Cablevision has conceded online video is now increasingly challenging its cable television package, so instead of trying to put a lid on “over the top” video, the Long Island, N.Y.-based cable company is embracing it with a deal to offer the streaming service Hulu to its customers.

“There is a new generation of consumers who access video through the Internet, and whatever their preference, Cablevision will facilitate a great content experience,” said Kristin Dolan, chief operating officer of Cablevision, in a statement.

The deal covers the service’s entire catalog of on-demand television shows and movies and will be available to Cablevision broadband customers online and possibly through set-top boxes for traditional cable television customers.

The arrangement is unlikely to prove compelling to current broadband customers who can enroll in Hulu free of charge and Hulu + for $7.99/mo, without Cablevision’s help. But if the cable operator bundles the service into existing packages at no extra charge or offers the advertiser-supported pay service at a discount, it may provide a useful option for customers considering cutting Cablevision’s cord.

Hulu has not proved as popular with online video fans as Netflix, perhaps because it forces viewers to sit through a very heavy ad load, even with its premium service. Even with the announcement this week Hulu acquired the streaming video rights to all 180 episodes of Seinfeld, a show that aired its last original episode in 1998, Hulu is unlikely enough to seal a deal with subscribers.

Cablevision may also be interested in Hulu to bolster its new broadband-only “cord-cutting” packages (shown below), which Cablevision hopes will help it save a customer’s business if they are ready to drop cable television. Hulu is often a “must-have” by cord-cutters who enjoy first-run network shows.

CEO Jim Dolan even admitted there may come a day when Cablevision exits the cable TV business completely and relies entirely on selling broadband service.