Watch the tutorial to see how easily DaVinci Resolve handles XAVC S (this is as of version 11, though as far as I know version 12 has many of the same problems):
Important:
DaVinci Resolve does not support audio form the XAVC S at this time. So, if your dailies or transcoding needs do not include dual system audio (more later), then this won’t work for you.
Bottom Line
As far as free software is concerned, you can’t find many apps (if at all) that can beat DaVinci Resolve at logging, editing, grading and transcoding for field use. To really make it shine, make sure your laptop or computer has a dedicated GPU.
Unfortunately, neither of the two free apps are totally ‘worthy’. Catalyst Browse can’t batch transcode, and Resolve can’t take audio. The only ‘cheap’ piece of software that bridges this problem (but doesn’t have the LUT creation feature set!) is EditReady, which retails for $49.99.