Problem:
I need a video to have a higher resolution so that I can use it with a 3rd party web app?
Solution:
Download the handbrakecli tool for Windows and then run the below command:
"C:\Program Files\Handbrake\HandBrakecli.exe" -i "C:\Temp\myvid01.mp4" -o "C:\Temp\myvid02.mp4" -E ca_aac -e x264 -q 20 -a 1 -A "5.1 Surround Sound" -B auto -R 48000 -6 stereo -w 1280 -l 720 --non-anamorphic --no-keep-display-aspect
This forces my lower resolution video to have a resolution of 1280 x 720