The majority of video traffic on the internet is encrypted. But it doesn't need to be downscaled directly by the operator, since almost all streaming services w

The majority of video traffic on the internet is encrypted. But it doesn't need to be downscaled directly by the operator, since almost all streaming services will adapt the actual video quality to the observed bandwidth. All you need to do is detect video traffic (quite easy to do even if it's encrypted) and selectively throttle it. The servers will take care of the rest.