[reitzensteinm]

I'm bootstrapping a similar project, video chat but with various games.

At cloud pricing you'll be paying $100/TB, but there are plenty of alternative providers that can give you great deals. Hetzner for instance charges $1/TB for their VPS solution.

You can also cut back on video detail depending on the project - you don't need to send 720p streams for something a bit more experimental or with other things happening.

Combined that's low enough that ads should easily cover the bandwidth.