http://bambuser.com/opensource may be useful.

 http://sourceforge.net/projects/ffmpeg4android/ may be useful

 http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=5&t=1005&p=4137&hilit=android#p4137 describes how to strip .so.5 type names, if you want to go the all dll route (FWIW, never asked core if there is another way...)