old thread , but still want to post here if you don't mind . I have also tried the Sony plug-in but with no luck, the most unbelieveable thing is that sony developed this codec but it can't deal with it by themself ! even for the sony vegas..... so I have to transcode the xavc to prores with some converter from pav, here is what I learned online, even you don't transcode them into prores, the fpc will help you do the same job in the backstage. So I just do it first which may speed up the rewrap conversion.