IPCS Word(s) of the Day: Aspect RatioBy Garrett Smith May 1, 2008 IPCS Terminology 0 comments Aspect Ratio = The ratio of the visible picture height to the width. SDTV aspect ratio is typically 4:3, whereas HDTV aspect ratio is typically 4:3 or 16:9. Related Posts The Difference Between H.264 and MxPEG Axis Naming Convention Bigger (Resolution) Means Better (Quality) Vivotek Decoded TripWire: The Wired Network