uyvy & jit.qt.record

I have some video (say 640×480) that gets converted to uyvy (thus 320×480). Should i now set my jit.qt.record to 320×480 or still 640×480 when using uyvy for it’s color mode.

I think 320×480 is the way to go, but i am just checking… Any ideas? I don’t want to lose quality off course.