# Call Statistics

There are two sources of statistics you can use to monitor the performance of your calls:

- `Call.stats` stream that provides real-time webRTC statistics
- `CallState` properties that contain some of the webRTC statistics processed and more useful for display purposes

## Stats stream

If you want to tap in directly into the stream of webRTC stats you can do this with `stats` stream inside `Call` object. It provides a stream of [`CallStats`](https://github.com/GetStream/stream-video-flutter/blob/main/packages/stream_video/lib/src/models/call_stats.dart) objects for publisher and subscriber connections.
We provide those statistics in three ways for ease of use:

- `raw` - Raw stats as they come from WebRTC.
- `printable` - Representation of the stats that can be easily printed to the console or as a block of text.
- `stats` - WebRTC stats but in a structured form.

## CallState properties

You can also access more processed data with useful information about the call. This data is available in [`CallState`](https://github.com/GetStream/stream-video-flutter/blob/main/packages/stream_video/lib/src/call_state.dart) object. Here are some of the properties that you can use:

`publisherStats` and `subscriberStats` - objects that contain the following data:

- `latency` - The time it takes to deliver the data between the server and the app.
- `jitterInMs` - The variation in the delay of receiving packets of data over a network.
- `bitrateKbps` - The rate at which data is transmitted from the app to the server (publisher) or from the server to the app (subscriber).

`localStats` - An object that contains the following data:

- `sfu` - The server to which the device is connected.
- `sdkVersion` - The version of the Stream SDK.
- `webRtcVersion` - The version of WebRTC.

`latencyHistory` - Array of latency values for the last 10 seconds.

## Example usage

You can check the example of the stats screen in our [demo app](https://github.com/GetStream/stream-video-flutter/blob/main/dogfooding/lib/screens/call_stats_screen.dart)

![Sample Call Stats screen](@video/flutter/_assets/core_concepts/stats_screen.jpeg)


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This page was last updated at 2026-07-10T16:05:21.869Z.

For the most recent version of this documentation, visit [https://getstream.io/video/docs/flutter/guides/call-statistics/](https://getstream.io/video/docs/flutter/guides/call-statistics/).