In today’s computer and video displays, we have to contend with a variety of input connectors and cables as well a tonne of resolutions and aspect ratios. I came across an excellent chart that compares each resolution and aspect ratio in an easy to understand layout.
The chart here came from the Wikipedia website
Note: The resolution for PAL is typically listed as 720×576, which is the 1.067 aspect pixel ratio. The square APR for PAL is 768×576.
Similarly, the resolution for NTSC is typically listed as 720×480; of which the first and last 8 columns are “overscan” to avoid analog transients, and not normally visible. “Square-pixel” NTSC would be 640×480. NTSC and PAL screens are both approximately 4:3.
