HTML5 video not playing, fix then caused no audio
I was having troubles in Vivaldi only (Chrome, firefox both work fine) where videos would start but never play, the first frame would just show, no audio either. Going through the fix listed here fixed this issue but now no audio is playing at all.
Oddly enough restarting my PC seemed to fix the video issue but only temporarily, it came back within a day.
I seem to have fixed it this time (not sure if tempory, been less than 5 minutes) by disabling the change made in that guide (leaving Hardware Acceleration on because it was already on) and restarting Vivaldi. This at least let me fix it without rebooting entire PC.