Cool setup! In this case, @Xenomorf had asked long ago about the best workflow for deinterlacing footage, and it was answered in the linked thread already. “Workflow” in this case doesn’t mean the entire process from capture device to final export settings. I’m not sure how “workflow” translates in French, but it’s very context dependent to the specific process being discussed in English. I applaud your patience at communicating through a translator if you’re using one.
Naturally, do whatever works for you. But for most users, CRF is usually a better and easier option. There is an objective measurement test in another thread that explains why this is.