IMovie DVD freezes in DVD player. Why?
So I've been making life-in-photos dvds for friends and family for years. Never had a problem with the old version. Had to get new version and bought UDEMY course to learn it.
With a 2015 IMac, and IMovie, I did a dvd of my daughter's life so far, and it worked fine on the computer and super drive. I made up about 15 copies for family and some of them were fine, some of them froze. So I got some better Verbatim discs and redid them, and most were good; even think there was one or two I had to redo there. So it wasn't the discs.
I have been working on one for my late son for almost 2 years. I finished it in June, ran off the copies, all of them froze at 14.11. Not on the computer or super drive , but people's DVD players.
So, now I have a 2019 IMac, a new IMovie app, a new Toast 19, and I redid his life in photos. Same thing. This time tho, I was able to rewind a bit and then it would move thru that point, and work. First disc did it 3 times. Second disc I burned and tried; did it once.
Please tell me what I'm doing wrong. Old, old questions here looks like it does this on DVD players. One said a slower burn time??? Any help gratefully received. I need to get the answer to this and get it done and KNOW that they are going to play. I've thought of doing this for the families of deceased individuals, but I can't do it if they are going to mess up and I can't count on their professional appearance and play. thanks
iMac 21.5″, macOS 10.14