Glossary

Representation of an image width to its height. A general notation is the form of X:Y where X represent the image width and Y represent the image height.

While there are several video standards that are currently used in video applications, it is necessary to keep aspect ratio stable when converting from one display standard to another. Avoiding that may cause the resultant frame to look distorted, squeezed or stretched.

Common aspect ratios for video applications are 4:3 (usually in standard definition) and 16:9 (usually in high definition).