Don’t know why, but with all the last updates in manjaro, OBS Studio broke, at least the obs-studio-tytan652 which i use cause is the only with vlc video sources (not the community nor the flatpak).
So, i’ve contacted the support and managed to solve it after hours of analyzing the problem, which i’ll put as an answer, hope it helps someone else with the same problem and the Manjaro team to see why it happened so they might avoid it next time? Thanks.