at the end of data.pak/scripts/advmap-startup.lua add this
then open any map, call in console
@movie("C6/M2/R1");
or any other cutscene by its abbreviation
By any chance, do you know why animations in dialogue scenes work in the original game, but in the mod for all campaigns, some of them don't? For example, the archmage in c6m3, in the first dialogue scene in "T", strikes a pose.