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# AVMIDIMetaEvent

An object that represents MIDI meta event messages.

```
class AVMIDIMetaEvent
```

## Overview

You can’t modify the size and contents of this event once you create it. This doesn’t verify that the content matches the MIDI specification.

You can only add [`AVMIDIMetaEvent.EventType.tempo`](/documentation/AVFAudio/AVMIDIMetaEvent/EventType/tempo), [`AVMIDIMetaEvent.EventType.smpteOffset`](/documentation/AVFAudio/AVMIDIMetaEvent/EventType/smpteOffset), or [`AVMIDIMetaEvent.EventType.timeSignature`](/documentation/AVFAudio/AVMIDIMetaEvent/EventType/timeSignature) to a sequence’s tempo track.

## Topics

### Creating a Meta Event

[`init(type:data:)`](/documentation/AVFAudio/AVMIDIMetaEvent/init(type:data:))

Creates an event with a MIDI meta event type and data.

### Getting the Meta Event Type

[`type`](/documentation/AVFAudio/AVMIDIMetaEvent/type)

The type of meta event.

[`AVMIDIMetaEvent.EventType`](/documentation/AVFAudio/AVMIDIMetaEvent/EventType)

Constants that represent the types of meta events.


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