---
title: "init(chunkSampleCount:chunkHasUniformSampleSizes:chunkHasUniformSampleDurations:chunkHasUniformFormatDescriptions:)"
framework: avfoundation
role: symbol
role_heading: Initializer
path: "avfoundation/avsamplecursorchunkinfo/init(chunksamplecount:chunkhasuniformsamplesizes:chunkhasuniformsampledurations:chunkhasuniformformatdescriptions:)"
---

# init(chunkSampleCount:chunkHasUniformSampleSizes:chunkHasUniformSampleDurations:chunkHasUniformFormatDescriptions:)

Creates a chunk information structure with the specified values.

## Declaration

```swift
init(chunkSampleCount: Int64, chunkHasUniformSampleSizes: ObjCBool, chunkHasUniformSampleDurations: ObjCBool, chunkHasUniformFormatDescriptions: ObjCBool)
```

## Parameters

- `chunkSampleCount`: The count of media samples in the chunk.
- `chunkHasUniformSampleSizes`: The samples in the chunk occupy the same number of bytes in storage.
- `chunkHasUniformSampleDurations`: The samples in the chunk have the same duration.
- `chunkHasUniformFormatDescriptions`: The samples in the chunk have the same format description.