My educated guess: you’re using Julia v1.10 or older. And the package manager for some reason decided to favour an incredibly old version of FFMPEG.jl which required the super old package BinaryProvider.jl (when resolving an environment there are often several possible solutions and one has to be picked based on some heuristics, but these heuristics aren’t infallibile). One workaround is to add FFMPEG@0.4 to your environment. Another option is to use Julia v1.11, which doesn’t allow installing BinaryProvider at all.
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