Quoted from my side of a conversation with an acquaintance, paraphrased to remove unrelated bits:
“Back at university in OS class, I was given a paper to read about WAFL: the Write Anywhere File Layout. I bet a metadata attachment standard named, uh, the Interoperable Container for Embedding Contributed, Readable, Exogenously Applied Metadata would be a good layer on top of that for a media server. →
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