# Introduction to Mux Data

Mux Data gives you insight into video engagement and Quality of Experience using client-side SDKs for your player.

### Get Started

#### Track your video engagement and performance

Integrate an SDK to start tracking video views.

[HTML5 Video](/content/docs/guides/monitor-html5-video-element/index.html)  [HLS.js](/content/docs/guides/monitor-hls-js/index.html)   [Video.js](/content/docs/guides/monitor-video-js/index.html)  [React Native Video](/content/docs/guides/monitor-react-native-video/index.html)   [AVPlayer](/content/docs/guides/monitor-avplayer/index.html)  [ExoPlayer](/content/docs/guides/monitor-exoplayer/index.html)

See all our supported SDKs for: [Web](/content/docs/guides/track-your-video-performance?category=Web/index.html) [iOS](/content/docs/guides/track-your-video-performance?category=iOS/index.html) [Android](/content/docs/guides/track-your-video-performance?category=Android/index.html) [TV](/content/docs/guides/track-your-video-performance?category=TV/index.html)

### Learn More

#### Understand metric definitions

Understand the playback metrics Mux uses to measure viewership and quality of experience.

[Read the guide](/content/docs/guides/understand-metric-definitions/index.html)

#### Make your data actionable with metadata

Configure metadata with your SDK in order to search, filter and segment your video performance metrics.

[Read the guide](/content/docs/guides/make-your-data-actionable-with-metadata/index.html)

#### Show how many people are watching your videos

Learn how to get the latest view and unique viewer counts for a video.

[Read the guide](/content/docs/guides/see-how-many-people-are-watching/index.html)

#### Track playing time by rendition

See how much time viewers spend watching each video quality level, and use it to optimize your encoding ladder.

[Read the guide](/content/docs/guides/playing-time-by-rendition/index.html)