I am having the same kind of issue, say no decoder for png (even for mp4 it say the samething)
Its a fresh install of Linux Lite (Unbuntu 20.04 focal,updated) and ive use the ‘’ ~ichthyo/+archive/ubuntu/natron ppa’’ for instaling from Synaptic … so no snap install
heres the images of the problem and the installs components
I am kind of very happy and kind of benn putting on the side ways… explanation will follow—)
I keep reading about it for like 6 days… finding other alternative ways to install it… and at a certain point i was like… waht’s wrong… (as i have said, this before… theres is things i dont undrestand in linux and open source software)…
and you gave me the link to a BETA realease… first i was like… no way… not a un-finish version… but hey, waht the hek, i have to loose at this point…
it seem’s to work perfectly for now… (if problem, i will come back…loll)
I am telling you… i’m not very used to Linux, and all of it’s wierd way of fonctionning… so it will probably the last thing’s i would have tryed… (a beta version)
Just wanted to post somewhere that I finally found the answer to this! It appears to be a very strange incompatibility with the Keybase desktop app on Windows. When the app is running Natron will not be able to accept files dragged into the node graph or navigate to folders outside of the root directory. Quitting Keybase resolves the issue.