480i
The digitally transmitted horizontal resolution is often 720 samples (including 16 samples for both horizontal sync and horizontal blanking) or 704 visible pixels that has an aspect ratio of 4:3 (with vertically rectangular pixels) which means a display resolution of 640 × 480 (VGA); that is standard-definition television (shortened as SDTV) with a 4:3 aspect ratio (with square pixels).