inline renaming: how to add same text to many files

[ctygehtuk]

Is there any way to rename (inline) files by appending some text before or after existing?

For example, I have two files:
adsf.mp4
asdf.jpeg

I want quickly rename them by appending some text after the existing name without extra tools via inline renaming.
Renaming mask: *_some_comment.*
I'm expecting:
adsf_some_comment.mp4
asdf_some_comment.jpeg

But I'm getting the same names.

I can use another mask: ????????????????????_some_comment.* and it works, but too complicated.

I wonder if I'm missing some other possibilities?

[ZoSTeR]

Just use the Multi-Rename Tool

Select files
Press (Ctrl)+(m)
Type your additional text after the [N]
Start (Enter)
Close (Esc)

[ctygehtuk]

Just use the Multi-Rename Tool

Select files
Press (Ctrl)+(m)
Type your additional text after the [N]
Start (Enter)
Close (Esc)

That's not exactly what I'm looking for. But it works.
Thank you!