[rs186]

Still doesn't make any sense.

The company that I work at makes sure anything that uses third-party library, whether in internal tools/shipped product/hosted product, goes through legal review. And you'd better comply with whatever the legal team asks you to do. Unless you and everyone around you are as dumb as a potato, you are not going to do things that blatantly violates licenses, like shipping a binary with modified but undisclosed GPL source code. And you can be sure that (1) it's hard to use anything GPL or LGPL in the first place (2) even if you are allowed to, someone will tell you to be extra careful and exactly do what you are told to (or not to)

And as long as Amazon is complying with ffmpeg's LGPL license, ffmpeg can't just stop licensing existing code via an email. Of course, unless there is some secret deal, but again, in that case, someone in the giant corporation will make sure you follow what's in the contract.

Basically, at company at Amazon where there are functional legal teams, the chance of someone "screwing up" is very small.