Was Marvel Studios always planning on turning Anthony Mackie's Sam Wilson into the next Captain America? In a new bonus clip, which is part of the impending home video release, we get a ton of insight into how casting Anthony Mackie changed the entire direction of the MCU.

With the latest instalment in the Marvel movie franchise, Captain America: Brave New World, coming to the end of its over $400m global cinema run, Disney has wasted no time revealing the details of its roll out to the home video market – including a 4K Blu-ray release that will be available in both standard and steelbook versions.