<!--
{
  "availability" : [
    "iOS: -",
    "iPadOS: -",
    "macCatalyst: -",
    "macOS: -",
    "tvOS: -",
    "visionOS: -",
    "watchOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "CoreMIDI",
  "identifier" : "/documentation/CoreMIDI/MIDIEventPacket",
  "metadataVersion" : "0.1.0",
  "role" : "Structure",
  "symbol" : {
    "kind" : "Structure",
    "modules" : [
      "Core MIDI"
    ],
    "preciseIdentifier" : "c:@S@MIDIEventPacket"
  },
  "title" : "MIDIEventPacket"
}
-->

# MIDIEventPacket

A series of simultaneous MIDI events in Universal MIDI Packets (UMP) format.

```
struct MIDIEventPacket
```

## Topics

### Configuring an Event Packet

[`timeStamp`](/documentation/CoreMIDI/MIDIEventPacket/timeStamp)

The event packet timestamp.

[`wordCount`](/documentation/CoreMIDI/MIDIEventPacket/wordCount)

The number of valid MIDI 32-bit words in this event packet.

[`words`](/documentation/CoreMIDI/MIDIEventPacket/words)

A variable-length stream of native-endian 32-bit Universal MIDI Packets (UMP).



---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)