qpSum/framesDecoded

inbound-rtpinboundvideo

The average of the QP values per frame by this receiver.

Description

Real number

MUST NOT exist for audio (this is video only).

The average of the QP values per frame decoded by this receiver.

The definition of QP value depends on the codec; for VP8, the QP value is the value carried in the frame header as the syntax element y_ac_qi, and defined in RFC6386 section 19.2. Its range is 0..127.

Note that the QP value is only an indication of quantizer values used; many formats have ways to vary the quantizer value within the frame.

See also

Notes

  • Unless you are tuning an encoder and doing A/B tests about that it is not of much use to you