The stair-step or sawtooth effect seen on lines that are not horizontal or vertical or the edge of objects in digital displays. Also known as aliasing. Smoothing and antialiasing techniques can reduce the effect of aliasing.

Abrupt variations in signal amplitude or timing that cause reproduction instability in audio, video and data. Usually caused by bandwidth limitations or impedance termination issues that can sometimes be caused by the cable and/or connections you are using. Power supplies can also be a source of this problem.

Joint Photographic Experts Group. Name of association that created the image file standard of the same name. A lossy compression scheme for storing high quality, full-color images. Also used as a video format under the guise M-JPEG of which a variant is used for DV video.

Apparent stutter of on-screen movement. Commonly caused by 3:2 pulldown where movie frames are on screen for differing times due to frame rate translations. Also occurs on PAL to NTSC conversions. Solved by 3:3 pulldown.