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# systemPressureState

A value that indicates the capture device’s current system pressure state.

```
var systemPressureState: AVCaptureDevice.SystemPressureState { get }
```

## Discussion

This property indicates whether the capture device is currently in an elevated system pressure condition. When system pressure reaches a [`shutdown`](/documentation/AVFoundation/AVCaptureDevice/SystemPressureState-swift.class/Level-swift.struct/shutdown) state, the capture device can’t continue to provide input, and the capture session becomes interrupted until the pressured state abates.

You can effectively mitigate system pressure by lowering the device’s [`activeVideoMinFrameDuration`](/documentation/AVFoundation/AVCaptureDevice/activeVideoMinFrameDuration) in response to changes in the system pressure state. Implement frame rate throttling to bring system pressure down if your capture use case can tolerate a reduced frame rate.

---

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