4.2

The ratio between an image’s width and height
when it is stored. Storage aspect ratio can
differ from display aspect ratio (DAR) resulting
in a file that must be stretched or squeezed
during playback to appear correct. This
disparity can allow a camera format limited to
4:3 recording to successfully record a
widescreen image by “squeezing” the image
during recording. If the image is unsqueezed
during playback, it will display correctly in its
widescreen aspect ratio. This is called an
anamorphic image.
Storage aspect ratio (SAR)