---
title: Media agent for HTML5 v4.1.1
source: https://docs.newrelic.com/docs/release-notes/streaming-browser-release-notes/streaming-browser-agent-html5-26-07-02
---

## What's changed

### Documentation

-   **README Overhaul:** Restructured and expanded README with comprehensive installation guides, usage examples, best practices, configuration options, API reference, and support channels.

### Improvements

-   **Attributes Validation:** Updated validation logic for custom attributes to enforce correctness at the tracker level.
-   **Custom Attributes Limit:** Added an enforced limit on the number of custom attributes that can be sent per event, preventing unexpected payload sizes.

## Installation

```bash
npm install @newrelic/video-html5@4.1.1
```

[Full changelog](https://github.com/newrelic/video-html5-js/blob/master/CHANGELOG.md#411---2026-04-17)