“It’s going to kill the industry,” said Gary Cook, business manager for UA Local 78, which represents studio plumbers.

Mr. Lowe, meanwhile, is portraying the studios as greedy giants scheming to trample the little guy. “Don’t let a few movie studios prevent you from seeing the latest DVDs for an affordable price,” reads a headline on a new Redbox Web site, savelowcostdvds.com.

Redbox, formerly owned by McDonald’s and now part of Coinstar, is only the biggest of a host of DVD vending companies. DVDPlay, whose kiosks are also red, has been aggressive in California, while MovieCube is big in Canada.

Blockbuster is scrambling to introduce its own rental kiosks. There are now about 500 Blockbuster Express machines, and plans call for 2,500 more by the end of the year; the company expects to open 7,000 in 2010, a spokesman said.

The kiosk boom is fed by several consumer and business currents, all related to the recession.

For starters, the dismal economy has made people think twice about buying DVDs, especially as the likes of Redbox have made renting easier. Consumers are also tiring of the clutter: The average American household with a DVD player now has a library of 70 DVDs, according to Adams Media Research.

Over all, DVD sales are down 13.5 percent for the first half of 2009 compared to the first half of 2008, according to the Digital Entertainment Group, a trade organization. Studios say some new titles are selling 25 percent fewer copies than expected. Rental revenue is up about 8 percent over the same period, according to the group.