@ferdnand If you follow the "regular" process of setting up Daphne Loader on a PC/Mac, letting it download the media files, authorizing properly with a valid Dragon's Lair DVD, you should end up with a single video file (lair.m2v), a single audio file (lair.ogg) and a lair.txt that looks like this:
.
151 lair.m2v
This file basically references the video file and the number is the starting frame from the original laserdisc. Daphne knows, based on the frame numbers, where all of the scenes begin and end.
If you have a different set of media files (for example, you ripped mpeg2 video directly from an actual Dragon's Lair Laserdisc from your real Dragon's Lair arcade system), you need figure out the correct starting frame numbers for each of your media files. It can be done. Good luck. Google is your friend, but a good starting place is to learn everything you can about Daphne, laserdiscs and framefiles. Try this for starters.