User Manual

Verizon Base Unit User Guide Rev B PRELIMINARY 3/20/2014 Tech-X Flex
®
(P5)
5-46
Intro
Wi-Fi
10/100
System
IP/Video
Specs
channel guide also provides a series of other default testing parameters for each channel, such codec
type and media stream information.
NOTE: The channel guide concept does not apply to unicast video. With unicast, the destination IP
address for video packets will be that of the endpoint device (such as an STB), rather than a
predictable multicast address. Therefore, it is not possible to standardize unicast IP information
within a channel guide.
Channel guides are in XML format and must adhere exactly to the format in the following sample (except
for the <!-- comments -->), with regard to tag names, case-sensitivity, and element hierarchy:
<video-channel-info>
<!-- Each channel is defined by a single <channel-info> element -->
<channel-info>
<!-- Channel number, an integer -->
<channel-number>001</channel-number>
<!-- Channel abbreviation, a string -->
<channel-abbreviation>ESPN</channel-abbreviation>
<!-- IP address of the channel stream in xxx.xxx.xxx.xxx format -->
<IP-address>239.255.1.101</IP-address>
<!-- UDP port of the stream, an integer -->
<IP-port>3002</IP-port>
<!-- Encapsulation type, UDP or RTP -->
<encapsulation>UDP</encapsulation>
<!-- Codec, H264, MPEG2, MPEG4, or NA -->
<codec>MPEG2</codec>
<!-- Jitter buffer mode, FIXED or ADAPTIVE
-->
<jitter-mode>FIXED</jitter-mode>
<!-- GOP type, GOP_A, GOP_B, GOP_C, GOP_D, or GOP_E -->
<gop-type>GOP_C</gop-type>
<!-- GOP length, 1 - 100 -->
<gop-length>15</gop-length>
<!-- Loss sensitivity, -50 - 50 -->
<loss-sensitivity>0</loss-sensitivity>
<!-- Concealment level, 0 - 50 -->
<packet-loss-concealment-level>2</packet-loss-concealment-level>
<!-- Complexity (content coding factor), -50 - 50 -->
<image-complexity>0</image-complexity>
</channel-info>
<!-- ...additional <channel-info> elements, one for each channel -->
</video-channel-info>