Yep, W10 64 bit is the culprit.
See my previous post. I have Windows 10 x64 and intros/cutscenes work fine. Conclusion: that's not the culprit!
In an attempt to divert an argument here, what do you propose is the problem and solution? I state above, I have tried both exes, with all the various compatability settgings. Have tried Windows media player, and associations. And tried Windows 9 codec. Have even uninstalled VLC. Still nothing makes the videos run whilst in game. Do please also bear in mind that I have vitrually nothing installed, calibre, game collector, musicbee, digicam, freefilesync and blender. Nothing else, just plain windows 10 pro 64 bit, version 1903.
To note, the first cutscene is just after character creation, this does not trigger, it just dumps your character straight to the temple. Also note the videos play fine in Windows Media Player, VLC, or Potplayer, just not InGame.