Decoder ac3 [ATSC A/52A (AC-3)]:
    General capabilities: dr1 
    Threading capabilities: none
    Supported sample formats: fltp
AC3 decoder AVOptions:
  -drc_scale         <float>      .D..A... percentage of dynamic range compression to apply (from 0 to 6) (default 1)
  -heavy_compr       <boolean>    .D..A... enable heavy dynamic range compression (default false)
  -target_level      <int>        .D..A... target level in -dBFS (0 not applied) (from -31 to 0) (default 0)


