---
title: "RTCTrackEventInit | 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 RTCTrackEventInit

interface RTCTrackEventInit {  
    [bubbles](#bubbles)?: boolean;  
    [cancelable](#cancelable)?: boolean;  
    [composed](#composed)?: boolean;  
    [receiver](#receiver): [RTCRtpReceiver](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpReceiver/);  
    [streams](#streams)?: [MediaStream](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.MediaStream/)\[\];  
    [track](#track): [MediaStreamTrack](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.MediaStreamTrack/);  
    [transceiver](#transceiver): [RTCRtpTransceiver](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCRtpTransceiver/);  
}

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

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

##### Index

### Properties[](#properties)

[bubbles?](#bubbles) [cancelable?](#cancelable) [composed?](#composed) [receiver](#receiver) [streams?](#streams) [track](#track) [transceiver](#transceiver)

## Properties[](#properties-1)

### `Optional`bubbles[](#bubbles)

bubbles?: boolean

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

### `Optional`cancelable[](#cancelable)

cancelable?: boolean

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

### `Optional`composed[](#composed)

composed?: boolean

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

### receiver[](#receiver)

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

### `Optional`streams[](#streams)

streams?: [MediaStream](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.MediaStream/)\[\]

### track[](#track)

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

### transceiver[](#transceiver)

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