Need help with a file rename

[mrp7]

Hello! I'm hoping to get some assistance with the following:

Example file names:

05m01 becomes 0005_001
23m34 becomes 0023_034
712m182 becomes 0712_182

The part before "m" needs to be translated to 4 digits padded with zeros, the part after "m" needs to be exactly 3 digits padded with zeros

m becomes a _ (that part I can do )

Thanks in advance for any assistance.

[KenP]

You can do this in 2 steps with regex.

1.
RegEx (1)
Match: (\d*)m(\d*)
Replace: 000\1_00\2

2.
RegEx (1)
Match: \d*(\d{4}_)\d*(\d{3})$
Replace: \1\2

[mrp7]

Thanks you, that works!