---
title: advanceIntervalForDelegateInvocation
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avplayeritemlegibleoutput/advanceintervalfordelegateinvocation
---

# advanceIntervalForDelegateInvocation

The time interval, in seconds, that a player item legible output object messages its delegate earlier than normal.

## Declaration

```swift
var advanceIntervalForDelegateInvocation: TimeInterval { get set }
```

## Discussion

Discussion If possible, an AVPlayerItemLegibleOutput instance messages its delegate advanceIntervalForDelegateInvocation seconds earlier than it otherwise would. If the value provided is large, the delegate methods are invoked as soon as possible.

## See Also

### Configuring the delegate

- [delegate](avfoundation/avplayeritemlegibleoutput/delegate.md)
- [setDelegate(_:queue:)](avfoundation/avplayeritemlegibleoutput/setdelegate(_:queue:).md)
- [AVPlayerItemLegibleOutputPushDelegate](avfoundation/avplayeritemlegibleoutputpushdelegate.md)
- [delegateQueue](avfoundation/avplayeritemlegibleoutput/delegatequeue.md)