Comment 32 for bug 197957

Mike,

ac3_fixed is just the fixed point implementation within libavcodec. 'avconv -formats E' will show the list of current codecs with encoder support. You'll see it is there, but I am guessing this is accidental since it is being built implicitly based on the parameters to configure in debian/confflags in the debianized libav source package. If you look carefully through it, you'll see that other non-free formats are explicitly disabled. So what probably happened is whoever wrote the confflags for debian/rules probably forgot to handle the situation for ac3 when the package was refactored since it wasn't enabled last I checked.

By the way, AC-3 = A52 = DD.