Kdenlive for Windows: Installer vs Portable

Hi all

2 options are available, when wanting to use Kdenlive on Windows:
Installer, and Portable (Standalone, self-extracting .exe)

My question:
What additional things are done when choosing the installer,
vs the Portable version?

For example:
Are there File Extensions that are Registered by Kdenlive?
Are there other things tha are done in addition to File Extensions?

Your answer will help me choose which one to always use.

Thank you