---
name: "yuvycsnoise"
section: "1"
platform: "linux"
package: "mjpegtools"
version: "2.2.1-4"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/yuvycsnoise"
---

# yuvycsnoise(1)

Noise filter specialized for NTSC Y/C separation noise

## NAME

yuvycsnoise - Noise filter specialized for NTSC Y/C separation noise

## SYNOPSIS

**yuvycsnoise** \[**-t**\] \[**-m t**\|**b**\|**i**\|**c**\] \[**-S** *MIN*\] \[**-T** *ERRT*\[**,***MAXT*\]\] \[**-B** *ERRB*\[**,***MAXB*\]\] \[**-I** *ERRI*\[**,***MAXI*\]\] \[**-C** *ERRC*\[**,***MAXC*\]\]

## DESCRIPTION

If video capture hardware has only a poor Y/C separator, at vertical stripe (especially red/blue), noises appear which seem checker flag and bright/dark invert per 1 frame. **yuvycsnoise** reduces noises of this type.

## OPTIONS

**yuvycsnoise** accepts the following options:

- **-t**

  test. Instead of noise reduction, noises will be marked as black pixel.

- **-m** *METHOD*

  (default: **tbic**).\
   Select method. *METHOD* is string in which each character mean method.\
    **t**: 'triframe' method of luma noise reduction.\
    **b**: 'biframe' method of luma noise reduction.\
    **i**: 'infield' method of luma noise reduction.\
    **c**: chroma noise reduction. use 3 frames as 'triframe'.

- **-S** *MIN*

  (default: 4).\
   Set minimum threshold of luma/chroma difference which is treated as noise.

- **-T** *ERRT***\[,***MAXT\]*

  (default: 32,255).

- **-B** *ERRB***\[,***MAXB\]*

  (default: 32,255).

- **-I** *ERRI***\[,***MAXI\]*

  (default: 16,255).

- **-C** *ERRC***\[,***MAXC\]*

  (default: 12,255).\
   Set threshold of luma/chroma difference of each methods. *ERRx* is maximum error of luma/chroma of pixels around target pixel, which should be same if target contain noise. *MAXx* is maximum threshold of luma/chroma difference of target pixel from luma/chroma after noise reduced.

## AUTHOR

**yuvycsnoise** was written by Kawamata/Hitoshi.\
 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)](/mjpegtools/1.md)