I just started rendering out my project file to PNG in 2560x1440 resolution, which worked fine.
These are the settings:
But when combining the PNGs to video format, I got the issue that the video file is not adapting to the full screen mode. You always see a black frame and I do not know why that is.
The settings with the Video Sequencer:
When I render in 1920 x 1080, the video fills the full screen with no black frame on the outside.
Does anyone have a clue what is going wrong here?