One asset for each side (4 total)

Image: 320x320px, max weight 200 kb 

Video (mp4): 320x320px, max weight 1.5 Mb

Animations: must loop maximum 3 times and no longer than 15 seconds.
Audio: User-initiated
Supported Ad Verification: Adnami supports pixels for impression and viewability tracking from 3rd party providers
Secondary pixels supported: Yes