Questions about rate control methods

English comes from machine translation
在x264编码下,VBR和CRF有什么区别?
我注意到VBR中也有CRF选项。我明白他们各自的定义,但当VBR中包含CRF时,我搞不懂他们之间的区别了,我记得在以前的版本中是不包含CRF的。

还有一个问题是在h.264编码下,VBR_LAT的定义和原理,以及它与VBR最大的区别是?
What is the difference between VBR and CRF under x264 coding?
I noticed that the CRF option is also available in VBR. I understand their respective definitions, but when VBR contains CRF, I can't understand the difference between them. I remember that CRF was not included in previous versions.

Another problem is that in H.264 coding, What is the definition and principle of VBR_LAT and the biggest difference between VBR_LAT and VBR?
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