---
title: kCVPixelBufferPoolMaximumBufferAgeKey
framework: corevideo
role: symbol
role_heading: Global Variable
path: corevideo/kcvpixelbufferpoolmaximumbufferagekey
---

# kCVPixelBufferPoolMaximumBufferAgeKey

The key you use to set the maximum allowable age for a buffer in the pixel buffer pool.

## Declaration

```swift
let kCVPixelBufferPoolMaximumBufferAgeKey: CFString
```

## Discussion

Discussion This value for this key is of type CFAbsoluteTime.

## See Also

### Constants

- [kCVPixelBufferPoolMinimumBufferCountKey](corevideo/kcvpixelbufferpoolminimumbuffercountkey.md)
- [kCVPixelBufferPoolAllocationThresholdKey](corevideo/kcvpixelbufferpoolallocationthresholdkey.md)