT_TYPE_BINARY |
| AspectRatioX | g_wszWMAspectRatioX | WMT_TYPE_DWORD |
| AspectRatioY | g_wszWMAspectRatioY | WMT_TYPE_DWORD |
| Author | g_wszWMAuthor | WMT_TYPE_STRING |
| AverageLevel | g_wszAverageLevel | WMT_TYPE_DWORD |
| BannerImageData | g_wszWMBannerImageData | WMT_TYPE_BINARY |
| BannerImageType | g_wszWMBannerImageType | WMT_TYPE_DWORD |
| BannerImageURL | g_wszWMBannerImageURL | WMT_TYPE_STRING |
| Bitrate | g_wszWMBitrate | WMT_TYPE_DWORD |
| Broadcast | g_wszWMBroadcast | WMT_TYPE_BOOL |
| BufferAverage | g_wszBufferAverage | WMT_TYPE_DWORD |
| Can_Skip_Backward | g_wszWMSkipBackward | WMT_TYPE_BOOL |
| Can_Skip_Forward | g_wszWMSkipForward | WMT_TYPE_BOOL |
| Copyright | g_wszWMCopyright | WMT_TYPE_STRING |
| CopyrightURL | g_wszWMCopyrightURL | WMT_TYPE_STRING |
| CurrentBitrate | g_wszWMCurrentBitrate | WMT_TYPE_DWORD |
| Description | g_wszWMDescription | WMT_TYPE_STRING |
| DRM_ContentID | g_wszWMDRM_ContentID | WMT_TYPE_STRING |
| DRM_DRMHeader_ContentDistributor | g_wszWMDRM_DRMHeader_ContentDistributor | WMT_TYPE_STRING |
| DRM_DRMHeader_ContentID | g_wszWMDRM_DRMHeader_ContentID | WMT_TYPE_STRING |
| DRM_DRMHeader_IndividualizedVersion | g_wszWMDRM_DRMHeader_IndividualizedVersion | WMT_TYPE_STRING |
| DRM_DRMHeader_KeyID | g_wszWMDRM_DRMHeader_KeyID | WMT_TYPE_STRING |
| DRM_DRMHeader_LicenseAcqURL | g_wszWMDRM_DRMHeader_LicenseAcqURL | WMT_TYPE_STRING |
| DRM_DRMHeader_SubscriptionContentID | g_wszWMDRM_DRMHeader_SubscriptionContentID | WMT_TYPE_STRING |
| DRM_DRMHeader | g_wszWMDRM_DRMHeader | WMT_TYPE_STRING |
| DRM_IndividualizedVersion | g_wszWMDRM_IndividualizedVersion | WMT_TYPE_STRING |
| DRM_KeyID | g_wszWMDRM_KeyID | WMT_TYPE_STRING |
| DRM_LASignatureCert | g_wszWMDRM_LASignatureCert | WMT_TYPE_STRING |
| DRM_LASignatureLicSrvCert | g_wszWMDRM_LASignatureLicSrvCert | WMT_TYPE_STRING |
| DRM_LASignaturePrivKey | g_wszWMDRM_LASignaturePrivKey | WMT_TYPE_STRING |
| DRM_LASignatureRootCert | g_wszWMDRM_LASignatureRootCert | WMT_TYPE_STRING |
| DRM_LicenseAcqURL | g_wszWMDRM_LicenseAcqURL | WMT_TYPE_STRING |
| DRM_LicenseID | g_wszWMDRM_LicenseID | WMT_TYPE_STRING |
| DRM_SourceID | g_wszWMDRM_SourceID | WMT_TYPE_DWORD |
| DRM_V1LicenseAcqURL | g_wszWMDRM_V1LicenseAcqURL | WMT_TYPE_STRING |
| Duration | g_wszWMDuration | WMT_TYPE_QWORD |
| FileSize | g_wszWMFileSize | WMT_TYPE_QWORD |
| HasArbitraryDataStream | g_wszWMHasArbitraryDataStream | WMT_TYPE_BOOL |
| HasAttachedImages | g_wszWMHasAttachedImages | WMT_TYPE_BOOL |
| HasAudio | g_wszWMHasAudio | WMT_TYPE_BOOL |
