I don't think that you've fully grasped what I posted. I was seeing the animated scenes just fine in v0.7.3. My installed codecs and DX are not the problem. Something the dev did when updating his code from v0.7.3 to v0.7.4 broke the animations under Win 8 again.Yeah, I know. It takes one weekend easyly. Have you update your GPU drivers ?? Because it`s clearly an isue in your comp. Just a thought, move your game to another place or reistall DirectX.
EDIT: Check the codec list at OP ( 2 links).