Stream Switch; Picture Search - Dahua NVR52-EI Series User Manual

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of emergency.

digital channel become dimmed.

5.6.3.6 Stream Switch

to switch the bit stream type of the main stream and sub stream according to current

network bandwidth.

● M: Main stream: Its bit streams are big and definition is high. It occupies large network bandwidth

suitable for video wall surveillance, storage and more.

● S: Sub stream: Its definition is low but occupies small network bandwidth. It is suitable for general

surveillance, remote connection and more. Some models support two sub streams (S1, S2).

Background Information

Select the image of target person on the live view page and then search by image for all the related

videos with the target person.

Draw a search range according to the on-screen prompt, and then click OK.

to start two-way talk. The icon changes to

again to cancel two-way talk.

. The live image is frozen.

. The rest two-way talk buttons of

User's Manual