> So I guess you are telling me that I am not able to run OBS studio. OBS Studio has libfdk-aac0, which is a proprietary package, as a required dependency. However, the only purpose of this package is to support the AAC audio format. There are other, freer formats than AAC such as Vorbis and Opus, so if OBS Studio supports such formats then it's likely that OBS Studio could still be useable without AAC support.
To try this, we'll need to download and modify the .deb package so that it no longer tries to install libfdk-aac0, and then install from that .deb file with dpkg instead of apt. This will require us to install dependencies manually, so first run $ apt-depends obs-studio This will print all dependencies of obs-studio. Install all of them except for libfdk-aac0. Then, run $ apt download obs-studio $ tar x obs-studio*.deb $ tar -xzf control.tar.gz $ sed -e s/"libfdk-aac0 (>= 0.1.1), "//g -i control $ tar -cvzf control.tar.gz control $ ar rcs newpackage.deb debian-binary control.tar.gz data.tar.xz $ sudo dpkg -i newpackage.deb If it installs without any errors, run it and see if it works. If so, it might be worth contacting the developers and asking them to make libfdk-aac0 a "suggested" dependency instead of a "required" one. That would make it easier to install obs-studio while avoiding libfdk-aac0.
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