I was able to successfully compile gtkpod from SVN on Fesity and Gusty by installing libmp4v2-dev from the Debian repositories, which depended on libmp4v2, libmpeg4ip, and libmpeg4ip-dev.
I was able to successfully compile gtkpod from SVN on Fesity and Gusty by installing libmp4v2-dev from the Debian repositories, which depended on libmp4v2, libmpeg4ip, and libmpeg4ip-dev.