CMCD Inspector
Enable Common Media Client Data (CTA-5004) on the player and watch the CMCD keys — buffer length, throughput, object type, bitrate — attached to every segment request, decoded live.
What is CMCD?
Common Media Client Data (CTA-5004) lets the player report telemetry — buffer length, measured throughput, object type, bitrate — to the CDN on every manifest and segment request. Here it's appended as a
CMCD= query parameter. Press play and watch the table populate as segments load.