<!--
{
  "availability" : [
    "macOS: 14.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "MediaExtension",
  "identifier" : "/documentation/MediaExtension/MEHEVCDependencyInfo",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "MediaExtension"
    ],
    "preciseIdentifier" : "c:objc(cs)MEHEVCDependencyInfo"
  },
  "title" : "MEHEVCDependencyInfo"
}
-->

# MEHEVCDependencyInfo

An object that provides information about the HEVC dependency attributes of a sample.

```
class MEHEVCDependencyInfo
```

## Topics

### Inspecting the HEVC dependency attributes of a sample

[`temporalSubLayerAccess`](/documentation/MediaExtension/MEHEVCDependencyInfo/hasTemporalSubLayerAccess)

A Boolean value that indicates if the sample has an HEVC temporal sublayer access (TSA) picture.

[`stepwiseTemporalSubLayerAccess`](/documentation/MediaExtension/MEHEVCDependencyInfo/hasStepwiseTemporalSubLayerAccess)

A Boolean value that indicates if the sample has an HEVC stepwise temporal sublayer access (STSA) picture.

[`syncSampleNALUnitType`](/documentation/MediaExtension/MEHEVCDependencyInfo/syncSampleNALUnitType)

The NAL unit type for HEVC sync sample groups.

[`temporalLevel`](/documentation/MediaExtension/MEHEVCDependencyInfo/temporalLevel)

The HEVC temporal level, if available.

[`profileSpace`](/documentation/MediaExtension/MEHEVCDependencyInfo/profileSpace)

The HEVC profile space, if available.

[`tierFlag`](/documentation/MediaExtension/MEHEVCDependencyInfo/tierFlag)

The HEVC tier level flag, if available.

[`profileIndex`](/documentation/MediaExtension/MEHEVCDependencyInfo/profileIndex)

The HEVC profile index, if available.

[`profileCompatibilityFlags`](/documentation/MediaExtension/MEHEVCDependencyInfo/profileCompatibilityFlags)

The HEVC profile compatibility flags (4 bytes), if available.

[`constraintIndicatorFlags`](/documentation/MediaExtension/MEHEVCDependencyInfo/constraintIndicatorFlags)

The HEVC constraint indicator flags (6 bytes), if available.

[`levelIndex`](/documentation/MediaExtension/MEHEVCDependencyInfo/levelIndex)

The HEVC level index, if available.

## Relationships

### Conforms To

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`CVarArg`](/documentation/Swift/CVarArg)

[`Sendable`](/documentation/Swift/Sendable)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`Hashable`](/documentation/Swift/Hashable)

[`NSCopying`](/documentation/Foundation/NSCopying)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Equatable`](/documentation/Swift/Equatable)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)