---
title: "RTCRtpSynchronizationSource | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Interface RTCRtpSynchronizationSource

interface RTCRtpSynchronizationSource {  
    [audioLevel](#audiolevel)?: number;  
    [rtpTimestamp](#rtptimestamp): number;  
    [source](#source): number;  
    [timestamp](#timestamp): number;  
}

#### Hierarchy ([View Summary](https://docs.maptiler.com/sdk-js/api-reference/hierarchy/#Externals.RTCRtpSynchronizationSource))

-   [RTCRtpContributingSource](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpContributingSource/)
    -   RTCRtpSynchronizationSource

##### Index

### Properties[](#properties)

[audioLevel?](#audiolevel) [rtpTimestamp](#rtptimestamp) [source](#source) [timestamp](#timestamp)

## Properties[](#properties-1)

### `Optional`audioLevel[](#audiolevel)

audioLevel?: number

Inherited from [RTCRtpContributingSource](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpContributingSource/).[audioLevel](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpContributingSource/#audiolevel)

### rtpTimestamp[](#rtptimestamp)

rtpTimestamp: number

Inherited from [RTCRtpContributingSource](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpContributingSource/).[rtpTimestamp](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpContributingSource/#rtptimestamp)

### source[](#source)

source: number

Inherited from [RTCRtpContributingSource](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpContributingSource/).[source](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpContributingSource/#source)

### timestamp[](#timestamp)

timestamp: number

Inherited from [RTCRtpContributingSource](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpContributingSource/).[timestamp](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpContributingSource/#timestamp)