Xpress Pro needs to know what video resolution you want to capture. For DV, a digital format, you usually do not want to deviate from full-resolution DV 25 411 unless you need to save drive space by capturing at single-field resolution (for NTSC or PAL video) of 15:1s.
If you do capture at lower than full-resolution quality (an offline quality), remember that at the end of your project, you'll have to recapture your footage at full resolution.
To select a video resolution for capture: