[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

--- Comment #21 from neo <neo.jung at minischool.co.kr> ---
(In reply to Phong Le from comment #20)
> (In reply to neo from comment #18)
> > (In reply to Phong Le from comment #16)
> > > Could you guide about how to use AudioContext to play this remote stream? I
> > > researched and when using AudioContext to play, we must attach with an audio
> > > element. Thanks
> > 
> > i tested iOS 15. (wkWebview)
> > 
> > // audio stream example
> >  function connectToSpeaker(remoteAudioStream: MediaStream, gain: number) {
> >     const context: AudioContext = window.AudioContext ||
> > window.webkitAudioContext;
> >     const audioNode = context.createMediaStreamSource(remoteAudioStream);
> >     const gainNode: GainNode = context.createGain();
> >     // some device volume too low ex) iPad
> >     gainNode.gain.value = gain;
> >     audioNode.connect(gainNode);
> >     gainNode.connect(context.destination);
> >   } 
> > 
> > and i'm not append video(with audio) element to document body. 
> > i use canvas.
> 
> Wow, it works :) Thanks for sharing. Before, I tested this one on MacOS
> Safari but not work. Only work on iOS device :). I set gain 4 to iPhone and
> 2 to iPad.  The <audio> and <video> tag (play file by url not remote stream)
> is still very low volume

still very low volume <== it'll be ok if use audio context for playing audio file.

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