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How to read bitrate, FPS, dropped frames, CPU and GPU

Bitrate and FPS show what went out; dropped frames show where something couldn't keep up; CPU and GPU help confirm pressure on the machine. Read the metrics over the same time window.

Published
Reading time
2 min read
Corneta version
0.11.0
Tested with
Corneta 0.6.0 (Windows 11), OBS Studio 32.x (Windows 11)

Read them together

MetricWhat it answersWhat it doesn't prove on its own
bitratehow much data goes out per secondperceived quality or future stability
FPShow many frames reach the outputwhether the game is running at the same FPS
dropped framespart of the flow couldn't keep upthe cause, without separating network, render and encoder
CPUoverall processing pressurewhich process is to blame
GPUoverall graphics card pressurewhether rendering or an encoder session ran short

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Quality screen showing estimated upload and detected encoders.

Before GO LIVE, the estimate shows the planned load; during the stream, the metrics show what happened.

Before GO LIVE, the estimate shows the planned load; during the stream, the metrics show what happened.Source: CornetaCorneta version: 0.11.0

A quick diagnosis

  1. Note the minute of the symptom.
  2. See whether the drop hit every destination.
  3. Open View → Stats in OBS.
  4. Compare network, rendering and encoding over the same window.
  5. Change one thing and repeat the same scene.

High CPU with a smooth stream isn't an error. GPU below 100% doesn't guarantee headroom to render a scene on time either. What matters is the change that comes with the symptom.

If it's still confusing

SymptomConfirmNext step
bitrate drops on all of themnetwork dropped framestest upload and cable
FPS drops with render skippedgame or scene uses the GPUcap FPS and simplify sources
output skipped goes upencoder fell behindlower FPS, resolution or transcodes
only one destination reconnectsstate of the other platformsreview that ingest

Export the report or the diagnostic, never credentials or raw logs.