I loved iDVD because I could burn discs with templates for menus. iDVD had a nice selection of main menus for DVD movies. Does anyone know of a good alternative program? Apple Store said "Burn". But Burn doesn't have cool menus like iDVD had. 😕
iDVD '08, OS X El Capitan (10.11.4)
There is no adequate alternative to iDVD.
Why is there no iDVD on my new Mac? How do I get it and how do I install it?
https://discussions.apple.com/docs/DOC-3673
To burn a DVD with iDVD from the latest version of iMovie, you have to export the movie using the Export button and select 480p as the size. Open iDVD and start a new project, then drag that exported movie file into the iDVD menu window, avoiding any drop zones you see.
If you are using El Capitan see this thread:
Alternative for iDVD?
