Having never heard of it, I googled iina.
“For and only for modern macOS.”
Pft yeah no. I don’t need that brand of elitist nonsense, thank you.
VLC works equally well across multiple platforms and is compatible with pretty much everything. I’ve been running it for over a decade and have never had any issue with it, and that is what I’ll continue to use. I certainly won’t trade it for some smug app that has to make a point of advertising it only works on one and only one flavor of OS like that’s something to brag about or feel pride over.