| HasFileTransferStream | g_wszWMHasFileTransferStream | WMT_TYPE_BOOL |
| HasImage | g_wszWMHasImage | WMT_TYPE_BOOL |
| HasScript | g_wszWMHasScript | WMT_TYPE_BOOL |
| HasVideo | g_wszWMHasVideo | WMT_TYPE_BOOL |
| Is_Protected | g_wszWMProtected | WMT_TYPE_BOOL |
| Is_Trusted | g_wszWMTrusted | WMT_TYPE_BOOL |
| ISAN | g_wszISAN | WMT_TYPE_STRING |
| IsVBR | g_wszWMIsVBR | WMT_TYPE_BOOL |
| NSC_Address | g_wszWMNSCAddress | WMT_TYPE_STRING |
| NSC_Description | g_wszWMNSCDescription | WMT_TYPE_STRING |
| NSC_Email | g_wszWMNSCEmail | WMT_TYPE_STRING |
| NSC_Name | g_wszWMNSCName | WMT_TYPE_STRING |
| NSC_Phone | g_wszWMNSCPhone | WMT_TYPE_STRING |
| NumberOfFrames | g_wszWMNumberOfFrames | WMT_TYPE_QWORD |
| OptimalBitrate | g_wszWMOptimalBitrate | WMT_TYPE_DWORD |
| PeakValue | g_wszPeakValue | WMT_TYPE_DWORD |
| Rating | g_wszWMRating | WMT_TYPE_STRING |
| Seekable | g_wszWMSeekable | WMT_TYPE_BOOL |
| Signature_Name | g_wszWMSignature_Name | WMT_TYPE_STRING |
| Stridable | g_wszWMStridable | WMT_TYPE_BOOL |
| Title | g_wszWMTitle | WMT_TYPE_STRING |
| VBRPeak | g_wszVBRPeak | WMT_TYPE_DWORD |
| WM/AlbumArtist | g_wszWMAlbumArtist | WMT_TYPE_STRING |
| WM/AlbumCoverURL | g_wszWMAlbumCoverURL | WMT_TYPE_STRING |
| WM/AlbumTitle | g_wszWMAlbumTitle | WMT_TYPE_STRING |
| WM/ASFPacketCount | g_wszWMASFPacketCount | WMT_TYPE_QWORD |
| WM/ASFSecurityObjectsSize | g_wszWMASFSecurityObjectsSize | WMT_TYPE_QWORD |
| WM/AudioFileURL | g_wszWMAudioFileURL | WMT_TYPE_STRING |
| WM/AudioSourceURL | g_wszWMAudioSourceURL | WMT_TYPE_STRING |
| WM/AuthorURL | g_wszWMAuthorURL | WMT_TYPE_STRING |
| WM/BeatsPerMinute | g_wszWMBeatsPerMinute | WMT_TYPE_STRING |
| WM/Category | g_wszWMCategory | WMT_TYPE_STRING |
| WM/Codec | g_wszWMCodec | WMT_TYPE_STRING |
| WM/Composer | g_wszWMComposer | WMT_TYPE_STRING |
| WM/Conductor | g_wszWMConductor | WMT_TYPE_STRING |
| WM/ContainerFormat | g_wszWMContainerFormat | WMT_STORAGE_FORMAT (WMT_TYPE_BINARY) |
| WM/ContentDistributor | g_wszWMContentDistributor | WMT_TYPE_STRING |
| WM/ContentGroupDescription | g_wszWMContentGroupDescription | WMT_TYPE_STRING |
| WM/Director | g_wszWMDirector | WMT_TYPE_STRING |
| WM/DRM | g_wszWMDRM | WMT_TYPE_STRING |
| WM/DVDID | g_wszWMDVDID | WMT_TYPE_STRING |
| WM/EncodedBy | g_wszWMEncodedBy | WMT_TYPE_STRING |
| WM/EncodingSettings | g_wszWMEncodingSettings | WMT_TYPE_STRING |
| WM/EncodingTime | g_wszWMEncodingTime | FILETIME (WMT_TYPE_QWORD) |
| WM/Genre | g_wszWMGenre | WMT_TYPE_STRING |
| WM/GenreID | g_wszWMGenreID | WMT_TYPE_STRING |
| WM/InitialKey | g_wszWMInitialKey | WMT_TYPE_STRING |
