New version released 18 days ago via Github. Current version in portage is 2.20.
commit 95b17a979efbb78a23484cbca6447e536552a1ac Author: Ilya Tumaykin <itumaykin@gmail.com> Date: Sat Jan 9 22:42:57 2016 +0300 media-libs/ffmpegsource: verbump to 2.22 wrt bug 564524 Gentoo-Bug: 564524 Package-Manager: portage-2.2.26