HBO, cable’s most popular premium channel, is carefully entering the arena of Internet video.
The channel, a subsidiary of Time Warner, will introduce HBO on Broadband starting this week to subscribers in Green Bay and Milwaukee, Wis., then spread the service slowly to other parts of the country. The free service will allow access to about 400 hours of movies and original programming each month. It will be made available only to people already subscribing to HBO, and it will be marketed and delivered through cable operators.