How to play .DAV files on Mac?

None of these worked for me on Mac:

Aiseesoft, UfuSoft, SmartPlay, Amcrest SmartPlay (same thing), Dahua OSX Software.dmg, MPlayer OSX Extended,HandBrake, ffmpeg (required command-line knowledge), anymp4, iDealshare, Bigasoft Total Video Converter, Wondershare. None of them worked.

Here's what worked, an online file converter (this link converts to .mov, but there are a bunch of other options):

https://video.online-convert.com/convert-to-mov