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

Calculating dependencies ... done!
Dependency resolution took 1.44 s (backtrack: 0/20).

[ebuild  N     ] x11-misc/util-macros-1.20.2::gentoo  82 KiB
[ebuild  N     ] dev-libs/libunibreak-8.0:0/8::gentoo  USE="-doc -man -static-libs -test" 1063 KiB
[ebuild  N     ] media-libs/alsa-topology-conf-1.2.5.1-r1::gentoo  USE="-verify-sig" 12 KiB
[ebuild  N     ] media-libs/alsa-ucm-conf-1.2.16.1::gentoo  USE="-verify-sig" 83 KiB
[ebuild  N     ] x11-misc/xkeyboard-config-2.48::gentoo  USE="-test" 931 KiB
[ebuild  N     ] media-libs/alsa-lib-1.2.16.1::gentoo  USE="python -debug -doc -verify-sig" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13 (-python3_15)" 1104 KiB
[ebuild  N     ] media-libs/dav1d-1.5.4:0/7::gentoo  USE="8bit 10bit asm -test -xxhash" 1015 KiB
[ebuild  N     ] media-libs/x264-0.0.20240513-r1:0/164::gentoo  USE="interlaced -opencl -static-libs" 822 KiB
[ebuild  N     ] media-libs/x265-4.3:0/217::gentoo  USE="10bit 12bit cet -numa -test -vmaf" 2005 KiB
[ebuild  N     ] media-libs/xvid-1.3.7-r2::gentoo  USE="-examples" 683 KiB
[ebuild  N     ] x11-apps/xauth-1.1.5::gentoo  162 KiB
[ebuild  N     ] x11-libs/libxkbfile-1.2.0::gentoo  57 KiB
[ebuild  N     ] x11-libs/libXcursor-1.2.3::gentoo  USE="-doc" 286 KiB
[ebuild  N     ] x11-libs/libxcvt-0.1.3::gentoo  10 KiB
[ebuild  N     ] x11-libs/libXdamage-1.1.7::gentoo  260 KiB
[ebuild  N     ] x11-libs/libXfont2-2.0.9::gentoo  USE="bzip2 truetype -doc" 468 KiB
[ebuild  N     ] x11-libs/libXtst-1.2.5::gentoo  USE="-doc" 285 KiB
[ebuild  N     ] media-fonts/font-util-1.4.2::gentoo  150 KiB
[ebuild  N     ] x11-libs/libXinerama-1.1.6::gentoo  USE="-doc" 263 KiB
[ebuild  N     ] x11-libs/libXv-1.0.13::gentoo  USE="-doc" 275 KiB
[ebuild  N     ] media-libs/libass-0.17.5-r1:0/9::gentoo  USE="fontconfig libunibreak -test -verify-sig" 450 KiB
[ebuild  N     ] net-libs/libssh-0.12.2:0/4::gentoo  USE="sftp zlib -debug -examples -fido2 -gssapi -mbedtls -pcap -server -static-libs -test -verify-sig" 742 KiB
[ebuild  N     ] x11-misc/xbitmaps-1.1.4::gentoo  112 KiB
[ebuild  N     ] x11-apps/xrdb-1.2.3-r2::gentoo  141 KiB
[ebuild  N     ] x11-apps/xinit-1.4.4::gentoo  USE="-twm" 159 KiB
[ebuild  N     ] x11-apps/xkbcomp-1.5.0-r2::gentoo  243 KiB
[ebuild  N     ] x11-apps/xsetroot-1.1.4::gentoo  127 KiB
[ebuild  N     ] media-video/ffmpeg-8.1.3:0/60.62.62::gentoo  USE="X alsa bzip2 cairo dav1d drm fontconfig gmp gnutls gpl jpeg2k libass opengl openssl ssh truetype x264 x265 xml xvid zlib -amf -amr -amrenc (-appkit) -bluray -bs2b -cdio -chromaprint -chromium -codec2 -cuda-clang -doc -dvd -fdk -flite -frei0r -fribidi -gcrypt -gme -gsm -iec61883 -ieee1394 -jack -jpegxl -kvazaar -ladspa -lame -lcms -libaom -libaribb24 -libcaca -libilbc -liblc3 -libplacebo -librtmp -libsoxr -lv2 -lzma -modplug -nvenc -ocr -openal -opencl -opencolorio -openh264 -openmpt -opus -pulseaudio -qrcode -qsv -quirc -rabbitmq -rav1e -rist -rubberband -samba -sdl -snappy -sndio -soc -sofa -speex -srt -svg -svt-av1 -theora -twolame -v4l -vaapi -vdpau -verify-sig -vidstab -vmaf -vorbis -vpx -vulkan -webp -zeromq -zimg -zvbi" 11458 KiB
[ebuild  N     ] x11-libs/fltk-1.3.8:1::gentoo  USE="cairo opengl (static-libs) threads xft xinerama -debug -doc -examples -games" 5211 KiB
[ebuild  N     ] net-misc/tigervnc-1.16.2::gentoo  USE="drm nls opengl server viewer -dri3 -gnutls -java -pwquality -test -wayland -xinerama" 7105 KiB

Total: 30 packages (30 new), Size of downloads: 35751 KiB