A German court has dealt Netflix a major blow, ordering the streaming giant to stop using H.265 video encoding for 4K streaming.

According to Next TV, a Munich court sided with Broadcom in a patent dispute, ruling that Netflix can no longer use H.265 for its UHD video streaming in the country.

“Netflix has built a robust video streaming business that relies on Broadcom’s patented technology to deliver content to its users, and Broadcom is pleased to see this recognized by the German court,” said Broadcom VP Mark Terrano.

It remains to be seen what measures Netflix will take, whether licensing the necessary patent from Broadcom or switching to an open source alternative video codec.