The denoiser can be run from the command line on frames that have already been rendered to disc in the condition that the required AOVs are correct

usage:

denoise_batch [-h] [-v] [-a ASYMMETRY] [-o OUTPUT] [-cf] [-f] [-j] files [files ...]



positional arguments:



filesImage files to be denoised. Can accept a glob as input. Ex: foo.*.exr



optional arguments:




-h,-h,show this help message and exit
-v,--verboseVerbose output for debugging.

--include-aovsInclude AOVs in the output image for debugging
-a ASYMMETRY,--asymmetry ASYMMETRYcontrols the asymmetry value, 0 is the best quality, and higher values encourage the denoiser to avoid overblurring, leading to weaker denoising.
-o OUTPUT,--output OUTPUTThe output directory for the denoised images. The JSON config file(s) will also be written to this directory. 

If not specified, we write into a subdirectory called "denoised", from the image path.
-cf,--crossframeDo crossframe denoising
-f,--flowWhether to compute optical flow.
-j,--json If provided, use the first input file as the configuration JSON file. All other files and options are ignored.


for example :
$RMANTREE/bin/denoise_batch -o /path/to/directory/for/denoised/images imagename.*.exr