San Francisco-based VideoEgg has raised $15 million in additional funding in a Series D round from existing investors WPP, Maveron, and August Capital, as first reported by TechCrunch. Update: The round was led by Focus Ventures, says the company via email.

The video distribution and advertising company in April said it had raised an undisclosed amount from WPP. That was on top of a $12 million round raised last September from Maveron, August Capital, and First Round Partners, and nearly $5 million from the latter two firms nine months before that — which means that VideoEgg, since it was founded in 2005, has raised more than $32 million.

We’ve discussed VideoEgg quite a bit lately following YouTube’s launch of overlaid video ads that look and feel similar to VideoEgg’s (and other firms’, though VideoEgg claims it owns relevant intellectual property). We also picked up on a report last week that VideoEgg was juxtaposing consumer electronic ads onto footage of, for example, an Iraqi who appeared to be blowing himself up. The ads, which were posted on the site www.Military.com, seem to have been pulled, though VideoEgg has declined to comment on the matter.

In other recent news, VideoEgg deployed ads on Facebook and launched an interesting product placement campaign for Motorola (MOT) on The ‘Burg.