Thanks. The trick was to use Enhanced Video Renderer as the Video Renderer. It was the only renderer that worked, the rest did not. Was using EVR Custom Presenter as default in the original settings.

Check Options->Video->Geometry

Tried different combinations of the options there. It changes the ratio of the visible video, but the surrounding blue coloured background is still there,

ie the video size remains the same on the top left corner, not expanding to the whole screen.

Hope that ...

This could be a simple fix, so any help is highly appreciate.

I've got ProgDB/ProgTV 7.15.1 x64 installed on my machine, which is connected to a display with 1920x1080 as the resolution.

When I play a TV channel (source TV tuner) using ProgTV, the video does not display in full, some parts are cut ...