Tried again with another new project, creating the menu first. It only cut off a second or so at the end of the main timeline, which I was fine with. But I realised I’d set a few end actions and menu buttons to go to the menu, rather than the menu’s loop point, so I went in, changed those, and rebuilt. Burned. Watched the DVD, expecting the last second to be cut off…and it wasn’t.
So I opened that ISO in PowerDVD…and the last two seconds were still missing. It showed the length of the video as 1:34:42, but at 1:34:40, cut to the next timeline. My DVD player, however, didn’t do this, thus the appearance of things changing.
So is it just a matter now of doing the menu first? And why does it even matter?