The identifier SSNI-987-RM refers to a specific adult video production from the Japanese studio S1 No. 1 Style , featuring actress Yua Mikami

In many countries, faces, license plates, or explicit content are blurred using “mosaic” — a fixed grid of large squares (e.g., 32×32 pixels) that replace the original detail. Reducing this type of mosaic is extremely challenging because the original data is completely destroyed.

: Reducing mosaicism in human embryos using CRISPR-Cas9 .

After scouring obscure video processing forums and GitHub gists, the string appears to be a red herring. However, it could be: