@brief End-to-end latency at the user experience level. The delay from the start of capturing at the sending end to the completion of rendering at the receiving end, in units of ms.
@brief User experience-level end-to-end delay, in milliseconds, from the time when the sender captures the encoding to the time when the receiver decodes the rendering
@brief The cumulative duration of the video card of the remote user accounts for the percentage (%) of the total effective duration of the video after entering the room. The effective duration of the video refers to the duration of the video other than stopping sending the video stream and disabling the video module after the remote user enters the room to publish the video stream.
@brief Whether the media stream belongs to the user is a screen stream. You can know whether the current statistics come from mainstream or screen stream.
@brief Statistical interval, the interval of this reference period, in ms.
This field is used to set the reference period for the callback, currently set to 2s.