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# ConstraintFallbackEvent

> Event emitted when getUserMedia falls back to looser constraints.

Event emitted when getUserMedia falls back to looser constraints.

## **Properties**

The device that the browser actually provided. See [`MediaDeviceInfo`](https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo).

The constraint level that succeeded.

The kind of input device.

The device that was originally requested. See [`MediaDeviceInfo`](https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo).