yuvdenoise(1)


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)





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