If you are going to use VideoPad on your Mac, you better use version 13.81 because right now, version 16.35 has a bug that pops the VideoPad window back up. That's fucking annoying!!! Also NCH didn't release an update to fix it for the Mac release yet as writing this.

Oh yeah, here's a key I collected a long time ago: 210870705-mnrdenzi
It will work on both OS releases, however, I didn't tested it on the newest one for Windows.