BDInfo OSX

BDInfo OSX is a free and simple to use app which will allow you to open a BDVM folder from your Blu-ray drive or folder and then BDInfo OSX will automatically show you a list of all MPLS (playlist files) files and their length.

Later one can use the MPLS file with a program such as TSMuxer to remux the MPLS playlist into one single M2TS file.