SDPn

SDPn, also known as Standard Definition progressive scan, refers to a video format that displays images in a single pass rather than interlaced. In interlaced video, each frame is split into two fields, odd lines and even lines, which are displayed sequentially. This can sometimes lead to motion artifacts, especially noticeable on older CRT televisions. SDPn, however, displays all the lines of a single frame at once, resulting in a smoother and sharper image, particularly during fast motion. This progressive scan method is a hallmark of High Definition (HD) video, but it has also been applied to Standard Definition (SD) content to improve its visual quality. SDPn is commonly found in digital television broadcasts, DVDs, and some older digital video cameras. While High Definition progressive scan (like 720p or 1080p) is now the standard for most modern video content, SDPn represented a significant improvement over interlaced SD video for many viewers and viewing devices. The primary benefit of SDPn is the elimination of "combing" or "interlace flicker" that can occur with interlaced footage.