pixelförhållande
Pixelförhållande, or pixel aspect ratio, refers to the ratio of a pixel's width to its height. In digital imaging, pixels are often treated as square by default, meaning their width and height are equal. However, in some older video formats and displays, pixels were not square. For example, in standard definition (SD) video, pixels might have been rectangular, being wider than they were tall.
When displaying images or video with non-square pixels on a square-pixel display, the image can appear distorted.
To correct for these distortions, display devices or software use the pixel aspect ratio information associated