---
title: Metadata Identifiers
framework: coremedia
role: collectionGroup
role_heading: API Collection
path: coremedia/metadata-identifiers
---

# Metadata Identifiers

Constants that describe metadata identifiers.

## Topics

### Constants

- [kCMMetadataIdentifier_QuickTimeMetadataLocation_ISO6709](coremedia/kcmmetadataidentifier_quicktimemetadatalocation_iso6709.md)
- [kCMMetadataIdentifier_QuickTimeMetadataDirection_Facing](coremedia/kcmmetadataidentifier_quicktimemetadatadirection_facing.md)
- [kCMMetadataIdentifier_QuickTimeMetadataPreferredAffineTransform](coremedia/kcmmetadataidentifier_quicktimemetadatapreferredaffinetransform.md)
- [kCMMetadataIdentifier_QuickTimeMetadataVideoOrientation](coremedia/kcmmetadataidentifier_quicktimemetadatavideoorientation.md)
- [kCMMetadataIdentifier_QuickTimeMetadataLivePhotoStillImageTransformReferenceDimensions](coremedia/kcmmetadataidentifier_quicktimemetadatalivephotostillimagetransformreferencedimensions.md)
- [kCMMetadataIdentifier_QuickTimeMetadataLivePhotoStillImageTransform](coremedia/kcmmetadataidentifier_quicktimemetadatalivephotostillimagetransform.md)

## See Also

### Constants

- [Metadata Identifier Error Codes](coremedia/metadata-identifier-errors.md)
- [Metadata Registry Error Codes](coremedia/metadata-registry-errors.md)
- [Metadata Identifier Keyspaces](coremedia/metadata-identifier-keyspaces.md)
- [Metadata Base Data Types](coremedia/metadata-base-data-types.md)
- [Metadata Data Types](coremedia/metadata-data-types.md)