If it's commercials for other products throughout the show, you may be playing a non-prime video, possibly belonging to the IMDB freedive - these do have commercials. Sep 22,  · But, increasingly, users logging into their Prime Video app are finding more ads than usual. One reason for this is that IMDb TV content is blended seamlessly into the main Prime Video content. In other words, users are clicking on a show with.

I am not living in US, but it seems Amazon has channel called IMDb TV were you can watch movies for free without Prime subscription. Even if you have prime subscription you will see ads on that video, because it's not include in prime. I suggest you to read this conversation especially 7th .