olemus
ekraanist madalam täislaiuses videopilt, must riba ülal ja all

Oxford Reference:
letterbox format
in film and television, horizontal masking of the screen area with black bars across the top and bottom of the picture

piltlikult
http://www.videomajstor.com/slike/letterbox_aspect_1.jpg

https://www.extron.com/technology/img/aratiofig2.jpg

https://www.casablancaexpert.com/custom/postage-stamp2.jpg

ülevaateid
https://en.wikipedia.org/wiki/Letterboxing_(filming)

vt ka
- sammaspilt