facingMode property is a
DOMString indicating the direction in which the camera producing the video track represented by the
MediaStreamTrack is currently facing. This lets you determine what value was selected to comply with your specified constraints for this property's value as described in the
MediaTrackConstraints.facingMode property you provided when calling either
If needed, you can determine whether or not this constraint is supported by checking the value of
MediaTrackSupportedConstraints.facingMode as returned by a call to
MediaDevices.getSupportedConstraints(). However, typically this is unnecessary since browsers will simply ignore any constraints they're unfamiliar with.
var facingMode = MediaTrackSettings.facingMode;
The following strings are permitted values for the facing mode. These may represent separate cameras, or they may represent directions in which an adjustable camera can be pointed.
- The video source is facing toward the user; this includes, for example, the front-facing camera on a smartphone.
- The video source is facing away from the user, thereby viewing their environment. This is the back camera on a smartphone.
- The video source is facing toward the user but to their left, such as a camera aimed toward the user but over their left shoulder.
- The video source is facing toward the user but to their right, such as a camera aimed toward the user but over their right shoulder.
|Media Capture and Streams
The definition of 'facingMode' in that specification.
|Candidate Recommendation||Initial specification.|
|Feature||Android webview||Chrome for Android||Edge mobile||Firefox for Android||Opera Android||iOS Safari||Samsung Internet|