Hello all. I have:

1) Willpower

2) Some M2TS Scenes that I want to trim parts from (e.g. the beginnings and ends).

What is the best way to do this? Can I do it without loss? I have tried a few different programs and so far they have all been less than stellar. In a related question, M2TS files seem to be a pain to use. Would I be better served converting them to a more common, usable file format? If that is the case, could I do that without losing quality?

Just overall I am trying to figure out the best way with which to deal with M2TS files. Thanks in advance.