Encoder libxvid [libxvidcore MPEG-4 part 2]:
    General capabilities: none
    Threading capabilities: none
    Supported pixel formats: yuv420p
libxvid AVOptions:
  -lumi_aq           <int>        E..V....... Luminance masking AQ (from 0 to 1) (default 0)
  -variance_aq       <int>        E..V....... Variance AQ (from 0 to 1) (default 0)
  -ssim              <int>        E..V....... Show SSIM information to stdout (from 0 to 2) (default off)
     off             0            E..V.......
     avg             1            E..V.......
     frame           2            E..V.......
  -ssim_acc          <int>        E..V....... SSIM accuracy (from 0 to 4) (default 2)
  -gmc               <int>        E..V....... use GMC (from 0 to 1) (default 0)
  -me_quality        <int>        E..V....... Motion estimation quality (from 0 to 6) (default 4)
  -mpeg_quant        <int>        E..V....... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)


