As a purely intraframe compression scheme, the image quality of M-JPEG is directly a function of each video frame's static (spatial) complexity. Frames with large smooth transitions or monotone surfaces compress well and are more likely to hold their original details with few visible compression artifacts. Frames exhibiting complex textures, fine curves and lines (such as writing on a newspaper) are prone to exhibit discrete cosine transform (DCT) artifacts such as ringing, smudging and macroblocking. M-JPEG-compressed video is also insensitive to motion complexity, i.e. variation over time. It is neither hindered by highly random motion (such as the water-surface turbulence in a large waterfall), nor helped by the absence of motion (such as static landscape shot by tripod), which are two opposite extremes commonly used to test interframe video formats.