Seeking advice on how to denoise a video from poor CCTV lighting I have grainy CCTV footage that will need some amount of clean up. I request for ideas on the best way to clean out the noise. I am attaching a frame extracted from the video here for hints on the specific noise cleaning I will need. Just for context, the guy in the image robbed and brutalized a vulnerable female a couple of days back. The guy wore a COVID mask thorough out the ordeal.  In the brief spell when he put the mask off, he was in a region where lighting was too poor. Hence the image that would give us a clean shot is way too grainy.
Something pretty basic to do with good generalization would be using one of the following:

The Bilateral Filter.
The Non Local Means Filter.

They are easy to implement and have a decent performance on many models.
Good resource about denoising is - Which Noise Reduction Algorithms Are Used in Commercial RAW Image Processors?