Overlay only by hands.
Just put your footage on timeline.
Then create title with date and add generated timecode effect with copied metadata on it.
Crop seconds and miliseconds and if you want nest with your footage.
As I think You do not need renaming your footages - You need just get time and date as text list from which you will copy data to the title and timecode effect.
Therefore use this script (just drag'n'drop folder to this bat)
exiftool -ext MTS -r -T -FileName -dateTimeOriginal -d "%%d-%%m-%%Y %%H:%%M:%%S:00" %* > E:\Your_Path\out.txt