This page sends viewer-side throughput/buffer telemetry to AIOJunction over WebSocket. The full video still downloads directly from the provider. Browser playback is only a diagnostic aid: some MKV/HEVC sources that work in native Stremio will not play in an HTML5 video element. Throttle this viewer externally; sustained low delivery or a stall will make the cloud choose a lower candidate and reopen at the same timestamp. Browser downlink is display-only; initial ranking is not based on navigator.connection.
Mbps measurement: effective delivery is estimated from growth of the browser's buffered media timeline × the selected source bitrate. WebSocket carries those measurements to the dashboard; it does not relay media bytes.