Mjpegtools arguments:

   -4|--reduction-4x4 1 .. 4
   -2|--reduction-2x2 1 .. 4

      These options control how radical  the  encoder  is  in  throwing  away
      apparently  poor  candidate estimates during motion estimation.  A set-
      ting of 1 means very few blocks are discarded  early  which  makes  for
      slow  encoding but quality as good as it gets. A setting of 4 makes for
      fast encoding but can impact quality.  The -4 flag controls  discarding
      during  the  initial 4*4 sub-sampled search stage, the -2 flag controls
      discarding during the secondary 2*2 sub-sampled stage.

      These flags  are  useful  as  the  speed  quality  trade-off  is
      markedly  different  depending on which CPU you have.  On modern
      machines the impact on speed is  around  a  factor  2  on  older
      machines  a factor 3.  The impact on quality is around 10% quan-
      tisation (0.2 of a bit of precision in encoding textures).   For
      most  purposes the default settings will be fine.  However on P-
      III Katmai etc -4 2 -2 1 gives a good near-optimum quality  set-
      ting with reasonably speed.

-H|--keep-hf   (The manual page says -h but the argument from the command line
                is actually -H)
                                                                                
       Setting this flag makes  the  encoder  encode  as  much  high-frequency
       information  as possible.   This is a good setting for maximising qual-
       ity at VCD resolution with good quality low-noise source material.   It
       can also help with "swimmy" material if you can spare the bit-rate!

                                                                                

Transcode modules:

   msharpen - VirtualDub’s MSharpen Filter
       msharpen was written by Donald Graft, William Hawkins. The  version
       documented  here  is (1.0) (2003-07-17). This is a video filter. It
       can handle RGB and YUV mode. It is a post-processing only filter.

       · strength = %d  [default 100]
          How much  of the effect
       · threshold = %d  [default 10]
          How close a pixel must be to the brightest or dimmest  pixel  to
          be mapped
       · highq = %d  [default 1]
          Tradeoff speed for quality of detail detection
       · mask = %d  [default 0]
          Areas to be sharpened are shown in white

              This  plugin implements an unusual concept in spatial sharp-
              ening.  Although designed specifically for  anime,  it  also
              works  well  with normal video. The filter is very effective
              at sharpening important edges without amplifying noise.

                    * Strength ’strength’ (0-255) [100]
                  This is the strength of the sharpening to be applied  to
              the edge detail areas. It is applied only to the edge detail
              areas as determined by the ’threshold’  parameter.  Strength
              255 is the strongest sharpening.
                * Threshold ’threshold’ (0-255) [10]
                  This  parameter  determines  what  is  detected  as edge
              detail and thus sharpened. To see  what  edge  detail  areas
              will be sharpened, use the ’mask’ parameter.
                * Mask ’mask’ (0-1) [0]
                  When set to true, the areas to be sharpened are shown in
              white against a black background. Use this to set the  level
              of  detail to be sharpened. This function also makes a basic
              edge detection filter.
                * HighQ ’highq’ (0-1) [1]
                  This parameter lets you tradeoff speed  for  quality  of
              detail  detection. Set it to true for the best detail detec-
              tion. Set it to false for maximum speed.
