Version 0.47b works fine, but any other later version looks corrupted:
0.47b

0.57b
This is the terminal output of XTPlayer when run from it.
I tried converting the video from mp4 to mkv, no changes.
The video still plays, but all the artifacts remain on screen and do not change.
Let me know if you need any more info. I'm not a developer so I might not know what else you need.
In the meanwhile I will try to get xtweb up. Maybe it would work that way.