[wtsnz]

[Disclaimer: Author of Telecast here]

I've been working on an MacOS and iOS app to do just this if you have an older iPhone lying around. https://telecast.camera/

I've been using it to record multicam music performances/practice sessions as I didn't have an expensive DSLR. The latency of other solutions was too high to easily sync guitar strumming and audio-in from an audio interface.

I'd love feedback! Things like the linked network are of interest, as I'd like to add support for background replacement in the future, too.