I use an MP3 file as an audio track and cut off a few scenes from videos with all the same format and in MKV. BUT everytime I produce a movie, it takes soo long to produce and drastically increases the file size when wanting quaity when all I want is to paste clips together with an audio track without re-encoding the whole thing. I can manually do that using FFMPEG but the process is long and teadious. I paid for a software that should have done the job for me but it ALWAYS re-encodes no matter what I choose.

So, how do I tell PowerDirector to NOT re-ecode and simply merge the files together?