/** * Specialized audio metadata properties. * Includes MusicBrainz IDs, ReplayGain values, AcoustID fingerprints, and Apple Sound Check. */ export declare const SPECIALIZED_PROPERTIES: { readonly musicbrainzArtistId: { readonly key: "MUSICBRAINZ_ARTISTID"; readonly description: "MusicBrainz Artist ID (UUID)"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "MusicBrainz Artist Id"; }; readonly vorbis: "MUSICBRAINZ_ARTISTID"; readonly mp4: "----:com.apple.iTunes:MusicBrainz Artist Id"; }; }; readonly musicbrainzReleaseId: { readonly key: "MUSICBRAINZ_ALBUMID"; readonly description: "MusicBrainz Release ID (UUID)"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "MusicBrainz Album Id"; }; readonly vorbis: "MUSICBRAINZ_ALBUMID"; readonly mp4: "----:com.apple.iTunes:MusicBrainz Album Id"; }; }; readonly musicbrainzTrackId: { readonly key: "MUSICBRAINZ_TRACKID"; readonly description: "MusicBrainz Recording ID (UUID)"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "UFID"; readonly description: "http://musicbrainz.org"; }; readonly vorbis: "MUSICBRAINZ_TRACKID"; readonly mp4: "----:com.apple.iTunes:MusicBrainz Track Id"; }; }; readonly musicbrainzReleaseGroupId: { readonly key: "MUSICBRAINZ_RELEASEGROUPID"; readonly description: "MusicBrainz Release Group ID (UUID)"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "MusicBrainz Release Group Id"; }; readonly vorbis: "MUSICBRAINZ_RELEASEGROUPID"; readonly mp4: "----:com.apple.iTunes:MusicBrainz Release Group Id"; }; }; readonly replayGainTrackGain: { readonly key: "REPLAYGAIN_TRACK_GAIN"; readonly description: "ReplayGain track gain in dB (e.g., '-6.54 dB')"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "ReplayGain_Track_Gain"; }; readonly vorbis: "REPLAYGAIN_TRACK_GAIN"; readonly mp4: "----:com.apple.iTunes:replaygain_track_gain"; }; }; readonly replayGainTrackPeak: { readonly key: "REPLAYGAIN_TRACK_PEAK"; readonly description: "ReplayGain track peak value (0.0-1.0)"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "ReplayGain_Track_Peak"; }; readonly vorbis: "REPLAYGAIN_TRACK_PEAK"; readonly mp4: "----:com.apple.iTunes:replaygain_track_peak"; }; }; readonly replayGainAlbumGain: { readonly key: "REPLAYGAIN_ALBUM_GAIN"; readonly description: "ReplayGain album gain in dB"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "ReplayGain_Album_Gain"; }; readonly vorbis: "REPLAYGAIN_ALBUM_GAIN"; readonly mp4: "----:com.apple.iTunes:replaygain_album_gain"; }; }; readonly replayGainAlbumPeak: { readonly key: "REPLAYGAIN_ALBUM_PEAK"; readonly description: "ReplayGain album peak value (0.0-1.0)"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "ReplayGain_Album_Peak"; }; readonly vorbis: "REPLAYGAIN_ALBUM_PEAK"; readonly mp4: "----:com.apple.iTunes:replaygain_album_peak"; }; }; readonly acoustidFingerprint: { readonly key: "ACOUSTID_FINGERPRINT"; readonly description: "AcoustID fingerprint (Chromaprint)"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "Acoustid Fingerprint"; }; readonly vorbis: "ACOUSTID_FINGERPRINT"; readonly mp4: "----:com.apple.iTunes:Acoustid Fingerprint"; }; }; readonly acoustidId: { readonly key: "ACOUSTID_ID"; readonly description: "AcoustID UUID"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "Acoustid Id"; }; readonly vorbis: "ACOUSTID_ID"; readonly mp4: "----:com.apple.iTunes:Acoustid Id"; }; }; readonly appleSoundCheck: { readonly key: "ITUNNORM"; readonly description: "Apple Sound Check normalization data"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "iTunNORM"; }; readonly vorbis: "ITUNNORM"; readonly mp4: "----:com.apple.iTunes:iTunNORM"; }; }; /** * Apple gapless-playback data (encoder delay, padding, original sample count). * * Exists so the two Apple freeform atoms are presented consistently: without * it, `properties()` answered `appleSoundCheck` for iTunNORM but the raw * uppercased `ITUNSMPB` for its sibling, because only one had an alias. The * name mirrors `appleSoundCheck` — vendor-prefixed, feature-named rather than * atom-named (tuneup-ibo). */ readonly appleGaplessInfo: { readonly key: "ITUNSMPB"; readonly description: "Apple gapless playback data (encoder delay and padding)"; readonly type: "string"; readonly supportedFormats: readonly ["ID3v2", "MP4", "Vorbis"]; readonly mappings: { readonly id3v2: { readonly frame: "TXXX"; readonly description: "iTunSMPB"; }; readonly vorbis: "ITUNSMPB"; readonly mp4: "----:com.apple.iTunes:iTunSMPB"; }; }; }; //# sourceMappingURL=specialized-properties.d.ts.map