Diablo 1 HD Hellfire Mod | Awake

Hi, I got problem with videos. They don't show up whole, but only high part. They're cut, maybe half of video - rest is just black. It's not a big problem, because it's only the intro and short stuff with butcher (and there are some final scenes at the end of the game I guess), but it's still some kind of bug. Any ideas?

He-he. Intro video, butcher's cutscene and some videos at the end is all videos in the game actually. And nothing more.

Yes, that's why I wrote it's not a big problem and I know all these scenes but still it's bug and I don't know how can I fix it.

This can be problem with video codecs or some video/game drivers.