# opusPacketDurationUs

URL: https://www.caprid.com/docs/reference/typescript/caprid/moq-media/functions/opuspacketdurationus/

```ts
function opusPacketDurationUs(packet): number | undefined;
```

Defined in: [audio-player.ts:384](https://github.com/caprids/relay-sdks/blob/main/ts/packages/moq-media/src/audio-player.ts#L384)

How long an Opus packet plays, in microseconds, from its TOC byte (RFC 6716 §3.1); `undefined` when it cannot be
read.

## Parameters

| Parameter | Type |
| ------ | ------ |
| `packet` | `Uint8Array` |

## Returns

`number` \| `undefined`