The Carlyle Group is leading a $100 million investment into Avail-TVN, which will allow the Reston-based video company to fuel its international growth, the firms announced Monday.

Avail-TVN’s investors already include Columbia Capital, Valhalla Partners and Novak Biddle, which are Washington-area venture capital firms.

The Carlyle investment will allow Avail-TVN, which is the largest global provider of digital video services, to acquire On Demand Group, a video-on-demand provider based in the United Kingdom, according to the companies.

Publicly-held Carlyle, based in Washington, is one of the largest private equity firms in the world, with $159 billion under management.