I'm interested in creating lightsaber effects with a Macintosh on home videos with my children.
What is the best low cost software for recreating this effect today? I don't have Adobe CC, and have no desire to subscribe to it, nor do I have Final Cut Pro X.
Does iMovie support this effect? Are there any good free or cheap rotoscoping or canned effect programs to accomplish this?
Edited to add: "Would the free (non-commercial) edition of Nuke for Macintosh" be a good solution? (I discovered it after asking.)