Jul 28, 2018 How to Uninstall Soundflower. Unlike other Mac’s app, you won’t find Soundflower in your Application folder. Instead, to uninstall Soundflower, just run the Uninstall Soundflower.scpt present in Soundflower folder. If you don’t have it, you can download it from the link above. Also Read: How to Connect USB Mic to Smartphone for Video. Jul 30, 2019 Also, I an unable to remove Soundflower from the sound preferences. Can anyone point me to the correct way to delete Soundflower for Mac?” As an open source kernel extension developed by Rogue Amoeba Software for MacOS, Soundflower is designed to create a virtual audio output device that can also act as an input. In the Soundflower 'Tools' folder there is a Ruby script called 'load.rb' which will copy the built kext into the install location using sudo. This sets the owner and group correctly. When you run the 'build.rb' script it builds the project with Xcode and then runs the 'load.rb' script automatically.
Buildingdesktop applications used to be tedious in the past. With each platform havingits own programming language, and a different way of doing things. Windows,Mac, Linux… We used to have java with “Swing” which was great and crossplatform, but building apps with this was not really fast. Then JavaFXcame which was better. But nowadays, we have awesome tools which allows us toleverage the power and ease of use of web technologies to build desktop apps.Electron provides us such capabilities and what is awesome, is that it is crossplatform. Pixelmon for mac.
Recently, we’vehad a situation where I needed to record system sound on a mac alongside videoto channel the resulting stream over WebRTC. The application was adesktop app, and obviously built with electron. And as most of you might know,electron apps run chromium and leverages web technologies to build desktopapps.
The Problem: How to Record System Sound on MacOS?
To stream adesktop in real-time with audio and video on electron, you will need the “desktopCapturer”.Then, precise constraints as required by Electron. Though this approach will work on Windows, itwill not work on MacOS. MacOS will simply not allow the system audio tobe captured, but has no problem with allowing the video stream afterpermissions are granted. This is a bug that has been present for years now,this post is about how to handle this issue.
This is aknown issue and while searching, I came across several complaints about thisissue. Some date back to a few years ago. Here you can find an open issue about Chrome notproviding a possible means of recording system audio without external drivers.This report dates back to 2016, now as I’m writing this, we are in 2019. Diggingdeeper into this, I found that it was due to MacOS. The operating system didn’tallow system sound to be captured by default.
In myopinion, the fact that there is no proper solution to this is because thenumber of developers who need to implement system audio capture functionality intoelectron apps is not really significant. I also think it is important tohighlight a point about various solutions to this issue found online. Most ofthe solutions I’ve seen developers bring up, were hacks which aimed at mixingtwo streams from different sources and mixing them. That is, capturingvideo from the desktop, capturing audio from the microphone. Then mixing both. This is an example of what I’m talking about.Though this is the approach we are using in this post, we will get video andaudio streams both from the system.
The Solution
Aftertrying a bunch of possible solutions, we finally came across a final solution.Though it requires a fairly complex installation of third-party software, itworks and permits us to record system sound on MacOS. Let’s dive in.
![Soundflower For Mac Soundflower For Mac](/uploads/1/3/4/0/134049460/921952470.jpg)
Installing Sound flower:
Sound Floweris an extension to the MacOS kernel, it is open source and it’s made to createa virtual audio output device on MacOS. To install soundflower, you need tofollow these instructions. I recommend you follow theinstructions attentively till the end. Because, after installation, you have tosetup the software so as to enable it to capture MacOS audio.
After the installation of SoundFlower Silverlight updates for mac. , you can notice with your JavaScript that new audio output devices appear in the OS. As you can see below. The audio output device highlighted is the one we are interested in, and which we will use to record sound system on macOS.
Record System Sound on MacOS with Video
Here arethe steps we will use to record the system sound.
- Getevery media device on the computer
- Filterthese media devices and get only the sound flower audio output device wehighlighted above,
- Extractthe audio stream from the sunflower virtual device we filtered out.
- Atthis point, you have succeeded in recording system audio on MacOS, but we willadd Video to it.
- Extractthe video stream
- Mixthe Video stream with the previous audio stream
- Getthe resulting stream and perform what ever you want with it.
Here is thecode performing the steps I mentioned above:
You might be interested by this post about building offline web applications with Javascript using Service Workers and IndexDB. Diablo for mac.
Conclusion
We have seen how to record video, alongside system sound on MacOS with Javascript. Though this method works well, you can tweak it so that it get’s only sound or so it does whatever you want. If you have a method which is more efficient in recording sound and video in with JavasScript, please share in the comments section.