YouTube masthead ads hit TV app September 18, 2019 • masthead, YouTube 40 seconds. (334 words) letting advertiser buy masthead ads on a CPM basis in February. Prior to that, they were only available on cost-per-day terms. About The Author Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.