Question: is ntsc interlaced or progressive?
Answer: There were two main interlaced scan systems in use: NTSC and PAL. NTSC is based on a system of 525-lines, 60 fields/30 frames-per-second at 60Hz for transmission and display of video images. Each frame is split into two fields of 262 lines. The lines are sent alternately and then displayed as an interlaced image.