Sensoray 2480 - Manual (Page 7)

2480 Instruction Manual 5 Runtime Control
Runtime Control
4.1 Overview
Runtime operation can be controlled through the 2480’s
web-based interface or its telnet interface, or both. This chapter
discusses runtime control as it applies to both interfaces.
Unless otherwise noted, descriptions apply to both interfaces.
4.2 Stream Viewing
The stream from each video input channel is accessible
through a URL that has this general form:
protocol://address:port/
The protocol , which may be either http or rtsp as
explained in Section 3.6.4, is followed by the 2480’s IP
address . The port number designates the video input
channel as follows:
port = channel + 10000
For example, the stream from video input channel 3 might be
viewed in VLC or Quicktime through a URL similar to this:
rtsp://10.135.24.80:10003/
4.2.1 Video Adjustments
Various adjustments can be made to the video decoder on the
fly. These adjustments do not interrupt streaming, but the
resulting visual changes will be reflected in the stream. These
video attributes can be adjusted:
4.3 OSD Caption Overlays
User-defined text may be overlaid onto the video frames of any
video input channel, thus enabling on-screen display (OSD) of
the text. One line of text, consisting of up to 80 characters,
may be displayed at either the top or bottom of video frames.
The OSD text content, display location, and background color
are individually programmable for each channel.
4.3.1 Caption Strings
OSD text content is determined by a user-defined caption
string. OSD is enabled by default but can be disabled using
web or telnet interface. Caption strings are persistent; once a
caption string is defined, it will be displayed on subsequent
video frames until it is changed.
Caption strings may contain any printable characters except the
up arrow (“^”), which denotes the beginning of a special
character sequence. The special two-character sequence “^t”
inserts the current system time, and “^d” inserts the current
system date. The format of the date and time strings can be
modified using the web or telnet interface.
For example, this caption string will result in a display that
contains both constant text and dynamic date and time stamps:
Reactor Core - ^d ^t
The resulting OSD will look similar to this:
Reactor Core - 11/14/2015 23:11:42
The OSD line length, including displayed time and date
stamps, must not exceed 80 characters.
Caption strings cannot be manually updated at frame rates, and
it is not possible to synchronize manual updates with particular
video frames. However, automatically generated date and time
stamps are updated at video frame rates.
4.3.2 Text and Background Colors
OSD captions are always displayed as white text. The text
background may be configured to be either solid or
transparent. When solid mode is selected, a solid black
background appears behind the white text, whereas the
transparent mode uses live video as the text background.
The solid background optimizes text contrast, but it obscures
video that would be visible in the transparent mode.
4.4 Video Output Switching
The 2480 features a 16x4 analog video crosspoint switch that is
capable of routing any combination of four input channels to
external video monitors. Each video output channel may be
connected, through the crosspoint switch, to any of the 16
video input channels.
When configuring an output channel, any video input channel
may be selected as the video source or, in lieu of selecting an
input channel, the output driver may be disabled by turning it
off.
Attribute
Value
Range Default
Brightness 0 to 255 (dark to light) 128
Contrast 0 to 255 (min to max) 128
Saturation 0 to 255 (no color to max color) 128
Hue -128 to 127 (irrelevant in PAL mode) 0