High-quality video ads can be expensive to produce, running in the hundreds of thousands, if not millions of dollars, depending on the ad format. But rather than hire a production agency to do their dirty work, Poptent proposes a better way for agencies and brands looking to produce video ads and other messaging: Crowdsource them. And it's raised a $5.5 million round of funding led by MK Capital to get more advertisers and videographers on board.Poptent has built a platform for crowdsourcing videos from users around the world, which allows brands and agencies to submit various assignments and receive finished videos in return. It's also got a pretty huge network of videographers from around the world -- more than 50,000 from 140 different countries -- who can respond to those assignments, giving advertisers plenty of content to choose from. read more..