NAME

       yuvdenoise - Motion-Compensating-YUV4MPEG2-frame-denoiser

SYNOPSIS

       yuvdenoise [options] </dev/stdin >/dev/stdout

DESCRIPTION

       yuvdenoise  is a spatio-temporal noise-filter for YUV4MPEG2 streams. This is useful to reduce the bitrate
       needed to encode your captured movies for VCD and SVCD creation.

OPTIONS

       yuvdenoise accepts the following options:

       -g y,u,v [0..255] Gaussian filter thresholds
           This sets the thresholds for the gaussian filter.  A value of 0 disables  filtering  for  a  specific
           component  and  0,0,0  completely  disables/bypasses  the  filter.  This filter is applied before the
           temporal (-t) filter.
           (default=0,0,0)

       -m y,u,v [0..255] Pre 3D Median filter thresholds
           This sets the thresholds for the pre-processing 3D median filter.   A  value  of  0  disables  median
           filtering for a specific component and 0,0,0 completely disables/bypasses the filter.  This filter is
           applied before the temporal (-t) filter.
           (default=0,0,0)

       -r y,u,v [0..255] Renoising filter thresholds
           This  sets  the thresholds for adding random "noise" back into the video stream.  Default is disabled
           (not adding random noise).  This filter, if enabled, is run as the Blast filter (after the median and
           temporal filters).  Reasonable value is 4,8,8 but if you are working with monochrome (black and white
           movie) then 4,0,0 will speed things up by not processing the chroma planes.
           (default=0,0,0)

       -t y,u,v [0..255] Temporal noise-filter thresholds
           This sets the thresholds for the temporal noise-filter.  Values above 12 may introduce ghosting.  The
           default value for Y' (y) is often a little high and reducing it to 4 or 5 may be necessary.   If  the
           chroma  smears  or  ghosts  try  using  values  of  5 or 6 instead of the default (12).  A value of 0
           disables temporal filtering  for  the  specified  component  (0,0,0  disables/bypasses  all  temporal
           filtering).  Thus for black and white movies 4,0,0 will be faster by not denoising the chroma planes.
           (default=4,8,8)

       -M y,u,v [0..255] Post 3D Median filter thresholds
           This  sets  the  thresholds  for  the post-processing 3D median filter.  A value of 0 disables median
           filtering for a specific component and 0,0,0 completely disables/bypasses the filter.  This filter is
           applied after the temporal (-t) filter.  Reasonable value is  4,8,8  but  if  you  are  working  with
           monochrome  (black  and  white  movie)  then  4,0,0 will speed things up by not processing the chroma
           planes.
           (default=0,0,0)

HOW IT WORKS

       To Be Written (maybe) in the future.

TYPICAL USAGE AND TIPS

       As it is self-adapting to the noise-situation found in the stream you normally just can  go  without  any
       options set:

       lav2yuv my-video.avi | yuvdenoise | mpeg2enc -t 1 -o my-video.m1v

AUTHOR

       This man page was written by Stefan Fendt <stefan@lionfish.ping.de> and revised by Steven Schultz.

ADDITIONAL INFO

       If  you  have  questions,  remarks, problems or you just want to contact the developers, the main mailing
       list for the MJPEG-tools is:

       mjpeg-users@lists.sourceforge.net

       For more info, see our website at

       http://mjpeg.sourceforge.net/

SEE ALSO

       mjpegtools(1), mpeg2enc(1) lavrec(1) lav2yuv(1)

MJPEG Tools Team                                11th August 2005                                   yuvdenoise(1)