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# MPMusicPlayerMediaItemQueueDescriptor

A set of properties and methods for modifying audio media items in the player’s media queue.

```
class MPMusicPlayerMediaItemQueueDescriptor
```

## Overview

Use this class to modify the player queue created by a query before the queue begins to play. You can modify when individual items start and stop playing, along with setting the first item to play.

## Topics

### Creating a new media item queue descriptor

[`-  initWithItemCollection:`](/documentation/MediaPlayer/MPMusicPlayerMediaItemQueueDescriptor/init(itemCollection:))

Creates a new queue descriptor using the designated collection.

[`-  initWithQuery:`](/documentation/MediaPlayer/MPMusicPlayerMediaItemQueueDescriptor/init(query:))

Creates a new queue descriptor using the designated query.

### Media item queue descriptor properties

[`itemCollection`](/documentation/MediaPlayer/MPMusicPlayerMediaItemQueueDescriptor/itemCollection)

Contains the media item collection used to create the queue descriptor.

[`query`](/documentation/MediaPlayer/MPMusicPlayerMediaItemQueueDescriptor/query)

Contains the media items found by the query used to create the queue descriptor.

[`startItem`](/documentation/MediaPlayer/MPMusicPlayerMediaItemQueueDescriptor/startItem)

Designates the media item to play first.

### Setting start and end times

[`-  setStartTime:forItem:`](/documentation/MediaPlayer/MPMusicPlayerMediaItemQueueDescriptor/setStartTime(_:for:))

The time the designated media item is to start playing.

[`-  setEndTime:forItem:`](/documentation/MediaPlayer/MPMusicPlayerMediaItemQueueDescriptor/setEndTime(_:for:))

The time the designated media item is to stop playing.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`CVarArg`](/documentation/Swift/CVarArg)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`Hashable`](/documentation/Swift/Hashable)

### Inherits From

[`MPMusicPlayerQueueDescriptor`](/documentation/MediaPlayer/MPMusicPlayerQueueDescriptor)

---

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