Hey akeemdowns, I took a look at your OBS log file... the issue is pretty clear.
OBS shows the following warning:
DShow: Could not set audio format
Datadisk: Audio configuration failed, ignoring audio
And also:
[WASAPISource::TryInitialize]:[Line In (Realtek(R) Audio)] Failed to initialize audio client: 80070005
WASAPI: Device '{...}' failed to start (source: SoundSystem)
What does this mean?
The “Line In (Realtek Audio)” device can’t be initialized.
Error code 80070005 translates to "Access Denied".
→ Possible causes:
OBS doesn't have permission to access the microphone
Another process is blocking the device
Windows privacy settings are preventing access
Your capture device (MiraBox Video Capture) doesn’t deliver audio to OBS.
OBS couldn’t set an audio format and therefore disabled audio capture from that device.
How to fix it:
Run OBS as Administrator
– Right-click on the shortcut → "Run as Administrator"
Check Windows privacy settings
– Settings → Privacy & Security → Microphone
– Make sure OBS is allowed to access the microphone
Double-check your capture device
– Some USB capture cards transmit video only
– If audio is expected, you may need to connect an additional cable (e.g., 3.5mm audio)
– Or use a separate audio input in OBS
Reconfigure the audio input in OBS
– Add a new audio input source → e.g., "Microphone (Realtek Audio)"
– Make sure the device is enabled in Windows sound settings
Check monitoring and audio tracks
– In OBS settings under “Audio” → confirm the correct tracks are active
– Enable monitoring if needed
What ever... it's a mix of permission issues and incorrect audio setup. Once OBS has proper access and the input device is configured correctly, the audio should work as expected.
Let me know your exact setup (mic model, capture card, cables, etc.) and I’ll gladly help you set it up right.
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