cognitive psychology. PhD 
open-source projects as repositories of domain knowledgepic.twitter.com/V76EST2Iry
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ffmpeg and ImageMagick embody deep knowledge about how to interpret media files found in the wildpic.twitter.com/bagV1oa0Mb
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When I interned at Snapchat, they hired one of the ffmpeg devs just to solve all their video problems. Insane how much complexity in video codecs and containers. Time bases, variable frame rates, fractional frame rates (29.97???), and that's when your video _isn't_ corrupted.
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Sucks though if your use case differs from theirs, e.g. we wanted to do analytics that required non-sequential access to frames. Asked the dev, his response: "oh, ffmpeg wasn't built for that, don't use it." Great, so now I need to reimplement an mp4/h264 decoder by hand?
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Very different in that sense from SQLite. It's way easier to transition from SQLite to Postgres to BigQuery since they have a consistent interface, i.e. SQL. Even if "ffmpeg for analytics" existed, there is no standardized interface for video.
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