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MediaStreamTrack.getCapabilities() support for audio device-related constrainable properties.

Category

Multimedia

Type

New or changed feature

Status

Enabled by default (Chrome 75)

Intent stage

None

Summary

Returns the device-related capabilities (namely sample size, sample rate, latency, and channel count) of the source associated to a MediaStreamTrack. There is also a variant InputDeviceInfo.getCapabilities(), available in the results of MediaDevices.enumerateDevices().These devices are used as sources for MediaStreamTrack; in this case, getCapabilities() returns the same values as MediaStreamTrack.getCapabilities() for sampleSize, channelCount, and latency.

Standards & signals

• Specification: https://w3c.github.io/mediacapture-main/#dom-mediastreamtrack-getcapabilities()
• Firefox: No signal
• Safari: Shipped/Shipping
• Web developers: No signals
• Tracking bug: http://crbug.com/731170

Docs: https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack/getCapabilities

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