Settings
Open RoomCast → Settings… (Command-,). Settings is in the app menu, under the RoomCast name.
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The sidebar lists the panes in this order: Audio, Stream, Poster, General, Advanced. The footer of the Settings window has Save and Close, and the line Changes take effect next time you start broadcasting.
The Poster pane itself — Wi-Fi name, password, security, and hidden network — is covered in Your network and the QR poster.
When you change settings
- 1
Open Settings
Choose RoomCast → Settings… (Command-,).
- 2
Change what you need
Use the sidebar to open Audio, Stream, Poster, General or Advanced.
- 3
Save and Close
Press Save and Close at the bottom of the window.
- 4
Start broadcasting again
Changes take effect next time you start broadcasting.
Settings saved? If RoomCast helped, you can buy me a coffee.
Audio
Use the Audio pane (or Change Sound Source on the main window) to pick the input: a USB interface, the built-in microphone, a headset, or another listed device. For Spotify, another music app, or DJ software, see Broadcast music from an app.
Quality presets on this pane include Speech 32k (the default, and the one that uses the least Wi-Fi), Standard 64k, and Music 96k. There is also a bandwidth estimate for the quality you picked.
For an interpreter feed, leave channels on Mono (also described as All inputs summed). Mono adds every input on the device into one stream, so a stereo desk is heard even when the voice is only on one side. Stereo uses the input you choose and the next one.
Bluetooth earbuds (for example AirPods) switch to call mode when they are the microphone. Their own playback drops to call quality, so the stage may be harder to hear. If you use them as the mic, turn Bluetooth off on your phone and on any other nearby device paired to them before you go live.
Stream
- Stream name. The default shown is
live. - Port. The listener port. The default is 8889.
- Broadcast title. This is the name shown on the lock screen and in the listener’s browser. Leave it blank for “RoomCast Broadcast”.
- Network mode. Auto (UDP+TCP) is the normal choice. You can also pick UDP only or TCP only. The hint on this pane is: Choose TCP only if listeners hear dropouts.
General
- Keep Mac awake while broadcasting. The Mac still sleeps if you close the lid, unless it is on power with an external display. Leave the lid open, or plug in a screen.
- Launch at login.
- Start broadcasting when the app opens.
Advanced
- ICE port. The default is 8189. Phones receive the audio on this port. You only need to change it if another program is already using it, or a firewall blocks it. It must be different from the listener port.
- URL style. IP is the one to use on a printed poster when the Mac’s address is reserved. The
.localname can fail on many Android phones. - Max listeners. 0 = unlimited. The default shown is 0. The app accepts values up to 500.
- Log level.
- Custom bitrate, from 16–256 kbps, if you need something other than the Speech, Standard, or Music presets.
- Reset to defaults.
About 50 phones on a modern Wi-Fi router can listen at once. The real number depends on the router, other traffic on the network, distance and walls, and the quality setting. See the bandwidth table on Getting started.