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# TVPlaybackEventMarshaling

A protocol used for sending and receiving information across the JavaScript bridge.

```
protocol TVPlaybackEventMarshaling : NSObjectProtocol
```

## Overview

You must conform to this protocol in order to pass custom events.

## Topics

### Processing Playback Events

[`processReturnValue(value:in:)`](/documentation/TVMLKit/TVPlaybackEventMarshaling/processReturnValue(value:in:))

Converts a JavaScript value into a value that is readable in Swift or Objective-C.

[`properties`](/documentation/TVMLKit/TVPlaybackEventMarshaling/properties)

An array of custom playback event properties.

[`TVPlaybackEventProperty`](/documentation/TVMLKit/TVPlaybackEventProperty)

Extend this structure to create your own custom playback event properties.


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