OBS Audio Recording Issue on macOS

[Bn5]

Dear friends,

I have been having an audio problem when recording with OBS on macOS, and I’m hoping someone can help.

Here is the situation:

• When I start a recording, the audio is fine.
• However, after some time—sometimes 30 minutes, sometimes an hour or even longer—the recorded computer audio first becomes intermittent and then eventually disappears completely.
• During the entire recording, I can still hear the computer audio clearly through my earphones.
• If I use a microphone, the microphone audio continues to be recorded normally.
• The problem only affects the audio coming from the computer’s output/system audio.

I have used OBS before without this problem. I have also set up BlackHole 2ch as a virtual audio output.

It is very frustrating because everything works normally at the beginning, but the computer audio eventually stops being recorded while I can still hear it through my earphones.

Has anyone experienced this issue or have any suggestions on how I can troubleshoot or fix it?

Thanks and regards,
Ben