Hi,

I'm trying to use temporal denoising on a render rendered out of Karma CPU but I'm running into the following error message.


Unable to find beauty pass in previous frame outfile_denoised.1001.exr


I'm running the idenoise.exe located in the 'Bin' folder in the Houdini install directory in a Windows command prompt.

These are the arguments I'm using in the command prompt:

C:\Program Files\Side Effects Software\Houdini 20.0.644\bin\idenoise.exe infile.1002.exr outfile_denoised.1002.exr --denoiser optix --albedo albedo --normal N --motionvectors motionvectors --prevframe outfile_denoised.1001.exr --aovs rgba


The above command works to denoise an image if I don't specify the arguments required for temporal denoising.


Any help with this problem is greatly appreciated.

Hi @AK1176

did you ever figure this out? I am runing into a similar issue where once i add the temporal arguments i get an error like

idenoise F:/projects/renderpass_rnd/renders/images/renderpass_010/v018/exr/main/renderpass_010_v018.1002.exr F:/projects/renderpass_rnd/renders/images/renderpass_010/v018/exr/main/renderpass_010_v018.den.1002.exr -d optix -n N -a albedo -m motionvectors -p F:/projects/renderpass_rnd/renders/images/renderpass_010/v018/exr/main/renderpass_010_v018.den.1001.exr --aovs C Cf color C_emission C_Untagged_Lights combineddiffuse combinedglossyreflection combinedvolume
Error: failed to apply denoiser on combineddiffuse, received: OPTIX_ERROR_INVALID_VALUE