Fujifilm X-T3 and X-T4 offer two choices for color Chroma Subsampling: 4:2:0 and 4:2:2. This tutorial discusses the difference between these two color settings for video, as well as how these affect video file sizes.
Fujifilim X-T4: https://amzn.to/35nBJgu
Fujifilm X-T3: https://amzn.to/2GJN00J
Fujifilm X-H1: https://amzn.to/2F8X9n4