Use this check to inspect a browser, device, network, permission, media, or input capability directly in the current runtime before relying on it in another workflow.

Codec probe

Codec support probe from the surface.

Summarize codec probe results into playback readiness with coverage and gaps. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Verdict

Overall playback readiness classification.

Supported codecs

Supported codec names in input order.

Unsupported codecs

Unsupported codec names in input order.

Coverage (%)

Share of probed codecs that are supported.

Issues

Stable machine-facing notice codes.

• Results describe the current browser session and can change with permissions, privacy controls, hardware, drivers, network path, power state, or browser updates. Unsupported or withheld information is not proof that the underlying capability is absent.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Repeat the check in the browser and device that will actually be used, then confirm important behavior with the relevant operating-system or network diagnostics. Avoid granting permissions that are unnecessary for the test.

• Audio Output Tester

  Diagnose audio playback from an output probe covering rate, channels, latency, and underruns.

• Battery Checker

  Assess a battery probe, reporting charge state, estimated runtimes, and low-charge warnings.

• Browser Info Checker

  Parse a user-agent probe into browser family, engine, operating system, and device type.