Great job -1. The contraption you are using to do this is pretty amazing! As Harmy mentioned, the video is interlaced for some reason, but otherwise looks great!

Regarding higher than 1920x1080 resolution, on my 2560x1600 monitor, my WQHD version of my trailer is slightly noticeably better (just a bit clearer looking), but it is fairly minor. If it was on 70mm film, that would probably make a big difference (70mm does make a difference with blu-ray movies such as the Sound of Music which is stunning looking).