1.
You can drop in text files in Original Files and New Names. As a template for New Names, your text file should work. But if you want to load in a list of file paths into Original Files then those file paths must be absolute.
2.
Unfortunately, FileBot cannot transcode video / audio / container formats.
How to import text file or spreadsheet to filebot
Re: How to import text file or spreadsheet to filebot
FileBot only works with files. Unfortunately, FileBot does not work with lines in a text file.