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 [AT] lionfish.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:
For more info, see our website at
SEE ALSO
mjpegtools(1), mpeg2enc(1) lavrec(1) lav2yuv(1)