hugeFramesSent
Represents the total number of huge frames sent by this RTP stream.
Description
Non-negative integer
MUST NOT exist for audio (this is video only).
Represents the total number of huge frames sent by this RTP stream.
Huge frames, by definition, are frames that have an encoded size at least 2.5 times the average size of the frames.
The average size of the frames is defined as the target bitrate per second divided by the target FPS at the time the frame was encoded. These are usually complex to encode frames with a lot of changes in the picture. This can be used to estimate, e.g slide changes in the streamed presentation.
The multiplier of 2.5 is choosen from analyzing encoded frame sizes for a sample presentation using WebRTC standalone implementation. 2.5 is a reasonably large multiplier which still caused all slide change events to be identified as a huge frames. It, however, produced 1.4% of false positive slide change detections which is deemed reasonable.
See also
- outbound-rtp->framesSent
- outbound-rtp->framesEncoded
- WebRTC Statistics Specification
