This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2017.
The kind read-only property of the MediaStreamTrack interface returns a string set to "audio" if the track is an audio track and to "video" if it is a video track. It doesn't change if the track is disassociated from its source.
The possible values are a string with one of the following values:
"audio": the track is an audio track."video": the track is a video track.| Specification |
|---|
| Media Capture and Streams> # dom-mediastreamtrack-kind> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
kind |
26 | 12 | 22 | 15 | 11 | 26 | 22 | 14 | 11 | 1.5 | 4.4 | 11 |
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https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack/kind