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I check Level1 forum and I didn’t find anything for that capture card. https://forum.level1techs.com/t/any-way-to-set-up-the-avermedia-live-gamer-4k-gc573-in-linux/142548/17
Also check Manjaro’s Forum:
But no luck.
I check also this:
But I have no idea what is it.
I also check obs forums for that.