This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2022.
The channels property of the RTCCodecStats dictionary is a positive number containing the number of channels supported by the codec.
For audio codecs, a value of 1 specifies monaural sound while 2 indicates stereo.
A positive number indicating the number of channels.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
channels |
83 | 83 | 98 | 69 | 14.1 | 83 | 98 | 59 | 14.5 | 13.0 | 83 | 14.5 |
codecs.channels option in parameter passed to RTCRtpTransceiver.setCodecPreferences() and RTCRtpSender.setParameters().codecs.channels in object returned by RTCRtpSender.getParameters() and RTCRtpReceiver.getParameters().
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https://developer.mozilla.org/en-US/docs/Web/API/RTCCodecStats/channels