User`s manual

Configure DR3 DVR
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PIP item is for 2 channels video inputs at the same time, the 2 channels videos will be
recorded in one video file at the same time.
PIP mode supports nine different position beforehand, please consult the
Picture-In-Picture (PIP) chapter for more details.
PIP-2 item is for 3 channel video inputs at the same time, the 3 channel videos will be
recorded in one video file at the same time.