The buffer represents how much video you’ve downloaded and are able to play before downloading another chunk. It is normal for this value to fluctuate between 4-12 seconds. An abnormally high value (over 16 seconds) means your internet is flaky and we’re making the stream “less live” to avoid stuttering. An extremely low value (under 4 seconds) means your internet is too slow to download the stream chunks before we finish playing the prior chunk, and means you should decrease the quality option (if available) or ask the streamer to reduce their bitrate.