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# AVPlayer.RateDidChangeReason

A structure that represents a rate change reason.

```
struct RateDidChangeReason
```

## Topics

### Initializers

[`init(rawValue:)`](/documentation/AVFoundation/AVPlayer/RateDidChangeReason/init(rawValue:))

Creates a reason with a string value.

### Rate change reasons

[`appBackgrounded`](/documentation/AVFoundation/AVPlayer/RateDidChangeReason/appBackgrounded)

An app transitions to the background.

[`audioSessionInterrupted`](/documentation/AVFoundation/AVPlayer/RateDidChangeReason/audioSessionInterrupted)

The system interrupts the app’s audio session.

[`setRateCalled`](/documentation/AVFoundation/AVPlayer/RateDidChangeReason/setRateCalled)

An app makes a call to set the player’s rate.

[`setRateFailed`](/documentation/AVFoundation/AVPlayer/RateDidChangeReason/setRateFailed)

An attempt to change the player’s rate fails.


---

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