How You Usually Record Audio?

Hi everyone.

I'm doing a little research and would like to know how usually you would expect the audio to be recorded in a VMS when the camera is set to be recorded by MOTION DETECTION.

Would you expect that the audio track is continuously recorded regardless of motion detection, but the video track is only recorded on motion, which means there will be many parts in the video that will have only audio (because of no motion)?

Would you expect that audio track is recorded only when motion is detected in the video track, which means audio and video are always "synced" as gaps without video motion will also not have audio?

Please consider only MOTION DETECTION and not recording by event.

Thanks!

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