How to Make NeatVideo Work on Natron Flatpak

Problem

NeatVideo does not work out of the box on Natron when used via Flatpak, this because the directory in which it gets installed cannot be seen by default.

Tried asking on the NeatVideo forum, but did not receive particularly useful help, also I never contuinued the conversation, anyway a solution has been found!

Partial solution

To solve this, we can install a utility (can also be done manually) called Flatseal

and give Natron permissions to read “All system libraries, executables and static data” Then, add the path on the

Edit > Preferences > Plug-ins > OpenFX plug-ins search path

to the directory, which should be by default

/usr/local/Neat Video v5 OFX

but that I have custom installed as

/usr/local/neat-video-v5-ofx (suggested, spaces are evil)

Now it should work, but it does not because you’ll soon find out that the directory cannot be seen, as flatpak has for some reason not direct access to it.