| Term ID | Term Name | Definition | Broader | Release Date |
|---|---|---|---|---|
| 1 | 4:1:0 | This ratio uses half of the vertical and one-fourth the horizontal color resolutions, with only one-eighth of the bandwidth of the maximum color resolutions used. | 2007-04-12 | |
| Term ID | Term Name | Definition | Broader | Release Date |
| 2 | 4:1:1 | In 4:1:1 chroma subsampling, the horizontal color resolution is quartered, and the bandwidth is halved compared to no chroma subsampling. | 2007-04-12 | |
| Term ID | Term Name | Definition | Broader | Release Date |
| 3 | 4:2:0 | In 4:2:0, the horizontal sampling is doubled compared to 4:1:1, but as the Cb and Cr channels are only sampled on each alternate line in this scheme, the vertical resolution is halved. | 2007-04-12 | |
| Term ID | Term Name | Definition | Broader | Release Date |
| 4 | 4:2:2 | The two chroma components are sampled at half the sample rate of luma: the horizontal chroma resolution is halved. | 2007-04-12 | |
| Term ID | Term Name | Definition | Broader | Release Date |
| 5 | 4:4:4 | No subsampling is applied. | 2007-04-12 | |
| Term ID | Term Name | Definition | Broader | Release Date |
| 5.1 | 4:4:4 Y'CbCr | Each of the three Y'CbCr components have the same sample rate. | 4:4:4 | 2019-06-24 |
| Term ID | Term Name | Definition | Broader | Release Date |
| 5.2 | 4:4:4 R'G'B' | Note that "4:4:4" may instead be referring to R'G'B' color space, which implicitly does not have any chroma subsampling at all. | 4:4:4 | 2019-06-24 |