Hi TChauhan,
no, you got this wrong. With T&B encoded 3D movie files, you reduce the vertical resolution for each eye (odd lines to one eye, even lines to the other eye).
Thus:
- screen was 1920x1080
- video file was 1920x1080
- within the video file, odd lines belong to one eye, even lines belong to the other eye, thus 1920x540 for each eye
Best,
Frank.