TCH group BC840-MC series, User Manual

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11.3.1 Encoder Settings
Item Description
Enable All encoders are enabled by default. Use this check box to disable/re-
enable this specific encoder.
Encoding mode H.264 or
MJPEG The method used to compress the video signal.
The BC840-MC can stream (M)JPEG over UDP and HTTP.
● To enable and configure UDP/MJPEG streaming, select MJPEG from
the Encoding mode list and configure settings.
● To transport JPEG over HTTP and/or use the Live View previews in
the webpages, go to the Live View tab, enable the Live View
encoder, and configure its settings.
Video bit rate
mode Controls variations in bit rates.
Constant
quality Keeps the image quality constant, with varying
network load. See Constant Quality Mode (CQM)
configuration (below) for TKH Security's
recommended strategy for controlling image quality.
Constant bit
rate Keeps network load constant at the cost of varying
image quality. Frames may be skipped.
Resolution Indicates the number of pixels that can be displayed in each
dimension (width x height).
HD1080 1080p (1920x1080)
1440x1080 1080p (1440x1080)
HD720 720p (1280x720)
960H 960x576 (PAL); 960x480 (NTSC)
D1 720x576 (PAL); 720x480 (NTSC)
VGA 640x480
2CIF 720x288 (PAL); 720x240 (NTSC)
CIF 352x288 (PAL); 352x240 (NTSC)
With Encoder 1 and Encoder 2 both doing H.264 encoding or both
doing MJPEG encoding, the BC840 will simultaneously handle single
full HD encoding up to 30 fps and single CIF encoding up to 30 fps.
Dual full HD H.264 encoding or dual full HD MJPEG encoding is
supported up to 15 fps. For a combination of H.264 encoding and
MJPEG encoding there are no limits. The maximum resolution for Live
View encoding is D1
GOP length Distance in frames between two I-frames.
Frame rate PAL: 1-25 fps; NTSC: 1-30 fps. Selectable rates are determined by
the video mode (PAL, NTSC) set on the Image tab.
Bit rate Constant bit
rate mode only The speed of the digital transmission - that is, the
amount of information transferred/processed per
unit of time.
Actual bit rate Constant
quality mode
only This field is dynamically updated with the current bit
rate to provide feedback on the bit rate that is used
on average with the current Quality setting.
Video
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