Contact emails
ev...@google.com

Explainer
https://github.com/WICG/speech-api/pull/118


Specification
https://wicg.github.io/speech-api


Design docs

https://docs.google.com/document/d/1LHGtO6A-U4OFQpG9LXUf1_4Elerpv1rncNCbHnmA7zY/edit?usp=sharing


Summary

Add MediaStreamTrack support to the Web Speech API. The Web Speech API is a web 
standard API that allows developers to incorporate speech recognition and 
synthesis into their web pages. Currently, the Web Speech API uses the user's 
default microphone as the audio input. MediaStreamTrack support allows websites 
to use the Web Speech API to caption other sources of audio including remote 
audio tracks.



Blink component
Blink>Speech


Search tags
speech, recognition


TAG review
None


TAG review status
Not applicable


Risks




Interoperability and Compatibility

None


Gecko: Positive (https://github.com/WICG/speech-api/issues/66) Similar changes 
proposed by Firefox in 2019

WebKit: Positive (https://www.w3.org/Bugs/Public/show_bug.cgi?id=26336) Similar 
changes proposed by Safari in 2014

Web developers: Positive 
(https://stackoverflow.com/questions/67351357/web-speech-recognition-on-mediastream)
 Feature requested by web developers

Other signals:


WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it 
has potentially high risk for Android WebView-based applications?

None




Debuggability

None



Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, 
ChromeOS, Android, and Android WebView)?
No
Initially supported on Windows, Mac, and Linux with ChromeOS support to follow.



Is this feature fully tested by web-platform-tests?
No


Flag name on about://flags
None


Finch feature name
MediaStreamTrackWebSpeech


Requires code in //chrome?
False


Estimated milestones


Shipping on desktop 133




Anticipated spec changes

Open questions about a feature may be a source of future web compat or interop 
issues. Please list open issues (eg links to known github issues in the project 
for the feature specification) whose resolution may introduce web 
compat/interop risk (eg, changing to naming or structure of the API in a 
non-backward-compatible way).
Spec changes will be made to the Web Speech API spec after the spec repo 
migrates over to the Audio Community Group. Tentative spec PR changes: 
https://github.com/WICG/speech-api/pull/118


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5178378197139456?gate=5091779878846464


This intent message was generated by Chrome Platform Status.

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