---
title: refinementDataLocation
framework: MediaExtension
role: symbol
role_heading: Instance Property
platforms: [macOS 14.0+]
path: mediaextension/meestimatedsamplelocation/refinementdatalocation
---

# refinementDataLocation

The starting file offset and size in bytes of the data necessary to provide an accurate sample location.

## Declaration

```swift
var refinementDataLocation: AVSampleCursorStorageRange { get }
```

## Discussion

Discussion Pass this refinement data to the refineSampleLocation(_:refinementData:refinementDataLength:refinedLocation:) to determine the exact sample location.

## See Also

### Inspecting an estimated sample location

- [byteSource](mediaextension/meestimatedsamplelocation/bytesource.md)
- [estimatedSampleLocation](mediaextension/meestimatedsamplelocation/estimatedsamplelocation.md)