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On OS Mavericks, When i Face Time it lowers the system volume. Like iTunes and the adjustment sounds for volume up, and down, and such. Is there a setting, or preference to stop it from lowering every other volume?

I have been using mavericks for some time now, and i like the upgrade. It's a fantastic improvement to an operating system.


However i've noticed that when i go onto facetime, it dulls EVERY OTHER SOUND.


Like when i want to watch a video on youtube, it doesn't play it on full volume

Or listen to something on itunes, and control the volume myself. It lowers that too.


It lowers everything except the facetime conversation


Is there a setting or ANYTHING to turn that off?

MacBook Pro (15-inch Late 2011), OS X Mavericks (10.9)

Posted on Oct 30, 2013 8:56 PM

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Posted on Nov 11, 2013 7:37 PM

Thanks, but that doesn't fix the issue.


The problem isn't the system sound, it's the fact that facetime reduces everything but itself while in a call. Even when the volume is as high as it can go, and I get the person on facetime to not talk, all system sound is very quiet.


We need a way to prevent facetime from reducing system sound.

56 replies

Mar 27, 2016 5:35 AM in response to JaysITunes645

Hi !


A solution was posted on https://www.reddit.com/r/apple/comments/3o1edo/facetime_on_mac_turns_down_system _volume/

A friend of mine tried it and it seems to work! Also, I think that if you play any music or videos from your end, the person you're talking to on facetime won't hear that as well. So i guess the sounds coming from those don't interfere with the call.


You'll just have to copy paste the code onto Terminal before each facetime call 🙂

User uploaded file

Nov 4, 2016 6:34 AM in response to JaysITunes645

Hi Jay and others in the post,

I don't know if you guys can see this post or if this problem is actually solved, since its from three years ago. But I seem to have found a (sort of) solution to this problem. It is not perfect, but it can help a little bit... at least you can FaceTime and listen to music at the same time.

The "solution" is a bluetooth headphone, and possibly the newest sierra system which added selecting output function. (I am not sure whether choosing output is new in sierra in fact. Did not notice before.)

You connect your headphone, and then you choose the output source of FaceTime as the headphone (in videos - output) then other output as speaker (volume adjust in menu bar - output) (or the other way round). Then you will find that the music playing through speaker resumes to normal volume, and FaceTime through headphone remains the same.

New iTunes also offers an option to change output.


In short, choosing different outputs between FaceTime and other volume.


This is not a smart way though, as one of the sound will have to be played through speaker. But... it is a way anyway.

I do not have other speakers or outputs to test (what I have is a beats solo 2 bluetooth and a normal wire headphone), but I am sure that this works with bluetooth but not wire headphones (because connecting it will change the output option to only headphone).

Hope APPLE CAN GIVE US A REALLY WORKING SOLUTION!

Dec 4, 2016 3:58 AM in response to JaysITunes645

ok, for mavericks you will need to execute the following in you terminal:

printf "p *(char*)(void(*)())AudioDeviceDuck=0xc3\nq" | lldb -n FaceTime


If you don't have lldb (Xcode additions) you will be prompted to install them first.


On Sierra you will have to deactivate the System Integrity Protection first.

To do this, start in recovery mode and execute:

csrutil disable

in terminal over there.

On OS Mavericks, When i Face Time it lowers the system volume. Like iTunes and the adjustment sounds for volume up, and down, and such. Is there a setting, or preference to stop it from lowering every other volume?

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