If you have enabled an audio source (for example, a microphone) on a hardware device, audio recordings are archived together with video recordings from the camera attached to the hardware device. If the hardware device is a video encoder with several channels, audio is archived with the camera on channel 1. When you have enabled an audio source, the system records audio to the associated camera’s database. This affects the database’s capacity for storing video. You may, therefore, want to use scheduled archiving more frequently if you record audio and video than if you only record video.
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