User Manual v.1
QVidium
®
QVDEC4K™ UHD/HEVC Video Decoder
Copyright 2023 QVidium
®
Technologies, Inc.
Page 6 of 34
1.3 Reconfiguring and Resetting Network Settings
In case you are not able to connect to the QVDEC4K
™ through the network port(s) to a web
browser, we have provided 2 alternate mechanisms for resetting the IP addresses and network
settings: through
CodecManager
and through the
USB console serial port
. Any one of these 2
methods we describe in this section will allow you to recover in case the IP address was changed
or set to DHCP and you do not know its current value.
CodecManager:
As previously described in the last section, if you have a Windows PC or a Mac
running a PC emulator, you can download and run the QVidium application, CodecManager
™, to
change or set the IP address for the built-in Ethernet port. You can download CodecManager from
the Support page at
. If you have more than one network adapter on your
PC, you may need to select the proper Network Interface from the pull-down control in the lower
left corner of the CodecManager application. Also, because CodecManager relies on low-level
Ethernet-level multicasts, we recommend having both the QVDEC4K and your PC connected
through a switch, and not via a direct Ethernet cable. If you do not see the QVDEC4K on
CodecManager, even after clicking on the Discover button, then you should try connecting to the
other LAN port on the QVDEC4K. If you still do not see the QVDEC4K, then we suggest resetting
the network interface using the
USB Console Port
method.
USB Console Port:
To reset the network settings or the entire state of the QVDEC4K, you can
connect a USB cable to the Console USB port to log into the Linux shell. From the Linux command
shell, you can change the IP address or reset the entire device to its factory default settings. To
reset just the network settings to their factory defaults, connect a PC running a terminal emulator,
such we Hyperterm or TeraTerm. You should then see a new COM port on your PC after
connecting a USB cable to the USB command port on the QVDEC4K, even if the QVDEC4K is
powered off. Set the Baud rate to 1500000 and try connecting the terminal emulator to the new
USB port. The other serial port settings should be set to 8-N-1, no flow control. Upon power-on,
you should see a stream of characters as the system is booting, ending with the login prompt.
Login as user “qvidium” with the barcode serial number as the password,then hit
Enter
. From this
prompt, type
resetnetwork
followed by hitting the Enter key (<CR>, carriage return) to reset the
network settings to use DHCP. You can also type
ifconfig eth0
(and <CR>) to see the current IP
address.
Typing “clean<CR>” will reset all of the device settings to their factory defaults.
If you have experience with network monitoring software, such as Wireshark (www.wireshark.org),
please note that upon power-up, the Decoder will emit a gratuitous ARP packet from which you
can determine its IP address by looking for the ARP packets that the QVDEC4K generates and
analyzing its contents.
1.4 Ping and Traceroute
Selecting Ping allows you to test network connectivity by sending ping packets to an address or
hostname you specify. However, to use a hostname in place of an IP address, you must have
configured at least one DNS server.
The following figures show the Ping configuration page and a typical Ping output: