问题描述
你能帮我理解YUV420和YUV422格式有什么区别吗？
我读过这个，，但我可以'找到差异。
Can you please help me understand what are the differences between YUV420 and YUV422 format?I read this, http://www.fourcc.org/yuv.php, but I can't find the difference.
YUV420和YUV420 SP的意思是一样的吗？
并且YUV422和YUV422 I是否相同？
And does "YUV420" and "YUV420 SP" mean the same thing?And does "YUV422" and "YUV422 I" mean the samet thing?
谢谢。
推荐答案
4：2：2 ：以亮度采样率的一半对两个色度分量进行采样：水平色度分辨率减半。
4:2:2: The two chroma components are sampled at half the sample rate of luma: the horizontal chroma resolution is halved.
4：2：0 ：两个色度分量以水平和垂直方向的亮度采样率的一半进行采样（即有一个 U 和一个 V 每2x2组 Y s。
4:2:0: The two chroma components are sampled at half the sample rate of luma both horizontally and vertically (i.e. there's one U and one V per 2x2 group of Ys).
有关其他变体的信息，请参阅，和。
For info regarding other variations, see this, this and this.
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