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                          E..V.....
     avg                          E..V.....
     frame                        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)


