“It is limited to 1920×1080 though.”
Incorrect. It will do almost all standard sizes, usually with 3 tiers of bitrate and 1 10bit option for each.
DNxHD is a great codec… it’s a bitch to have to install the codec for some people, but it’s the option to go for if you’re not dealing with ProRes capable system.
YUV 10bit is also awesome, but holy moly the file sizes are huge.