I was looking at this in the docs:
The Android camera also requires exclusive access to the audio device, so make sure you
close any open audio devices with AudioDeviceManager::closeAudioDevice() first.
However looking at a Galaxy 9, one can start Spotify playing a song, then switch over to Snapchat to start recording video and audio. During capture, Spotify’s output remains uninterrupted. After capture Snapchat will playback the video and audio in a loop where you will hear the segment of Spotify audio it captured mixed with the current Spotify output. No glitches or issues at all.
How is this possible? Is such a thing possible with JUCE as well, or is there currently a limitation on how JUCE captures Video?