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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] media-video/mjpg-streamer-0_pre20200524-r2::gentoo  USE="input-file output-http (-http-management) -input-control -input-http -input-ptp2 -input-testpicture -input-uvc -output-autofocus -output-file -output-rtsp -output-udp -output-viewer -output-zmqserver -www -wxp-compat" 695 KiB

Total: 1 package (1 new), Size of downloads: 695 KiB