QMediaPlayer cannot open videos from UNC paths

When using the Qt example "videowidget", trying to open a video from UNC path causes error, and the video cannot be played.

Steps to reproduce:

• Start Qt Example program "videowidget"
• Open file, navigate to network path (i.e. "\\server\movie.avi")
• Press play

Observed result:

• Error is shown to user, video cannot play. Given error is "DirectShowPlayerService::doRender: Unresolved error code 80040266"

Expected result:

• Video plays

I tested changing the QUrl::fromLocalFile to simple QUrl as suggested by some workarounds, but it did not fix the problem.