---
title: AVSampleBufferAudioRendererFlushTimeKey
framework: avfoundation
role: symbol
role_heading: Global Variable
path: avfoundation/avsamplebufferaudiorendererflushtimekey
---

# AVSampleBufferAudioRendererFlushTimeKey

The key that indicates the presentation timestamp of the first queued sample that was flushed.

## Declaration

```swift
let AVSampleBufferAudioRendererFlushTimeKey: String
```

## Discussion

Discussion The value for this key is an NSValue object that wraps a CMTime value.

## See Also

### Removing queued buffers

- [flush(fromSourceTime:completionHandler:)](avfoundation/avsamplebufferaudiorenderer/flush(fromsourcetime:completionhandler:).md)