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

Calculating dependencies ... done!
Dependency resolution took 1.17 s (backtrack: 0/20).

[ebuild  N     ] media-video/mpgtx-1.3.1-r2::gentoo  88 KiB
[ebuild  N     ] media-libs/libdvdcss-1.4.3:1.2::gentoo  USE="-doc" 380 KiB
[ebuild  N     ] dev-perl/Tk-804.36.0-r5::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 6861 KiB
[ebuild  N     ] media-libs/libdvdread-7.1.1:0/8::gentoo  USE="css -static-libs" 101 KiB
[ebuild  N     ] dev-perl/Tk-JPEG-Lite-2.15.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 21 KiB
[ebuild  N     ] x11-misc/makedepend-1.0.10::gentoo  148 KiB
[ebuild  N     ] media-gfx/imagemagick-7.1.2.32:0/7.1.2-18::gentoo  USE="X bzip2 cxx fontconfig jpeg jpeg2k openmp png tiff truetype zlib -corefonts -djvu -fftw -fpx -graphviz -hardened -hdri -heif -jbig -jpegxl -lcms -lqr -lzma -opencl -openexr -pango -perl -postscript -q8 -q32 -raw -static-libs -svg -test -verify-sig -webp -wmf -xml -zip" PERL_FEATURES="ithreads (-debug) -quadmath" 9939 KiB
[ebuild  N     ] media-video/dvdauthor-0.7.2-r4::gentoo  USE="imagemagick -graphicsmagick" 634 KiB
[ebuild  N     ] app-cdr/cdrtools-3.02_alpha09-r5::gentoo  USE="acl filecaps nls unicode -caps (-selinux)" 2107 KiB
[ebuild  N     ] media-video/lsdvd-0.17::gentoo  97 KiB
[ebuild  N     ] app-cdr/dvd+rw-tools-7.1-r4::gentoo  138 KiB
[ebuild  N     ] media-video/streamdvd-0.4-r2::gentoo  USE="X" 150 KiB
[ebuild  N     ] media-video/lxdvdrip-1.77-r2::gentoo  698 KiB

Total: 13 packages (13 new), Size of downloads: 21355 KiB