Encoder flac [FLAC (Free Lossless Audio Codec)]:
    Supported sample formats: s16 s32
FLAC encoder AVOptions:
  -lpc_coeff_precision <int>        E...A. LPC coefficient precision (from 0 to 15)
  -lpc_type          <int>        E...A. LPC algorithm (from -1 to 3)
     none                         E...A.
     fixed                        E...A.
     levinson                     E...A.
     cholesky                     E...A.
  -lpc_passes        <int>        E...A. Number of passes to use for Cholesky factorization during LPC analysis (from 1 to INT_MAX)
  -min_partition_order <int>        E...A. (from -1 to 8)
  -max_partition_order <int>        E...A. (from -1 to 8)
  -prediction_order_method <int>        E...A. Search method for selecting prediction order (from -1 to 5)
     estimation                   E...A.
     2level                       E...A.
     4level                       E...A.
     8level                       E...A.
     search                       E...A.
     log                          E...A.
  -ch_mode           <int>        E...A. Stereo decorrelation mode (from -1 to 3)
     auto                         E...A.
     indep                        E...A.
     left_side                    E...A.
     right_side                   E...A.
     mid_side                     E...A.

