If you have a Custom Scale set in Windows
Everything TVAI shows you is just wrong. Like with a 150% scale it shows you a 720p input as 1080p in the preview… no serious image or video software does that. They scale the INTERFACE, not the source images or videos you are working on.
When I import a 720 video in Adobe Premiere it doesn’t appear as 1080 in the editor because my Windows Custom Scale is set to 150%… it’s just the GUI that it’s scaled, not the inputs in the working area.