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AV1 playback in LibreELEC on a Pi 4
(lemmy.ml)
Community about the single-board computers, micro-controllers and related projects.
Other RaspberryPi communities on Lemmy
If it needs that library to work, then yes, compiling it and installing it is all it takes. Also, make sure it's installed in the right place. If it isn't, symlink it to where LibreELEC wants it to be.
Make a package of the library after compiling it... or if you can't make one, make a snapshot of the OS before installing it, so you can bring everything back the way it was in case something goes wrong.