Jon Snow joins the Night's Watch to face an ancient evil.
A witty "imp" who uses his mind to survive.
If you already own the 4K BluRay set, consider creating a 720p HEVC (x265) version for portable devices. Use the RF (constant quality) setting of 22 in HandBrake. You will preserve an astonishing amount of the original detail while reducing file size by over 70%. And as Tyrion Lannister would say, “That’s what I do. I drink and I know things.” Now you know things about your viewing options. Enjoy the climb.
If you are a completionist, the 720p BluRay rip is the only way to preserve these extras alongside the main episodes.