AniDB naming is supported for OP/EDs are supported and they are mapped as season 0 normally.
If you move your extras to a subfolder named “Extras” they will be skipped
the old alpha version of my scanner did support .plexignore, not the new one.
Plex scanner supports .plexignore files too…
I have no plan to add the support, the function is marginal in its use, and i support most extras files and users can move them to “Extras” folder to skip them…