---
title: CMSampleBuffer.SamplePropertiesCollection
framework: coremedia
role: symbol
role_heading: Structure
path: coremedia/cmsamplebuffer/samplepropertiescollection
---

# CMSampleBuffer.SamplePropertiesCollection

Fixed size collection of sample information.

## Declaration

```swift
struct SamplePropertiesCollection
```

## Overview

Overview This collection contains one element for each sample in the sample buffer. The size of collection is fixed to the number of samples in a sample buffer. Convenience static methods are available on timings & sizes to create this collection by specifying just one value.

## Topics

### Initializers

- [init()](coremedia/cmsamplebuffer/samplepropertiescollection/init().md)
- [init(_:)](coremedia/cmsamplebuffer/samplepropertiescollection/init(_:).md)
- [init(sampleCount:sizes:timings:attachments:)](coremedia/cmsamplebuffer/samplepropertiescollection/init(samplecount:sizes:timings:attachments:).md)

### Instance Properties

- [attachments](coremedia/cmsamplebuffer/samplepropertiescollection/attachments.md)
- [count](coremedia/cmsamplebuffer/samplepropertiescollection/count.md)
- [endIndex](coremedia/cmsamplebuffer/samplepropertiescollection/endindex.md)
- [sizes](coremedia/cmsamplebuffer/samplepropertiescollection/sizes.md)
- [startIndex](coremedia/cmsamplebuffer/samplepropertiescollection/startindex.md)
- [timings](coremedia/cmsamplebuffer/samplepropertiescollection/timings.md)

### Subscripts

- [subscript(_:)](coremedia/cmsamplebuffer/samplepropertiescollection/subscript(_:).md)

## Relationships

### Conforms To

- [BidirectionalCollection](swift/bidirectionalcollection.md)
- [Collection](swift/collection.md)
- [Copyable](swift/copyable.md)
- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [ExpressibleByArrayLiteral](swift/expressiblebyarrayliteral.md)
- [MutableCollection](swift/mutablecollection.md)
- [RandomAccessCollection](swift/randomaccesscollection.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)
- [Sequence](swift/sequence.md)