Audio Capture Errors
Diagnose and fix issues with audio capture during your meetings. This guide covers the most common causes and their solutions on both macOS and Windows.
Common Symptoms
Audio capture problems in HintMint typically surface in one of three ways. Identifying which symptom you are experiencing will help you narrow down the fix faster.
- No audio detected -- HintMint shows a meeting in progress but the transcription area remains empty and the audio level meter does not move.
- Partial audio -- Only one side of the conversation is transcribed (e.g., you can see your own speech but not other participants, or vice versa).
- Distorted or garbled capture -- Transcription output contains repeated nonsense words, heavy stuttering, or the audio waveform appears clipped.
Likely Causes
Wrong audio input selected
HintMint captures system audio by default, but if your operating system or meeting app has routed audio to a different output device (for example, a Bluetooth headset that was connected after HintMint launched), the app may be listening on the wrong stream.
Microphone permissions denied
On macOS, HintMint requires both Microphone and Screen Recording permissions to capture meeting audio. On Windows, microphone access must be granted in the Privacy settings. If either permission is missing, audio capture will silently fail.
Conflicting audio applications
Other apps that create virtual audio devices or intercept system audio -- such as screen recorders, audio routing utilities, or podcast software -- can compete with HintMint for access to the audio stream, causing partial or distorted capture.
Fixes for macOS
Check System Preferences permissions
Open System Settings > Privacy & Security > Microphone and confirm that HintMint is listed and toggled on. Then do the same under Screen Recording. If HintMint is not listed, drag it into the list or reinstall the app to trigger the permission prompt again.
Verify the audio output device
Click the Sound icon in the menu bar (or go to System Settings > Sound > Output) and confirm the device your meeting app is using matches the device HintMint expects. If you recently connected a Bluetooth device, restart HintMint so it picks up the new routing.
Close conflicting audio software
Quit any apps that install virtual audio drivers -- Loopback, BlackHole, Soundflower, OBS Virtual Cable, or similar. After quitting them, restart HintMint and try capturing audio again.
Restart the Core Audio service
If audio capture is still broken, open Terminal and run: sudo killall coreaudiod. macOS will automatically restart the audio daemon. Then relaunch HintMint and your meeting app.
Fixes for Windows
Grant microphone access
Open Settings > Privacy & Security > Microphone. Make sure 'Microphone access' is turned on at the top and that HintMint is listed with access enabled. If it does not appear, toggle the global setting off and back on, then relaunch HintMint.
Set the correct default playback device
Right-click the speaker icon in the system tray and choose 'Sound settings'. Under Output, confirm the device your meeting app uses is set as the default. If you are using headphones or an external speaker, make sure that device is selected.
Disable exclusive mode on the audio device
Open Sound settings > More sound settings. In the Playback tab, double-click your output device, go to the Advanced tab, and uncheck 'Allow applications to take exclusive control of this device'. Click Apply. This prevents a single app from locking out HintMint.
Update or reinstall audio drivers
Open Device Manager > Sound, video and game controllers. Right-click your audio device and choose 'Update driver'. If the problem persists, choose 'Uninstall device', restart your computer, and let Windows reinstall the default driver automatically.
Still Having Issues?
If none of the steps above resolve the problem, the issue may be specific to your audio hardware or meeting platform configuration.
- Try a different meeting platform (e.g., switch from Zoom to Google Meet) to determine if the issue is platform-specific.
- Test with a different audio output device (e.g., built-in speakers instead of Bluetooth headphones).
- Check for pending operating system updates that may include audio driver fixes.
- Contact HintMint support at support@hintmint.com with your OS version, meeting platform, and a description of the symptom.