The 77EC980 supports a better video mode than most similar spec televisions that have been available for more than two years. This TV supports a 2160p video mode, whereas most 4K and 8K TVs that are a comparable age to it support a 1080p video mode. In addition, this LG TV support 480p and 576p and 720p video modes.
This TV's video mode (2160p) is actually the best supported video mode across all televisions that have been around for a similar time to the 77EC980.
The worst supported video mode across comparable types of TV is 480p.