About forty percent of media buyers at marketers and agencies say that measuring ROI in online video is hard to do, according to just-released study from online video technology provider Casale Media.

But marketers can improve ROI by defining goals up front, developing models to calculate engagements and finding vendors that can track those goals. For more details, check out this week's New Media Minute.

-Daisy Whitney

Editor's Note:  Daisy's New Media Minute is published and sponsored sepparately from Beet.TV.  We are delighted to publish it regularly on the purple network. AP