This is a high precision/quality 3d denoise filter. It aims to reduce image noise, producing smooth images and making still images really still. It should enhance compressibility.
It accepts the following optional parameters:
- luma_spatial
-
A non-negative floating point number which specifies spatial luma strength. It defaults to 4.0.
- chroma_spatial
-
A non-negative floating point number which specifies spatial chroma strength. It defaults to 3.0*luma_spatial/4.0.
- luma_tmp
-
A floating point number which specifies luma temporal strength. It defaults to 6.0*luma_spatial/4.0.
- chroma_tmp
-
A floating point number which specifies chroma temporal strength. It defaults to luma_tmp*chroma_spatial/luma_spatial.
Commands
This filter supports same commands as options. The command accepts the same syntax of the corresponding option.
If the specified expression is not valid, it is kept at its current value.