This plays a generated test source — a flashing picture with a short beep once a second — through the same streaming path as a real movie, and measures timing instead of assuming it is fine.
| Startup time (first picture) | — |
|---|---|
| Frames shown | — |
| Frame rate (measured) | — |
| Frame interval jitter (std. dev.) | — |
| A/V offset (audio clock − video time, mean) | — |
| A/V offset spread (std. dev.) | — |
| Drift (audio clock vs. wall clock) | — |
| Audio underruns | — |
| Rebuffers | — |
| Stream length | — |