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

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

[ebuild  N     ] media-libs/libv4l-1.32.0-r1::gentoo  USE="dvb jpeg utils -bpf -doc -qt6 -tracer" 1352 KiB
[ebuild  N     ] media-tv/dtv-scan-tables-0_p20220430::gentoo  271 KiB

Total: 2 packages (2 new), Size of downloads: 1623 KiB

The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by media-tv/dtv-scan-tables-0_p20220430::gentoo
# required by =media-tv/dtv-scan-tables-0_p20220430 (argument)
>=media-libs/libv4l-1.32.0-r1 dvb