Thanks, that is the clearest explanation I have seen to date of how Netflix dynamically adjusts video compression to adapt to internet congestion.
We are currently watching the Netflix series called, I think, House of Guinness. This appears as almost monochrome, mostly near black, like the eponymous drink, and the sound quality is so bad, we have to have the English subtitles turned on.
A problem I have with most streaming services is that they each need their own "app" and their entire ecosystems are pretty much black boxes. The black box may, or may not, implement compression when network conditions dictate. Usually, we just don't get told.
I'd just add that TCP requires every client to send a message back to the server for every packet they have successfully received. Not an efficient use of the Internet nor server resources and the planet is suffering as a result

