---
title: AVMetricEventStreamPublisher
framework: avfoundation
role: symbol
role_heading: Protocol
path: avfoundation/avmetriceventstreampublisher
---

# AVMetricEventStreamPublisher

A type for objects that publish metric events to the event stream.

## Declaration

```swift
protocol AVMetricEventStreamPublisher
```

## Topics

### Getting the metrics

- [allMetrics()](avfoundation/avmetriceventstreampublisher/allmetrics().md)
- [metrics(forType:)](avfoundation/avmetriceventstreampublisher/metrics(fortype:).md)

## Relationships

### Conforming Types

- [AVPlayerItem](avfoundation/avplayeritem.md)

## See Also

### Metrics

- [AVMetrics](avfoundation/avmetrics.md)
- [AVMergedMetrics](avfoundation/avmergedmetrics.md)
- [AVVideoPerformanceMetrics](avfoundation/avvideoperformancemetrics.md)
- [AVMetricEvent](avfoundation/avmetricevent.md)
- [AVMetricErrorEvent](avfoundation/avmetricerrorevent.md)
- [Metric event types](avfoundation/metric-event-types.md)