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:
For more info, see our website at
SEE ALSO
mjpegtools(1),
mpeg2enc(1)
lavrec(1)
lav2yuv(1)