That linear content is considered “Non-Engine Products” that are not subject to royalty.
a. Non-Engine Products - You may Distribute Non-Engine Products to any third party. “Non-Engine Product” means a Product made using the Licensed Technology that does not include any Engine Code or any Paid Content Distributed in uncooked source format (in each case, including as modified by you under the License) and does not require any Engine Code (including as modified by you under the License) to run. For example, and subject to the foregoing, you may freely Distribute non-interactive linear media products (e.g., broadcast or streamed video files, cartoons, movies, or images) rendered using the Engine Code, and asset files (other than UE-Only Content) developed or used with the Engine Code, including in products that use or rely on other video game engines.