[Webkit-unassigned] [Bug 232728] AudioContext.currentTime speeds up (and audio won't play) when Bluetooth speaker connected

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Nov 5 02:01:19 PDT 2021


Gavin Lefebvre <glefebvr at epic.com> changed:

           What    |Removed                     |Added
                 CC|                            |glefebvr at epic.com

--- Comment #2 from Gavin Lefebvre <glefebvr at epic.com> ---
We just started seeing this behavior after releasing our Web Audio-based workaround for quiet WebRTC audio last week and not seeing it AT ALL through the beta process (and this was with intensive testing and focusing on Bluetooth behavior when backgrounding the app, etc to hand off best-effort audio playback by unmuting HTMLAudioElements whenever the AudioContext is not running).

So, while we generally fixed audio for folks who weren't using external devices previously, it seems like we broke it for most others. This issue extends back to earlier 15.0 releases suddenly, as if it were one of those "silent" updates all devices get to address fingerprinting or similar.

We have had some reports of the performance stabilizing if you pair the Bluetooth device after instantiating the AudioContext.

How does Apple & the Safari/WebKit teams intend this to be used? It would be great to see a performant reference application that runs on actual hardware.

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