Unable to export movie from Matinee in Linux

Unable to export movie from Matinee no matter what!

I opened a “First Person” template, added a Matinee Actor, added Camera Group, added Director Group with respective keyframes.

Added a blueprint so that the level begins with play.
Movie Captures starts correctly, movie plays correctly but nothing is saved, except a “Manifest.json” file.
Tried different formats and save locations, still No Luck!

Replicated the whole thing in a Windoze machine, everything run as expected.

Any advices, will be more than welcomed!