BlackHole

The unsung hero of Blackhole is the ability to easily build a new one, meaning you can have infinite sets of audio devices with custom names. https://github.com/ExistentialAudio/BlackHole/wiki/Build-wit... Just change around some variables: `kDevice_Name`, `Manufacturer_Name`, `kPlugIn_BundleID`, `kBox_UID`, `kDevice_UID`, `kDevice_ModelUID`, and then the Blackhole.driver folder it spits out after build. You can also go up to 16 (or more?) channels instead of the stock 2, which is great for multiple participants in a jacktrip session, among other things. https://github.com/ExistentialAudio/BlackHole/wiki/Change-th... That one is slightly out of date. The new variable name is `kNumber_Of_Channels` for number of channels. You can have a dedicated Blackhole audio device for each thing you want to mix and then stitch them together into an agg

Your question seems to be covered here with some limitations. https://github.com/ExistentialAudio/BlackHole/wiki/Multi-Out...

It's a vanilla loopback Audio Server Plugin implementation, which is a userspace audio driver mechanism on macOS. Soundflower is an actual kernel-space driver using IOKit, which is the older (and deprecated) way of achieving the same thing. The actual work is done in a few dozen lines of code (see BlackHole_DoIOOperation at https://github.com/ExistentialAudio/BlackHole/blob/master/Bl...). The rest is just setting up the object model for the OS to provide metadata about the device.

> Wanna record your desktop audio as part of a screencast? It doesn't have to be a screencast, it's kind of a convoluted process regardless of which operating system you're using [1]. If I'm not mistaken OBS is using the built-in virtual loopback devices available through pulseaudio, but MacOS does not include a virtual loopback device by default, hence requiring a third party one such as Blackhole or loopback. > ...and often involves shady stuff ...what shady stuff are we talking about here? Blackhole [2] is open source software. It's about as shady as any of the (several) linux audio systems. [1] https://en.wikipedia.org/wiki/Loopback [2] https://github.com/ExistentialAudio/BlackHole

You can use [BlackHole](https://github.com/ExistentialAudio/BlackHole) for that, which is open-source, GPL-3. I do, it works, it’s great.

If you want to record your Terminal output, here's a helpful answer: https://unix.stackexchange.com/questions/396123/how-to-recor... This will let you record from your built-in microphone. If you want to record direct output, download Blackhole and route the audio through the virtual device: https://github.com/ExistentialAudio/BlackHole Audio quality will need a bit of tweaking with gain.