Created attachment 73077 [details]
Full Log output
Libav-1.0 compilation fails for me because of:
../../gst-libs/ext/libav/libavformat/libavformat.a: could not read symbols: Archive has no index; run ranlib to add one
collect2: ld returned 1 exit status
Full log is attached
Could you try with the master branch of gst-libav? Just change "commit" to "upstream/master" in recipes/gst-libav1.0.recipe and then do ./cerbero-uninstalled buildone gst-libav1.0
This should be fixed now.