# Video Stream Authentication

### Overview of video authentication flow

![](https://4279376331-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FRELcBiYu2NQ4Ah1xUT8c%2Fuploads%2Fgit-blob-bea1c65bf8edd1236fb13eebbe845f6e82e88269%2FScreenshot%202020-06-30%20at%2000.53.49.png?alt=media)

An operator can set parameters when initialising the event centre to enable or disable video in the UI. The message displayed to users can be configured in advance.

```
frontRowSeat.eventCentre({
  ..
  options: {
    videoPlaybackEnabled: true/false
  }
)
```

it would also be possible to update this value at runtime

```
.emit(OptionsUpdate: {
  videoPlaybackEnabled: true/false
})
```

When a user presses play the event-centre will emit a message requesting the operator to authenticate the video playback.

```
.on(VideoPlaybackAuthRequest, {
  messageType: 'VideoPlaybackAuthRequest'
})
```

The operator should respond with the auth token using the existing guidelines described in [IMG ALC Streaming documentation](https://docs.sportradar.com/pfl-integration/readme/broken-reference). It is important that the operatorId, and timestamp match those used to create the token.

```
.emit(VideoPlaybackAuthResponse, {
  messageType: 'VideoPlaybackAuthResponse',
  operatorId: '<OPERATOR-ALC-ID>'.
  auth: '<OPERATOR-ALC-TOKEN>',
  timestamp: 1576339325918
})
```