Are you concerned about JPEG or MJPEG? We have implemented MJPEG based UVC project.
Please let me know what are the kind of variable FV you expect? is it the FV assertion time or the FV duty period?
It is JPEG format. But I can also choose MJPEG format in principle. I was talking about LV (my mistake, I'm going to edit the initial post). What changes in the LV is not the assertion time, but the duty period, which is variable.