---
title: rateDidChangeOriginatingParticipantKey
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avplayer/ratedidchangeoriginatingparticipantkey
---

# rateDidChangeOriginatingParticipantKey

A key to retrieve the identifier of the participant that originates the rate change.

## Declaration

```swift
class let rateDidChangeOriginatingParticipantKey: String
```

## Discussion

Discussion The associated value is a UUID of a participant in the playback coordinator’s otherParticipants array.

## See Also

### User information keys

- [rateDidChangeReasonKey](avfoundation/avplayer/ratedidchangereasonkey.md)
- [AVPlayer.RateDidChangeReason](avfoundation/avplayer/ratedidchangereason.md)