Make moving creations using audio reactive brushes

Some brushes are labelled audio reactive. Their colour, shape or motion responds to audio captured by Open Brush.

Desktop workflow

1. Begin playing audio from your computer desktop.
2. On the Brushes panel, select the wavy audio-reactive button.
3. You will see a message that Open Brush is listening for audio.
4. Once audio is detected, draw with an audio-reactive brush.

Desktop builds listen to the computer's current audio output. If no source is detected, start playback before enabling audio-reactive mode and check that the intended Windows output device is active.

Quest and other standalone headsets

Standalone builds react to audio playing inside Open Brush rather than audio from another app:

1. Copy an MP4 or another supported video containing an audio track to Documents/Open Brush/Media Library/Videos on the headset.
2. Add the video from Extras > Local Media Library > Local Videos.
3. Make sure the video's volume is above zero and start playback.
4. Enable the audio-reactive button on the Brushes panel and draw with an audio-reactive brush.

Different brushes react in different ways, including pulsing, changing brightness and moving their geometry. The audio affects the live rendering; it does not alter the underlying stroke control points.