So you are saying the Catalyst pgm takes a long time? Maybe it's not worth it at this point. Maybe the 4k update will address.
(related..not mine)
https://thevideowhisperer.wordpress.com/sony-pxw-x70-resources/xavchd-vs-avchd/
https://thevideowhisperer.wordpress...ranscoding-xavc-using-sonys-catalyst-program/
(related..not mine)
https://thevideowhisperer.wordpress.com/sony-pxw-x70-resources/xavchd-vs-avchd/
https://thevideowhisperer.wordpress...ranscoding-xavc-using-sonys-catalyst-program/