I do, but gstreamer is probably down a long rabbit hole of dependencies, so I'd approach that from a slightly different angle: BuildRoot (which does support ct-ng TCs, I've used it a few weeks ago to
build X stuff for KOReader because I couldn't be arsed to deal with it manually ;p).
In this specific instance, though, the drawback of not doing it manually is that BR won't be shipping prehistoric code (i.e., you'll end with with something adhering to gstreamer's 1.0 API/ABI, not 0.10).
You could probably still piggy-back on the BR sysroot to just end up having to build an old gstreamer manually, though.