---
title: byteSource
framework: MediaExtension
role: symbol
role_heading: Instance Property
platforms: [macOS 14.0+]
path: mediaextension/mesamplecursorchunk/bytesource
---

# byteSource

The byte source to use to read the data for the sample.

## Declaration

```swift
var byteSource: MEByteSource { get }
```

## See Also

### Inspecting a chunk

- [chunkStorageRange](mediaextension/mesamplecursorchunk/chunkstoragerange.md)
- [chunkInfo](mediaextension/mesamplecursorchunk/chunkinfo.md)
- [sampleIndexWithinChunk](mediaextension/mesamplecursorchunk/sampleindexwithinchunk.md)