Yes. 3.5 MB is the limit for both video and image to ensure that Heavy Ads Limitations will not be triggered and remove the ad from browsers. If your material is heavier, don't worry– we have an API integration to our partner Seenthis, that can quickly transcode your assets so they are displayed using streaming technology rather than download technology.
This means that it's possible to use heavier material in your campaigns, with better quality and streaming.
Reach out to your local sales representative or email@example.com if you'd like to discuss this further.