The world's largest retailer bought video-streaming service Vudu.com 18 months ago and Tuesday started offering 20,000 titles that can be viewed on almost any device with Internet access, from PCs to televisions to Sony's PlayStation3 and other Blu-Ray disc players.
Movies are available at Walmart.com to rent for $1 to $5.99 or to purchase for $4.99 and up.
Wal-Mart, based in Bentonville, Ark., has tested the movie-rental waters before. It previously offered a DVD-by-mail service but it stopped that service in February 2010.
