It's not clear if/what is a modern alternative. The macOS SDK used to have an API called CoreMediaIO, which might have been the way to expose a virtual camera, but this API was also deprecated. It uses Quartz Composer for implementing effects, but Quartz Composer was deprecated by Apple and it's probably living its last days in Catalina. Unfortunately, CamTwist is rather old and not well maintained. I got it running on my macOS Catalina, applied some of its builtin effects on my camera stream, and saw it show up as a new camera in my Hangouts settings (after restarting Chrome). It will work if SIP is disabled, but that's a terrible idea and I'm not going to suggest or help anyone do that."įortunately, CamTwist works. Trying to inject into any process will silently fail. Apple closed up the loophole that allows scripting additions in global directories to load into any process. Unfortunately, Syphon doesn't expose a virtual camera anymore: "SyphonInject NO LONGER WORKS IN macOS 10.14 (Mojave). In discussions about this ( thread, thread), folks talk about a tool called Syphon and a tool called CamTwist. However, there is no functionality to expose the stream as a virtual camera on macOS. It captures input from different sources (camera, desktop, etc.), has a plugin system for applying effects, and then streams the output to popular services (e.g. There's a popular tool in the live streaming community called OBS Studio. I'm hoping this question will collect advice/links/ideas in the right direction for how to do this as of 2020. here, here), but they are either unanswered or very old. This allows me to slightly blur (bokeh) the details in the background image while leaving the foreground webcam image in sharp focus. There are a few similar questions on StackOverflow (e.g. One of the features that I miss the most from CamTwist is the ability to add an adjustable blur layer between the background image layer and chroma key’ed webcam layer. I've spent many hours researching how to do this and I'm still not clear if it's even possible with modern macOS APIs. This virtual camera could then be selected in whichever videochat application. The way I imagine this working is to write a macOS application that reads the camera feed, applies my filters, and exposes an additional virtual camera. You’ll have to select the application as the video driver in your video streaming app in order to broadcast the CamTwist video feed, along with all the effects you applied, over the Internet.I want to write my own camera filters for videochat, and ideally apply them in any/all of the popular videochat applications (Zoom, Hangouts, Skype, etc.). You can launch various transition and set their duration from the drop down effects menu.ĬamTwist supports a variety of video sources besides the webcam and you can use it to broadcast the entire desktop or just an area, but also windows of certain apps, movies, slideshows and even a Flickr set among others. In the Studio window you can define buttons, each with its own action which can be used to quickly apply effects with just a click. To see the result you’ll have to open the Preview window. In the Effects window you can define the video source, preview the video effects as well as edit and save setups. The program has two main work areas – the Effects window and the Studio window. CamTwist: A feature-rich application that lets you produce Internet streaming shows on your MacĬamTwist is an intuitive application for Apple computers that lets you easily produce amazing looking shows as it bundles a large number of video effects you can apply to your camera feed.
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