Encoder libtwolame [libtwolame MP2 (MPEG audio layer 2)]:
    Supported sample rates: 16000 22050 24000 32000 44100 48000
    Supported sample formats: flt fltp s16 s16p
    Supported channel layouts: mono stereo
libtwolame encoder AVOptions:
-mode              <int>        E...A. Mpeg Mode (from -1 to 3)
   auto                         E...A.
   stereo                       E...A.
   joint_stereo                 E...A.
   dual_channel                 E...A.
   mono                         E...A.
-psymodel          <int>        E...A. Psychoacoustic Model (from -1 to 4)
-energy_levels     <int>        E...A. enable energy levels (from 0 to 1)
-error_protection  <int>        E...A. enable CRC error protection (from 0 to 1)
-copyright         <int>        E...A. set MPEG Audio Copyright flag (from 0 to 1)
-original          <int>        E...A. set MPEG Audio Original flag (from 0 to 1)

