Yes, you can accept 30-second preroll video ads for SoCast digital campaigns. The ideal length for in-stream video ads is 15-30 seconds. These ads can run as preroll, meaning they appear before video content. Please note that for YouTube campaigns, preroll ads are skippable after the first 5 seconds.
For more details on ad specifications and best practices, refer to the Ad Tech Specs article in the SoCast Knowledge Base.