olemus
ekraanist kitsam täiskõrguses videopilt,
mustad ribad vasakul ja paremal
= a technique for displaying a video recorded in portrait orientation on a wider screen by reducing its size but retaining the aspect ratio, with black bands filling the screen to the right and left of the picture

ülevaateid
https://outdoormovieprojectors.com/wp-content/uploads/2018/01/letterbox-effect.png

https://en.wikipedia.org/wiki/Pillarbox

piltlikult
https://image.slidesharecdn.com/firstlecture-130822165008-phpapp01/95/digital-media-production-first-lecture-18-638.jpg

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT-gmRaKCMnFQs-BJZFQAEwbigP6EgnLIWvs6H_-yBTJ6U_wsdVeoUKu13aigYV5MKzc08&usqp=CAU

vt ka
- formaadisuhe
- ümbrikpilt