WebRTC webcam test and live preview

A WebRTC webcam test with a live video preview does not, by itself, confirm that your webcam microphone is capturing speech. For an audio check, the test must also request microphone access and provide a way to inspect the captured sound. The supplied information does not establish whether a particular test offers microphone selection, an audio indicator or recording playback.

Check which microphone the test uses

The camera and microphone are separate inputs. Seeing your webcam’s picture does not establish that its built-in microphone is selected; audio could come from a laptop, headset or another connected device.

If the test provides an audio input selector, choose the entry corresponding to the webcam microphone. Allow microphone access when prompted. If the device names are ambiguous, the supplied information is insufficient to identify the correct entry; check the device information available in your operating system or webcam documentation.

Check speech capture separately from the live picture

If an audio activity indicator is available, speak and watch for a response. Movement can indicate incoming audio, but it cannot establish whether your words are intelligible or whether background noise is distracting.

If recording and playback are available, record a short spoken sentence from your intended speaking position. Listen for understandable words, missing syllables, distortion and background noise. These are useful listening checks, but no recordings or measurements were supplied from which to judge this webcam’s voice quality.

What to do if the picture works but audio does not

• Confirm that the webcam model includes a microphone; the supplied information does not identify a model or its features.
• Check that microphone access is allowed for the test in the browser and operating system.
• Check the selected audio input and any microphone mute or input-level controls.
• If the page provides only a video preview, use a microphone test or recording function to check speech capture.

Verify audio in your conferencing app

A successful browser test does not establish that your conferencing app has selected the same microphone. Select the intended input in that app and use its audio check, if available. No browser, operating system or conferencing app was specified, so compatibility and exact settings cannot be confirmed from the supplied information.