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# MPEG-2-conformant Formats

Constants that identify MPEG-2 formats.

## Topics

### Constants

[`let kCMFormatDescriptionConformsToMPEG2VideoProfile: CFString`](/documentation/CoreMedia/kCMFormatDescriptionConformsToMPEG2VideoProfile)

The value is a number that specifies the MPEG2 video profile.

[`let kCMFormatDescriptionExtension_TemporalQuality: CFString`](/documentation/CoreMedia/kCMFormatDescriptionExtension_TemporalQuality)

The value is a number.

[`let kCMFormatDescriptionExtension_SpatialQuality: CFString`](/documentation/CoreMedia/kCMFormatDescriptionExtension_SpatialQuality)

The value is a number.

[`let kCMFormatDescriptionExtension_Version: CFString`](/documentation/CoreMedia/kCMFormatDescriptionExtension_Version)

The value is a number.

[`let kCMFormatDescriptionExtension_RevisionLevel: CFString`](/documentation/CoreMedia/kCMFormatDescriptionExtension_RevisionLevel)

The value is a number.

[`let kCMFormatDescriptionExtension_Vendor: CFString`](/documentation/CoreMedia/kCMFormatDescriptionExtension_Vendor)

The value is a string of four character codes.

[`let kCMFormatDescriptionVendor_Apple: CFString`](/documentation/CoreMedia/kCMFormatDescriptionVendor_Apple)

A string that speicifies Apple as the vendor.


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