Hi

I think the stand alone latest version of Mercalli Pro alows batch stabilising but not the Mercalli Pro plugin for MEP or VPX.

I presume you have captured the super 8 as reasonably long takes (reels) so you would have to first stabilise the file for each reel in the timeline and export then reimport and edit, as the stabilising is lost once you cut it.

It is however better to stabilse each take after cutting because some will be more unsteady than others due to shooting variables, like zoom factor, etc. and a blanket stabilisation will mean some will be enlarged more than necessary with the subsequent lost of clarity.

Ss