lip sync with other language

My question is simple
Is it possible to lip sync with other language ? And for me in French

Simple answer is yes. A longer answer is that it will take some customization of reference material and finesse but it can be done with the existing structure built into the software. Each language expresses vowels and consonants is a specific manner.

but then how to customize the reference material? to improve the labial recognition

Making a mouth chart (reference the mouth shapes that occur when speaking the language of choice)