‘We’ll peer at the IXP’ sounds decisive until you ask which exchange, and who’s actually on it. Here’s the practical picture of Indian internet exchanges for an IPTV operator.

Internet exchanges are where networks meet to swap traffic directly. For an IPTV operator they’re how you reach ISPs cheaply — but only the ISPs actually present. Knowing who is where is the difference between real reach and a slide.
Peering at these exchanges gets you excellent, settlement-free reach to regional and local ISPs — exactly the audience for a wholesale IPTV platform. What it does not automatically get you is the big three eyeball networks, who prefer private interconnect. Plan for both.
Presence in Kolkata, Delhi and Mumbai puts you on the exchanges where most regional ISPs peer, and lets each viewer be served from their nearest edge. This is the peering half of the peering-vs-transit strategy made concrete.
Talk to a team that runs a live operator, not just sells software.