Find a developer that understands WebRTC if you want 1-4 room participants.
Look into FlashPhoner -- AWS has that app available on their cloud AWS for larger groups. Maybe it'll cost you $30/hr for use? That is HLS and WebRTC (not Adobe Flash).
I don't understand your monetization strategy here exactly -- an added value offer? -- but you are not going to find a ghetto script to do this ...
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