Another easy-to-use video editor you can rely on is Joyoshare Media Cutter for Mac . It allows users to cut, split, trim and join video and audio file without quality loss in a fast speed. Besides, you can also use this Mac video cutter and editor to crop the video, rotate and flip it, adjust the vi...

I'd like to start this old thread again maybe it's helpful to others.
I once used quicktime player to record screen on mac, but i can't choose to record system audio or microphone audio. Now i'm using Joyoshare Screen Recorder for mac. My friend recommended it to me. Works well so far.