Mountain View, Calif. - Keystream on Monday launched its Web video ad insertion service, and announced a new round of financing from Voyager Capital and angel investors.

Mountain View, Calif.-based Keystream's software-as-a-service platform can automatically place "non-obstructive, non-interruptive" ads in commercially or user-generate video content.

The company's team, which includes former BBC chief technology officer John Varney, spent the past four years developing its SmartAd platform.

They say the technology can "automatically and intuitively locate subject matter on the screen and place ads in blank spaces."

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