Per-app Volume and Chrome

[tmikaeld]

Does not seem to work with Chrome and HTML5 Audio.

[joshuwhi]

This is still an issue 3 years later, bumping.

[kyleneideck]

I just tested this with some YouTube and Vimeo videos (which use HTML5 video) in Chrome 74.0.3729.131 and it worked for me. Unless I can figure out a way to reproduce the problem locally, you might have to install a debug build to get debug logs for this.

When you change Chrome's app volume with a debug build installed, Background Music.app should log a line like this:

BGMAppVolumes::appVolumeChanged: App volume for com.google.Chrome (16054) changed to 50

And when Chrome starts playing audio, the coreaudiod process (which "hosts" BGMDriver) should log a line like this:

BGM_Clients::StartIO: Client 536 (com.google.Chrome, 16054) starting IO

If the bundle ID isn't "com.google.Chrome" in both of those lines, Background Music probably won't realise the two are related and that would explain why the app volume slider isn't working for you. It might also be enough info to fix the problem.

[hahastudio]

I use the debug build 0.2.0-DEBUG-b3b4482 (I didn't find any new debug build) to get log.

From the log:

default 22:23:07.900669 +0800 coreaudiod BGM_Clients::StartIO: Client 168 (com.google.Chrome.helper, 1701) starting IO
default 22:24:29.629361 +0800 Background Music BGMAppVolumes::appVolumeChanged: App volume for com.google.Chrome (1632) changed to 77

From the log, it seems that Chrome uses a different process (Google Chrome Helper) to play audio.

Chrome 76.0.3809.100
macOS Mojave 10.14.6 (18G84)

[qroniq]

I'm also noticing this issue.

Chrome 78.0.3904.108
macOS 10.14.6 (18G1012)

I've subscribed to this thread.. happy to beta test etc :)

Cheers!