If the option isn’t available to on then, you can go to the Settings menu of the app and enable the Screen Recording feature

Tap on the Screen Mirroring button from the app.

Launch the app and select the Mac device to connect.

After that, the next step is to connect the Mac with Roku TV

Make sure both all the devices are connected to the same WIFI network.

Download the mirror for Roku app from the official website of iStreamer The app is also available on the Apple App Store.

You can use the iStreamer app to mirror Mac for Roku, and the steps are as follows: It simply removes wires and cables out of the equation. You only need to own a Mac-based computer and have access to Roku TV. Additionally, Mirroring a Mac system to Roku is an effective way to stream multimedia files such as photos, videos, music, and even games on your TV. It is a known fact by now that when you mirror a device, you are sharing your computer screen onto your Roku TV. Mirror Mac to Roku - How to use Mirror Mac for Roku?

Mirror roku mac