How many resolution lines are native to DVD for NTSC?

How many resolution lines are native to DVD for NTSC?

• A. 720 Resolution lines
• B. 480 Resolution lines
• C. 1080 Resolution lines
• D. 360 Resolution lines

Answer: (B)

NTSC DVDs use standard-definition video with 480 lines of visible image per frame. A DVD in NTSC format is encoded at 720×480, where 720 is the horizontal resolution (width) and 480 is the number of active, visible lines (the total lines per frame is 525, with 35 lines of vertical blanking). So the native resolution lines for NTSC on DVD are 480. The other options refer to different standards (1080 for HD) or are not the active-line count for NTSC DVDs.

NTSC DVDs use standard-definition video with 480 lines of visible image per frame. A DVD in NTSC format is encoded at 720×480, where 720 is the horizontal resolution (width) and 480 is the number of active, visible lines (the total lines per frame is 525, with 35 lines of vertical blanking). So the native resolution lines for NTSC on DVD are 480. The other options refer to different standards (1080 for HD) or are not the active-line count for NTSC DVDs.