I did a quick Google search and found this article [1] ... I recall seeing a website that was listing Blu-ray titles with true-1080p but I can't find it right now. Cable does something similar by highly compressing HD content.
If you plan to watch most of your movies in 4K, you probably should wait about 10 years before buying a new TV... the movie industry doesn't adapt very quickly and cable compresses everything so much that you can't even get true 1080 even if they say that they have HD
I tried to convert my WP to Hugo after seeing your comment, using the WP's export plugin (https://github.com/SchumacherFM/wordpress-to-hugo-exporter) but so far my biggest problem is that the link references that were created in the export process don't seem to work properly, for example:
that should be considered a backdoor, unless they make their findings about quantum computing public (the same goes for undisclosed "0-day" bugs that they discover).
Probably besides your point but: Instead of cropping that cat picture, they set a custom size in html that doesn't match the picture's ratio... if you want to see the cat's real proportions, right click on the picture and click view image.
1. http://conversation.which.co.uk/technology/many-blu-rays-no-...