Banner: The format of an ad unit that can display text and image ads, display advertising, or video ads. You can set the allowed unit sizes. The number of ads and the font size are determined automatically based on the set sizes.

You can disable video playback in units with banner ads: the unit won't display video ads and text and image ads with video extensions.

Restriction. The minimum size of the unit that supports video playback is 300 x 160 or 160 x 300 dp (density-independent pixels).
  1. Enable banner ads