---
title: kCMSampleAttachmentKey_HEVCTemporalSubLayerAccess
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmsampleattachmentkey_hevctemporalsublayeraccess
---

# kCMSampleAttachmentKey_HEVCTemporalSubLayerAccess

An attachment that indicates a temporal sublayer access grouping.

## Declaration

```swift
let kCMSampleAttachmentKey_HEVCTemporalSubLayerAccess: CFString
```

## See Also

### Constants

- [kCMAttachmentMode_ShouldNotPropagate](coremedia/kcmattachmentmode_shouldnotpropagate.md)
- [kCMAttachmentMode_ShouldPropagate](coremedia/kcmattachmentmode_shouldpropagate.md)
- [kCMSampleAttachmentKey_HEVCTemporalLevelInfo](coremedia/kcmsampleattachmentkey_hevctemporallevelinfo.md)
- [kCMSampleAttachmentKey_HEVCStepwiseTemporalSubLayerAccess](coremedia/kcmsampleattachmentkey_hevcstepwisetemporalsublayeraccess.md)
- [kCMSampleAttachmentKey_HEVCSyncSampleNALUnitType](coremedia/kcmsampleattachmentkey_hevcsyncsamplenalunittype.md)
- [kCMSampleAttachmentKey_CryptorSubsampleAuxiliaryData](coremedia/kcmsampleattachmentkey_cryptorsubsampleauxiliarydata.md)
- [kCMSampleAttachmentKey_AudioIndependentSampleDecoderRefreshCount](coremedia/kcmsampleattachmentkey_audioindependentsampledecoderrefreshcount.md)
- [kCMSampleBufferAttachmentKey_CameraIntrinsicMatrix](coremedia/kcmsamplebufferattachmentkey_cameraintrinsicmatrix.md)