Milass 008 4k 16x9 2x9 1x1 2x9 Verified

In motion graphics, a 4K master might be tiled into a 2×9 grid of smaller animations (2 rows, 9 columns), with each cell being 16:9 or 1:1. This is rare but technically possible for UI/UX prototyping.

If you have a candidate file, use ffmpeg -i file.name to check resolution, aspect ratio, and bitrate.
For "verified" status, look for: milass 008 4k 16x9 2x9 1x1 2x9 verified

This is the weird one. While most ultrawides are 21x9, Milass is pushing a 2x9 ratio (essentially a very long strip). In motion graphics, a 4K master might be

The product listing heavily emphasizes the word "Verified." After testing, we believe this refers to two things: If you have a candidate file, use ffmpeg -i file