These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libudfread-1.2.0-r1:0/3::gentoo  32 KiB
[ebuild  N     ] media-libs/libbluray-1.4.1:0/3::gentoo  USE="fontconfig truetype xml -aacs -bdplus -java -static-libs -utils" 458 KiB

Total: 2 packages (2 new), Size of downloads: 490 KiB