Feature Suggestions Regarding Automatic Filename Generation

[Selur]

Letting users specify RegExs is a bad since most users can't use them. So this would only be an additional option for advanced users.
What you specified there are just replacement so an additional option could be added:

--Separator="#" --Replacements="kb/s%Kbps#:%¦"

this would tell the Renamer to replace "kb/s" with "Kbps" and ":" with "¦" inside part of the additions string.
So

640 pixels_352 pixels_722 kb/s_25.000 FPS

from before, would end up ad:

640 pixels_352 pixels_722 Kbps/s_25.000 FPS

As a side note: Replacing "kb/s" with "Kbps" is a bad thing since the first implies k = 1000 and the second K = 1024. (see: https://en.wikipedia.org/wiki/Kilobit)

Cu Selur