I have run emerge --depclean and after that mplayer complained about missing libtermcap.so. I guess it should be added as a dependency of mplayer. Reproducible: Always Steps to Reproduce:
Did you read the big fat warning about emerge depclean and the instructions in there? Also revdep-rebuild is a useful tool.
Yes, sure I read the warning. Seems like mplayer uses libtermcap as an optional library but can be compiled perfectly without it. re-emerging it solved the problem. Sorry for wasting time.