Providers can ensure video quality by applying algorithmic compression techniques such as chroma subsampling , which uses color variation undetectable to the human eye 供应商通过应用诸如色彩子取样等算法压缩技术确保视频的质量,所谓的色彩子取样使用了人眼观察不到的颜色变化。
百科解释
Chroma subsampling is the practice of encoding images by implementing less resolution for chroma information than for luma information, taking advantage of the human visual system's lower acuity for color differences than for luminance.