Chroma subsampling is a separate beast altogether. This is often called color resolution, as compared to the spatial resolution, like 4K. As an example, 4K Ultra HD video has a spatial resolution ...

Chroma subsampling is one of the most effective ways to watch high-resolution, high refresh rate content without the massive bandwidth that’s needed to transmit such signals. Like display stream ...

In the example above ... Meanwhile, 4:2:2 is a reference to the level of subsampling (that is, how much of the luma and chroma data is taken for constructing the video signal).

Chroma subsampling compresses the color components, while the bit rate determines how much data is encoded in each frame. See chroma subsampling and bit rate. Resolution, Frame Rate and ...