I use Final Cut Pro. I’m still learning it. Still not good at organizing within it. I also use 4k downloader mostly to get music. I use VLC to convert MKV to mp4. So far I don't really clip. I used to when I used an older version of Final Cut. I've tried using the keywords and it seemed like more trouble than it was worth for the sources I was using which didn't have that many hours. Also I didn’t have things organized correctly to use it effectively.