Stable: 2.5.2
Development: 2.6-alpha3
FYI:
There are also reports of ffmpeg issues. I currently build moc with -ffmpeg, so I haven't encountered this. I am sharing this for completeness sake for Gentoo.
This was previously mentioned here:
http://moc.daper.net/node/3644
There is a discussion about compilation errors, possible patch, possible future direction in the bug report here:
https://bugs.gentoo.org/834393
(There has been additional discussion after the latest reply on this site)
Thanks!