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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libudfread-1.2.0-r1:0/3::gentoo  32 KiB
[ebuild  N     ] media-libs/libbluray-1.3.4-r3:0/2::gentoo  USE="fontconfig truetype xml -aacs -bdplus -java -utils" 739 KiB

Total: 2 packages (2 new), Size of downloads: 771 KiB