17
Compression/Video
Description
①
Video
Select one of the following options: Main Stream, Sub Stream
②
Video/Format
Select one of the following options:
H.264B: Baseline Profile. Uses up to 50% less bandwidth than MPEG4 and up to 80% less than
MJPEG.
H.264: Main Profile. Uses less bandwidth than Baseline Profile at the same quality.
H.264H: High Profile. Uses less bandwidth than Main Profile at the same quality.
MJPEG: Uses the most bandwidth but produces excellent image quality with access to every
image in the stream.
H.265
：
Uses less bandwidth than H.264H at the same quality.
③
Video/
Smart Codec
Turn ON smart codec to save bandwidth in codec optimization.
④
Video/
Resolution
Select a resolution. Recommended bit rates for each resolution appear as the
Reference Bit
Rate
.
⑤
Video/
Frame Rate
For NTSC cameras, select a frame rate between 1 and 60 frames per second. For PAL cameras,
select a frame rate between 1 and 50 frames per second.
⑥
Video/
Bit Rate Type
Select one of the following options:
CBR
(Constant bit rate)
:
Recommended for low bandwidth environments. Required if MJPEG
compression is used.
VBR
(Variable bit rate)
:
Bit rate changes according to the complexity of the scene. Select a
Quality
level between
1
(lowest) and
6
(highest).
⑦
Video/
Bit Rate
Select a bit rate from the list of options, using the
Reference Bit Rate
as a guide. In
VBR
mode,
bit rate refers to the maximum bit rate.
⑧
Video/
I-Frame Interval
If H.264 compression is selected, you can specify the number of P-frames between I-frames.
The recommended I-frame interval is two times the frame rate.
⑨
Video/SVC
Select a SVC step (1~3).
⑩
Video/
Watermark
Select the check box to add a digital watermark to the recorded video. The
Watermark Text
can
only contain letters, numbers, underscores (_), and hyphens (-), without any spaces.
ENG
3.4.2 Compression Setup / Video