Explanation of terms and acronyms related to the media and broadcasting world. Updated every week!

SD (Standard Definition)

SD (Standard Definition) video specifies the video and audio codecs and file format that allows users to watch video on several electronic devices built to SD standards. SD video supports different formats, including VC-1, H.264, MPEG-4 and MPEG-2. Standard definition has always been a 4:3 aspect ratio with a resolution of 640 × 480 pixels.