Anyone know a pay-per-view web video service?

Hola all,

Developing a site for a client that wants pay-per-view video on their website. Would attempt to build such a system myself, but it would cost the client an arm and a leg.

Anyone know of a legitimate pay-per-view video hosting service out there (preferrably with an API so that the video and transactions can remain on client’s site)?

Tried searching for it, but only getting back what seem to be questionable providers.

Thank you!