The amount of gigabytes used per two-hour movie on Stan is determined by the streaming quality. It’s 1.14GB for low (SD), 2.26GB for medium (SD), 5.78GB for high (HD) and 14GB for 4K. On Netflix, a two-hour movie uses 600MB for low, 1.4GB for medium, then either 2GB, 6GB or 14GB for 4K. For Netflix on mobile devices, data usage for a two-hour movie varies between 333MB, 500MB and 6GB.