Blockbuster, one of the nation’s largest video-rental companies, has acquired Movielink, a video-on-demand service owned by five of the top six movie studios.

Terms of the deal were not disclosed.

Movielink offers digital movie downloads, but none of the competitors in the sector has managed to find much of an audience.

Founded in 2002, Movielink is backed by Universal Studios, Paramount Pictures, Sony Pictures, Metro-Goldwyn-Mayer, and Warner Bros. Studios.

For Blockbuster, the acquisition comes during one of the company’s darkest periods. Competition from cable providers offering video-on-demand and DVD-rental services such as Netflix have cut into profits.

The company’s stock price hit $7.30 in March, a 52-week high, but closed trading on Wednesday at $4.23. The stock, which was trading at more than $20 in 2002, was up 8 percent to $4.60 in after-hours trading.

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