How to convert WMV to QuickTime MOV? How can I convert a WMV (Windows Media Video) movie file to QuickTime MOV on OSX El Capitan?

If possible I would prefer to use an installed program rather than an online program.

Neither VLC nor Handbrake can convert WMV to MOV. A Google Search reveals some other options, but I'm dubious about installing these unknown 3rd-party applications without a recommendation from people I trust (ie StackExchange users).
Install FFmpeg, e.g., using Homebrew:

brew install ffmpeg


FFmpeg is high-quality software for converting video and audio files between different formats.  It does require installing separate software, though.