http://jackaudio.org/
http://jackosx.com/

there are 3 approaches to inter-application audio on OS X, maybe 4
with more recent versions of OS X.

* kernel driver
* coreaudio server plugin
* coreaudio userspace device
* HAL plugin

they each have pros and cons.



On Wed, Jul 29, 2015 at 4:37 AM, Roman <[email protected]> wrote:
> Hi guys,
>
> There is an app named Hijack that can record audio from an application. It
> records audio being played by the specified app only omitting system sounds
> and sounds from other applications. I tested it with Chrome and iTunes, it
> works fine, it lets to switch between recording from iTunes/Chrome
> on-the-fly. For Safari it requires to install their additional driver named
> "Instant On”. It is installed into /Library/Audio/Plug-Ins/HAL/ folder.
> Without Instant On installed recording from Chrome requires to restart
> Chrome if it is started before Hijack.
> There is no any additional devices in the list of audio devices in System
> Preferences so I’m pretty sure they don’t use Soundflower or at least don’t
> use it as is.
> I googled but didn’t find any other way to record audio in OSX except using
> Soundflower.
>
> Does anybody have any ideas what technologies they use? I will appreciate
> any thoughts.
>
>
> Thanks,
> Roman
>
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