Hello, here are some patches for live ebuild.
Created attachment 247273 [details, diff] mplayer-9999.p00-amruri.patch Remove obsolete AMR_URI variable. Opencore-amr is used for rather long time now.
Created attachment 247275 [details, diff] mplayer-9999.p01-rtmpdump.patch Add support for RTMPDump streaming media client, it is already in the portage tree.
Created attachment 247277 [details, diff] mplayer-9999.p02-nosvga.patch Remove svga completely: both variable and svgalib-helper. Helper should not be used unconditionally at any case.
Fixed in main tree. Thanks for report and patches.