Muxer opus [Ogg Opus]:
    Common extensions: opus.
    Mime type: audio/ogg.
    Default audio codec: opus.
Ogg Opus muxer AVOptions:
  -serial_offset     <int>        E....... serial number offset (from 0 to INT_MAX) (default 0)
  -oggpagesize       <int>        E....... Set preferred Ogg page size. (from 0 to 65025) (default 0)
  -pagesize          <int>        E....... preferred page size in bytes (deprecated) (from 0 to 65025) (default 0)
  -page_duration     <int64>      E....... preferred page duration, in microseconds (from 0 to I64_MAX) (default 1e+006)


