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

Calculating dependencies ... done!
Dependency resolution took 1.38 s (backtrack: 0/20).


The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by media-video/rage-0.4.0-r1::gentoo
# required by =media-video/rage-0.4.0-r1 (argument)
>=media-plugins/gst-plugins-meta-1.26.11 ffmpeg

 * In order to avoid wasting time, backtracking has terminated early
 * due to the above autounmask change(s). The --autounmask-backtrack=y
 * option can be used to force further backtracking, but there is no
 * guarantee that it will produce a solution.

!!! All ebuilds that could satisfy ">=media-libs/rlottie-0.0.1_pre20200424:=" have been masked.
!!! One of the following masked packages is required to complete your request:
- media-libs/rlottie-0.2_p20210405::gentoo (masked by: JSON license(s))
A copy of the 'JSON' license is located at '/Volumes/Disk 1/Repository/portage-git/licenses/JSON'.


(dependency required by "dev-libs/efl-1.28.1::gentoo[json]" [ebuild])
(dependency required by "media-video/rage-0.4.0-r1::gentoo" [ebuild])
(dependency required by "=media-video/rage-0.4.0-r1" [argument])
For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.