From what I have read "It’s not at all clear how such a tariff would be imposed. Films are intellectual property, not goods, so they represent a kind of service that is not currently subject to tariffs. However, the USTR notes that some services can be subject to certain non-tariff trade barriers, such as regulations and tax incentives. Those could disadvantage American filmmaking."
I honestly can't see this going very far since the countries could do the same to movies made in the US since many US states such as Georgia offer tax incentives. The movie industry now depends on the foreign market sales.