---
title: kVTDecompressionPropertyKey_UsingHardwareAcceleratedVideoDecoder
framework: videotoolbox
role: symbol
role_heading: Global Variable
path: videotoolbox/kvtdecompressionpropertykey_usinghardwareacceleratedvideodecoder
---

# kVTDecompressionPropertyKey_UsingHardwareAcceleratedVideoDecoder

Indicates if a hardware-accelerated video decoder is being used.

## Declaration

```swift
let kVTDecompressionPropertyKey_UsingHardwareAcceleratedVideoDecoder: CFString
```

## Discussion

Discussion You can query this property using VTSessionCopyProperty(_:key:allocator:valueOut:) after you have enabled hardware accelerated decode using kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder to see if a hardware accelerated decoder was selected.

## See Also

### Hardware Acceleration

- [kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder](videotoolbox/kvtvideodecoderspecification_enablehardwareacceleratedvideodecoder.md)
- [kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder](videotoolbox/kvtvideodecoderspecification_requirehardwareacceleratedvideodecoder.md)