Yeah - Amazon Elastic Transcoder which they just shut down and replaced with Elemental MediaConvert is almost certainly just managed "ffmpeg as a Service" under the hood.
Twitch definitely. This whole brouhaha has been brewing for a while, and can be traced back to a spat between Theo and ffmpeg.
In the now deleted tweet Theo thrashed VLC codecs to which ffmpeg replied basically "send patches, but you wouldn't be able to". The reply to which was
You clearly have no idea how much of my history was in ffmpeg. I built a ton of early twitch infra on top of yall.
--- end quote ---
This culminated in Theo offering a 20k bounty to ffmpeg if they remove the people running ffmpeg twitter account. Which prompted a lot of heated discussion.
So when Google Project Zero posted their bug... ffmpeg went understandably ballistic
