Snapshot - Dahua NVR21-4KS3 Series User Manual

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Configure audio compression parameters.

Sampling Frequency

Speaker Volume

Click Apply.

5.7.6.2 Snapshot

You can set snapshot mode, image size, quality and interval.

Select Main Menu > CAMERA > Encode > Snapshot.

Figure 5-72 More settings

Table 5-21 Audio compression parameters

This function is enabled by default for main stream. You need to manually

enable it for sub stream. Once this function is enabled, the recorded

video file is composite audio and video stream.

Select an audio compression format.

Set how many times per second a sound is sampled. The bigger the value,

the more natural the sound.

Adjust the volume of the camera.

Only the camera supporting the audio output have the function.

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