I have a chapter selection menu that has animated buttons that play the chapters I selected from a 25 min video. For some reason no matter what I set the menu duration for or loop point for that matter, my thumbnails only play for 15 seconds. I just want them to go for 45 second or so, I don't think 15 seconds is enough time. My chapters have more than a minute of duration between them, and I've even tried setting a 17 second duration but has no effect.
Animated buttons are limited to 15 seconds if your menu background is static and there is no audio background. So either make a full motion menu with a video background, or add a couple minutes of silence as an audio background.