Here is updated version of amrnb and amrwb codecs http://kwizart.free.fr/fedora/nosrc/amrnb-7.0.0.0-1.nosrc.rpm http://kwizart.free.fr/fedora/nosrc/amrwb-7.0.0.2-1.nosrc.rpm As those packages are not redistributable , I'm not sure there is a need to have them imported into cvs... Instead, we should use a wiki page to explain how to build them from nosrc then rebuild ffmpeg with amr support ( if it cannot dlopen them): I've made an experimental howto on my personal blog (see the link on my rpmfusion wiki page at NicolasChauvet) Nicolas (kwizart) ps: I'm seaching a link that explain how to set a build environment in english (and others languages). This one is for French users: http://doc.fedora-fr.org/wiki/RPM_:_environnement_de_construction