The best kind of video to put an pre-roll ad for cars is in, well, videos about cars. But the context that drives video ad engagement is not always so clear-cut.

Video ad tech vendor Innovid’s just-published research in to the topic shows that, whilst auto ads placed against auto videos yielded a 40% higher engagement rate, pharmaceutical ads performed 130% better when they were served against… sports videos.

“Verifying video-level content can offer valuable insights to help optimize campaigns and boost performance,” according to Innovid’s research white paper.

in this recent video interview with Beet.TV, Innovid CEO Zvika Netter explains why the company opened up its platform to allow connections with a host of video verification systems.