Question about meta source

Hey I am new to this and need some help

  1. I have turned on media library and selected my movie folder on my home server. Some of my movies got the meta data but some doesn’t. 

Why is that ? Is it becomes my movies maybe don’t have the correct name ? 

Is there a way to correct that. Can I make a text file with link to ect imdb and put in the folder to get the correct data. Or what do I do ?

  1. How do I add new meta source to my wd device. 

1-  In general, yes, the filename should be as close as possible to the name listed in tmdb’s website.

2-  That’s always been an unknown.   WD has never documented it.