[Webkit-unassigned] [Bug 230902] REGRESSION(Safari 15 - iOS15): [WebRTC] MediaStreamTack audio volume too low

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=230902

Eliel Cohen <eliel.cohen at gmail.com> changed:

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                 CC|                            |eliel.cohen at gmail.com

--- Comment #7 from Eliel Cohen <eliel.cohen at gmail.com> ---
Hi Everyone,

Where I work we also suffer from this, therefore I have been investigating on my side this issue, by the way it's not that the audio volume is low, but that the audio output is the earpiece and not the speaker anymore to my opinion.

Now I have got some interesting finding that could guide Apple engineers in solving this, basically I've found out that if I open a new tab (with some audio tag inside, but it could be not mandatory), as long as the new tab is on a different domain, then it will put back the audio back to the speaker at normal volume, and going back to the tab where the Webrtc call happens will not reproduce the low volume/earpiece output issue.

Please note, that using an iframe, won't solve it, and using a same domain url for the new tab, won't also solve it.

Other finding, using Chrome application (which relies of course on WKWebView) will reproduce the issue, but there, simply going to the tab view will solve the audio issue, and we can then go back to the tab where the Webrtc call takes place.

At last, please note that sometime, these two solutions can deliver a mix solution, meaning that some rare time, it did create a state where the audio will go through the earpiece (low volume) for half a second, then through the speaker for half a sec, and so on continuously...

Hope my findings will help someone :)

Thanks,

Eliel

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