The most effective, and least annoying ad format for short-form online video is a five-second pre-roll, combined with a ten-second ad that overlays the bottom one-third of the screen. The test, run across more than 50 million video streams on MTV-owned sites, also examined the effectiveness of a 5-second pre-roll coupled with a 10-second animated ‘side-loader’, or custom unit that slides out of the right side of the screen during playback, as well as a 30-second pre-roll ad.

EarPods and phone

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Tools: Kaiber

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