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)

