Just curios if any knows,
I seen a belt level requirement video for a Martial Arts school.
What they had was this, you could go to your chapter selection to choose which ever form you wanted to watch, what they had on every video that was playing, was menu buttons.

loop- which kept looping that same form
slow- which played it in slow motion
next- which took you to the next form
menu- which took you to the main menu

Are all these videos made as short clips and then basically all motion menu's that are linked or are the buttons and the links embedded in the video thru the authoring of the DVD. I would be interested especially in the loop and next buttons if it can be done in say dvdlab.