ELRO FA420DVR 4-ch digital recorder + 500 gb hard disc USERS MANUAL - Manual (Page 42)

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Figure 4.13 Daylight Saving Time Settings (by Week)
Figure 4.14 Daylight Saving Time Settings (by Date)
4.4.2 Encoding Settings
Set video/audio encoding parameters, including image parameters for video files and remote
monitoring. Set encoding settings of each independent channel in the left section and parameters for
sub-coding stream in the right side section. Dual stream uses one high bit-rate stream for local HD
storage to support D1/HD1/CIF/QCIF codes and another low bit-rate stream (QCIF code) for network
transmission, while taking care of local storage and remote network transmission in the meantime. While
the network bandwidth is limited, dual stream covers both image quality and transmission quality,
practically breaking through the network bottleneck. It flexibly picks stream format in accordance
with the available network bandwidth to achieve high definition storage and transmits back-end
low stream through network.
Note: Main applications of substream: to perform multi-channel live monitoring and mobile phone
monitoring when the network connection is limited.