QVidium QVMP2C-1011 - Manual (Page 15)

User’s Manual v.28 QVidium™ MPEG2+4 Codec
15 of 45 - Copyright 2007-2008 QVidium™ Technologies, Inc.
On the Network tab, shown in Figure 2b, enter a UDP port on which to receive IP video
packets. Enter a multicast address when receiving multicast packets, otherwise, leave this
field blank. Also enter the desired video format and video encoding type, to suit your needs.
You may also adjust the size of the network de-jitter buffer delay, if desired. The Max Stream
Bitrate field can be left blank if you do not know the maximum bit rate of the incoming stream.
However, entering a value here will help the decoder optimize the receive buffer and thereby
minimize the delay introduced at the decoder.
The next 3 decoder profile panels configure optional features. If you do not need these
features, you should leave them disabled or in their default state. The ARQ tab, shown in
Figure 2c above, configures the parameters for Automatic Retransmission Request (ARQ)
Error Correction. These parameters are explained in Appendix B. The last two panels, shown
in Appendix B, configure features that can control a remote QVidium encoder or QVidium
video server. For more details on these features, please consult Appendix B. In general, these
features should be disabled if not used.
5. Press the Save button to save your changes. If you don’t click Save, then your changes will be
ignored.
3.2 Starting the Decoder
Enter http://IPAddress where IPAddress is the IP address of the decoder.
1. Select
the Decoder menu on the left side of the web page.
2. Click on the Start button.
Note: While the decoder is running, you can adjust the volume of the output audio signal by using
the Volume panel from the Web interface. The default value is zero (0), and the range is ±27.
Clicking on the save button will save this setting for the next time you start the decoder.
3.3 Stopping and Reconfiguring the Decoder
Enter http://IPAddress where IPAddress is the IP address of the decoder.
1. If
the Decoder menu is not shown, select Decoder on the left side of the web page.
2. Select the Stop menu option underneath the Decoder menu. You should see the following
message at the top of the web page main area.
Decoder is Stopped.
3.4 Configuring Packet Transport & Error Correction
Section 3.4 describes the ProMPEG and ARQ error correction mechanisms of the QVidium
MPEG2+4 Codec. This section explains how to configure the video transport capabilities of the
QVidium MPEG2+4 Codec and how to configure the decoder of the Codec for proper operation of
these error correction mechanisms.
3.4.1 Configuring the Decoder’s Network Transport
Within the Network Parameters section of the decoder profile, select among ProMPEG, ARQ,
RTP, or UDP packet transport. Also, specify the UDP port number. The Multicast Address
specifies the IP multicast address, if any, to listen to for the Video/IP stream. If expecting a unicast