[mythtv] NVidia Shield and 4K video

[Peter Bennett]

I have to admit defeat on this one. Everything I have tried results in 
the image being doubled in width and height before being displayed, and 
any image larger than 1920x1080 is cut off on the 3840x2160 screen. 
Android and QT documentation are vague on the subject. The API 
documentation has wording like "The size returned by this method does 
not necessarily represent the actual raw size (native resolution) of the 
display.
2. It may be scaled to provide compatibility with older applications 
that were originally designed for smaller displays." Apparently it 
thinks MythTV is an older application designed for smaller displays.

At this time is it somewhat academic, as I do not believe any TV 
stations broadcast in 4K.

I can play a 4K video and its resolution is reduced to 1920x1080. The 
same video plays with MythTV in its full 4K resolution on Linux with 
vaapi and on Shield through Kodi. Android Kodi can use the full 
resolution, I do not know what their secret is.

Kodi is not a QT application, the problem may lie in the interface 
between QT and Android.

Peter