--SPSNR_NN flag not responding

[char-tan]

Hi there,

I'm trying to use 360Lib for end-to-end metrics.

In my case input==output (no conversion).

Adding the --SPSNR_NN flag doesn't add anything to the output.

For what is worth, --SPSNR_I adds relevant columns so I'm wondering if it's a specific issue for --SPSNR_NN.

Is it possible I'm making a mistake here? Any help much appreciated.