i installed it from flatpak
Containers like flatpak, snap, and whatever else you might use, are designed to put walls around things for security. That's on purpose. It also makes it hard to use things that need full access to a bunch of system resources, like camera, mic, etc. It can be done, but it makes you jump through a bunch of hoops to fix enough permissions that it's not really sandboxed at all anymore. So you've really just given yourself a headache for the fun of it and nothing more.
Try installing native instead.
For Debian and derivatives (Ubuntu, Mint, Raspberry Pi, etc.), install the PPA first (
sudo apt-add-repository ppa:obsproject/obs-studio
), and then
sudo apt update
and
sudo apt install obs-studio
For everything else, see what options you have.
OBS (Open Broadcaster Software) is free and open source software for video recording and live streaming. Stream to Twitch, YouTube and many other providers or record your own videos with high quality H264 / AAC encoding.
obsproject.com
(and this is my analyze before i used the auto wizard thing
https://obsproject.com/logs/p6FhCM8uKueuZpdF)
OBS (Open Broadcaster Software) is free and open source software for video recording and live streaming. Stream to Twitch, YouTube and many other providers or record your own videos with high quality H264 / AAC encoding.
obsproject.com
Both logs are technically invalid, as shown in their respective analyzer links, except that both say you need a better computer. It might be made to work anyway, depending on what you're doing and how much you can pare things down, but that requires a fair amount of knowledge of what's going on under the hood.