Best XAVC Converter to trans-code my mxf files in high definition

I personally owned Pavtube MXF Converter, and I am totally satisfied with it. But my problem is I have a bunch of videos which more than one audio track in them. So I need this MXF Multimixer to help me tackle this problem. I did these videos just for myself and killing time during a trip. My videos came from Sony PXW-F70 Recording SAVC (*.MXF) format. At first, I was worry about this MXF Multimixer can’t handle this XAVC codec. But it turned out that there is nothing to be worried about. XAVC codec can also be converted smoothly.