I use VLC for years in Windows and never had that problem. I also use it since my fresh Win10 install last year (by "fresh" I mean it wasn't an update installation but a pure installation after format) so there is less room for problems.
Until yesterday VLC worked fine but since then all videos I ran in VLC doesn't contain image --- Only sound. I should note that I didn't anything special I could mention to the system - I didn't update the Win drivers or anything of the sort.
WMP (Windows Media Player) plays videos fine. There are no malfunctions with the PC itself.
Things I've tried and didn't help:
- Reset all VLC prefrences.
- Updating VLC.
- Uninstalling and reinstalling VLC (updated version).
Unchecking "Accelerated video output (Overlay)" option under Tools->Preferences->Video.
- I also tried to restart the PC after reinstall - No change.
The video card was most likely to be Asus GTX 570 OC, at the time.