What pixel ratio is widely used for widescreen TVs?

The pixel ratio widely used for widescreen TVs is 16:9. This aspect ratio is the standard for high-definition television, as well as for most modern video formats and streaming services. It provides a wider view compared to the traditional 4:3 aspect ratio, allowing for a more immersive viewing experience, particularly when watching movies or playing video games that are produced in widescreen format.

The prevalence of 16:9 in modern video production and broadcasting means that content is often optimized for this ratio, ensuring that viewers get the best quality and visual experience. This aspect ratio balances the need for a cinematic format with practicality, making it suitable for both TV broadcasting and online streaming.

In contrast, the 4:3 aspect ratio is more traditional, associated with older TV sets and standard-definition content. The 21:9 ratio is wider than 16:9 and is typically used in cinematic formats or ultra-wide displays, but it is not standard for most TV broadcasts. The 1:1 ratio represents square images, which is not suitable for widescreen media. Therefore, 16:9 has become the prominent choice for widescreen televisions.