@Hex If that is so, then great that's exactly what I wanted to hear. Indeed, most of my videos work perfectly fine, only a mere fraction make a black screen. I guess this issue will be put on the back burner for now.

Finally about the video audio, I found it in the audio settings (I think it was there all along..!). But might be nitpicky, but I wish there was a way to enable video sounds in the ES menu, but remove it in the screensaver. Really though, at this point, the option that is already there satisfies my needs for the most part.

Thanks, Hex, you were very helpful. :)