[mythtv-users] Video Quality on NUC

[Paul Gardiner]

On 16/01/2020 23:02, Ken Mandelberg wrote:
> I'm running a mythfrontend on an inexpensive NUC (NUC7CJYH) on Ubuntu 
> 18.04 / Myth master build . I'm pleased that the CPU performance is 
> fine, but surprised that I can't seem to adjust the video properly.
> 
> No matter how I set brightness/contrast/color its just not quite right. 
> If I adjust for bright scenes its bad on dark scenes and viceversa. 
> Actually on transition  frames that should be very black, they tend to 
> be dark grey. In general dark scenes are a bit muddy.
> 
> I'm going over HDMI to a HD TV, which doesn't show this issue with other 
> sources, including an old Mac running the same Ubuntu/myth software.
> 
> Any idea what the issue is?

That sounds like the TV is configured to receive Full video levels 
rather than Limited. If it's not a concept you're familiar with, this 
KODI page explains it: https://kodi.wiki/view/Video_levels_and_color_space