| WM/ISRC | g_wszWMISRC | WMT_TYPE_STRING |
| WM/Language | g_wszWMLanguage | WMT_TYPE_STRING |
| WM/Lyrics | g_wszWMLyrics | WMT_TYPE_STRING |
| WM/Lyrics_Synchronised | g_wszWMLyrics_Synchronised | WM_SYNCHRONISED_LYRICS (WMT_TYPE_BINARY) |
| WM/MCDI | g_wszWMMCDI | WMT_TYPE_BINARY |
| WM/MediaClassPrimaryID | g_wszWMMediaClassPrimaryID | WMT_TYPE_GUID |
| WM/MediaClassSecondaryID | g_wszWMMediaClassSecondaryID | WMT_TYPE_GUID |
| WM/MediaCredits | g_wszWMMediaCredits | WMT_TYPE_STRING |
| WM/MediaIsDelay | g_wszWMMediaIsDelay | WMT_TYPE_BOOL |
| WM/MediaIsFinale | g_wszWMMediaIsFinale | WMT_TYPE_BOOL |
| WM/MediaIsLive | g_wszWMMediaIsLive | WMT_TYPE_BOOL |
| WM/MediaIsPremiere | g_wszWMMediaIsPremiere | WMT_TYPE_BOOL |
| WM/MediaIsRepeat | g_wszWMMediaIsRepeat | WMT_TYPE_BOOL |
| WM/MediaIsSAP | g_wszWMMediaIsSAP | WMT_TYPE_BOOL |
| WM/MediaIsStereo | g_wszWMMediaIsStereo | WMT_TYPE_BOOL |
| WM/MediaIsSubtitled | g_wszWMMediaIsSubtitled | WMT_TYPE_BOOL |
| WM/MediaIsTape | g_wszWMMediaIsTape | WMT_TYPE_BOOL |
| WM/MediaNetworkAffiliation | g_wszWMMediaNetworkAffiliation | WMT_TYPE_STRING |
| WM/MediaOriginalBroadcastDateTime | g_wszWMMediaOriginalBroadcastDateTime | WMT_TYPE_STRING |
| WM/MediaOriginalChannel | g_wszWMMediaOriginalChannel | WMT_TYPE_STRING |
| WM/MediaStationCallSign | g_wszWMMediaStationCallSign | WMT_TYPE_STRING |
| WM/MediaStationName | g_wszWMMediaStationName | WMT_TYPE_STRING |
| WM/ModifiedBy | g_wszWMModifiedBy | WMT_TYPE_STRING |
| WM/Mood | g_wszWMMood | WMT_TYPE_STRING |
| WM/OriginalAlbumTitle | g_wszWMOriginalAlbumTitle | WMT_TYPE_STRING |
| WM/OriginalArtist | g_wszWMOriginalArtist | WMT_TYPE_STRING |
| WM/OriginalFilename | g_wszWMOriginalFilename | WMT_TYPE_STRING |
| WM/OriginalLyricist | g_wszWMOriginalLyricist | WMT_TYPE_STRING |
| WM/OriginalReleaseTime | g_wszWMOriginalReleaseTime | WMT_TYPE_STRING |
| WM/OriginalReleaseYear | g_wszWMOriginalReleaseYear | WMT_TYPE_STRING |
| WM/ParentalRating | g_wszWMParentalRating | WMT_TYPE_STRING |
| WM/ParentalRatingReason | g_wszWMParentalRatingReason | WMT_TYPE_STRING |
| WM/PartOfSet | g_wszWMPartOfSet | WMT_TYPE_STRING |
| WM/PeakBitrate | g_wszWMPeakBitrate | WMT_TYPE_DWORD |
| WM/Period | g_wszWMPeriod | WMT_TYPE_STRING |
| WM/Picture | g_wszWMPicture | WM_PICTURE (WMT_TYPE_BINARY) |
| WM/PlaylistDelay | g_wszWMPlaylistDelay | WMT_TYPE_STRING |
| WM/Producer | g_wszWMProducer | WMT_TYPE_STRING |
| WM/PromotionURL | g_wszWMPromotionURL | WMT_TYPE_STRING |
| WM/ProtectionType | g_wszWMProtectionType | WMT_TYPE_STRING |
