Main stream refers to the primary stream that aects data recorded to the hard disk drive
and will directly determine your video quality and image size. Comparing with the sub-
stream, the main stream provides a higher quality video with higher resoluon and frame
rate.
Sub-Stream
Sub-stream is a second codec that runs alongside the mainstream. It allows you to reduce the
outgoing internet bandwidth without
sacricing your direct recording quality. Sub-stream is
oen exclusively used by smartphone applicaons to view live video. Users with limited
internet speeds may benet most from this seng.
Frame Rate
Frame rate refers to how many frames are captured each second. A higher frame rate is
advantageous when there is movement in the video stream, as it maintains image quality
throughout.
Resoluon
Image resoluon is a measure of how much detail a digital image can hold: the greater the
resoluon, the greater the level of detail. Resoluon can be specied as the number of pixel-
columns (width) by the number of pixel-rows (height), for example, 1024 × 768.
Bitrate
The bit rate (in Kbit/s or Mbit/s) is oen referred to as speed, but actually denes the number
of
bits/me unit and not distance/me unit.
Enable H.264+/Enable H.265+
The H.264+/H.265+ mode helps to ensure the high video quality with a lowered bitrate. It can
eecvely reduce the need of bandwidth and HDD storage space.
Audio Source
The audio input signal source. If you select Audio Source as Camera, it will transmit audio via
coaxial cable, and make the local audio input signal unavailable. Ensure the camera supports
to transmit audio via coaxial cable before
selecng Audio Source as Camera.
Note
Audio Source is only available for certain models.
Enable Low Bitrate Mode
In order to save device bandwidth or memory, the device would automacally adjust camera
video main stream bitrate according to your network condion.
Note
Low bitrate mode is only available for certain camera models. If your camera supports this
funcon, it would be enabled by default.
3.
Click Apply.
Digital Video Recorder User Manual
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