I've done a bunch of playing with ffmpeg at home, and I imagine the tech stack is probably similar at Netflix, at least for the Source-->Chunk, Chunk-->Assemble

I've done a bunch of playing with ffmpeg at home, and I imagine the tech stack is probably similar at Netflix, at least for the Source-->Chunk, Chunk-->Assemble, and Assembled-->Encode steps. The validation done during all of these is interesting. Netflix's early years are probably exactly like what you're doing - single file in, transcode, single file out and deploy. Chunking the pieces up is clever. Getting it right must have been challenging. How do you write an oracle for something that complex?