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When we discuss this type of PAR, we are considering the symmetry of the actual pixel. Consider the pixel as a square box or rectangle. If it is a symmetrical square box, then the PAR or Pixel Aspect Ratio is 1:1 and in this case SAR and PAR are the same thing. However, the pixel might be asymmetrical and be elongated, making SAR and PAR dissimulator. == Displaying Video ==It is ideal if the viewing aspect ratio, the DAR, matches the SAR. For example, if a video recorded with a frame size of 1280x720 has a DAR value of 16:9 then any video player will render this video correctly in proportion.