Disney+ streams the movie in 4K with Dolby Vision and Dolby Atmos, but it automatically downscales to 1080p on non-4K displays or connections. The 1080p stream uses a high-efficiency codec (H.265) and adaptive bitrate, peaking around 7-10 Mbps. It’s far cleaner than any “587l” oddity.

Key components:

Captain.America.The.Winter.Soldier.2014.1080p.BluRay.x264.DTS-HD.MA.7.1

If you can tell me what you're planning to watch this on (TV, computer, tablet), I can tell you if a 1080p 587l file is a good choice for you. I can also help you find reviews or more information. Captain America: The Winter Soldier (2014) - IMDb

Since its release in 2014, Captain America: The Winter Soldier has remained a gold standard for superhero cinema—a tense, 1970s-style political thriller wrapped in Marvel spectacle. It’s no surprise that fans constantly search for the best way to watch or download the film in pristine 1080p.