>>93480Handbrake to trim the original file
MKVToolNix to extract the audio track
Audacity to trim the song and mix this audio track with the song
MKVToolNix again to add this new audio track to the trimmed MKV
Handbrake for MKV -> MP4
Yeah I'm tard, what about it?
Also I just learned that Davinci and Resolve are the same thing.