| WM/Provider | g_wszWMProvider | WMT_TYPE_STRING |
| WM/ProviderCopyright | g_wszWMProviderCopyright | WMT_TYPE_STRING |
| WM/ProviderRating | g_wszWMProviderRating | WMT_TYPE_STRING |
| WM/ProviderStyle | g_wszWMProviderStyle | WMT_TYPE_STRING |
| WM/Publisher | g_wszWMPublisher | WMT_TYPE_STRING |
| WM/RadioStationName | g_wszWMRadioStationName | WMT_TYPE_STRING |
| WM/RadioStationOwner | g_wszWMRadioStationOwner | WMT_TYPE_STRING |
| WM/SharedUserRating | g_wszWMSharedUserRating | WMT_TYPE_DWORD |
| WM/StreamTypeInfo | g_wszWMStreamTypeInfo | WM_STREAM_TYPE_INFO (WMT_TYPE_BINARY) |
| WM/SubscriptionContentID | g_wszWMSubscriptionContentID | WMT_TYPE_STRING |
| WM/SubTitle | g_wszWMSubTitle | WMT_TYPE_STRING |
| WM/SubTitleDescription | g_wszWMSubTitleDescription | WMT_TYPE_STRING |
| WM/Text | g_wszWMText | WM_USER_TEXT (WMT_TYPE_BINARY) |
| WM/ToolName | g_wszWMToolName | WMT_TYPE_STRING |
| WM/ToolVersion | g_wszWMToolVersion | WMT_TYPE_STRING |
| WM/Track | g_wszWMTrack | WMT_TYPE_STRING |
| WM/TrackNumber | g_wszWMTrackNumber | WMT_TYPE_STRING |
| WM/UniqueFileIdentifier | g_wszWMUniqueFileIdentifier | WMT_TYPE_STRING |
| WM/UserWebURL | g_wszWMUserWebURL | WM_USER_WEB_URL (WMT_TYPE_BINARY) |
| WM/VideoClosedCaptioning | g_wszWMVideoClosedCaptioning | WMT_TYPE_BOOL |
| WM/VideoFrameRate | g_wszWMVideoFrameRate | WMT_TYPE_DWORD |
| WM/VideoHeight | g_wszWMVideoHeight | WMT_TYPE_DWORD |
| WM/VideoWidth | g_wszWMVideoWidth | WMT_TYPE_DWORD |
| WM/WMADRCAverageReference | g_wszWMWMADRCAverageReference | WMT_TYPE_DWORD |
| WM/WMADRCAverageTarget | g_wszWMWMADRCAverageTarget | WMT_TYPE_DWORD |
| WM/WMADRCPeakReference | g_wszWMWMADRCPeakReference | WMT_TYPE_DWORD |
| WM/WMADRCPeakTarget | g_wszWMWMADRCPeakTarget | WMT_TYPE_DWORD |
| WM/WMCollectionGroupID | g_wszWMWMCollectionGroupID | WMT_TYPE_GUID |
| WM/WMCollectionID | g_wszWMWMCollectionID | WMT_TYPE_GUID |
| WM/WMContentID | g_wszWMWMContentID | WMT_TYPE_GUID |
| WM/WMShadowFileSourceDRMType | g_wszWMWMShadowFileSourceDRMType | WMT_TYPE_STRING |
| WM/WMShadowFileSourceFileType | g_wszWMWMShadowFileSourceFileType | WMT_TYPE_STRING |
| WM/Writer | g_wszWMWriter | WMT_TYPE_STRING |
| WM/Year | g_wszWMYear | WMT_TYPE_STRING |
Remarks
The following constants are defined with the attributes. Each one indicates the number of a specific type of attribute. You do not need to use these values for anything in your applications.
| Constant | Value |
|---|---|
| g_dwWMSpecialAttributes | 20 |
| g_dwWMContentAttributes | 5 |
| g_dwWMNSCAttributes | 5 |
Related topics