> > What's the difference between > > -lavcopts acodec=mp3:abitrate=128 and > > These are the options for the lavc audio encoder. > > > -lameopts cbr:br=128 > > And these are for libmp3lame encoder. > > > Both options are using the same library, aren't they. lame > > No, they aren't. Which one produces the highest quality? Can we know it?