Welcome to the community teichrib!
The HRESULT error being returned suggests this is a codec issue:
With this in mind I would recommend trying a different codec to see if this resolves your issue. I find a good way to test video playback is to use Handbrake to convert your video to a 720p fast or 1080p fast preset, and to make sure to set the file to be MP4 when it is re-encoded.
Many Thanks.