Coub, a startup that lets you edit and remix looped videos up to 10 seconds long (think of them as GIFs with sound) has raised $2.5 million from Vaizra Investments, a fund headed by the cofounders of Russian Facebook competitor VK.com. TechCrunch reports that the money will be used for Coub's further expansion outside of its New York office and to continue developing its web and iOS apps.