Chapter 12 IP Video Testing
Analyzing video streams
SmartClass TPS User’s Guide
98 22035456, Rev 001 June 2014
Analyzing video streams
The SmartClass Triple Play Services analyzes the video data packet flow at the packet level. Since
the initial video quality is established by the source material and encoding process at the head end,
and the decoding quality is established by the STB, the effects of the transport and access networks
on the video streams are the variables requiring analysis. Actual video content decoding is not
performed.
After the SmartClass Triple Play Services is setup, it can analyze video performance. Up to three
streams can be simultaneously analyzed in Terminate mode. In monitor mode, up to 3 simultaneous
streams can be analyzed at one time, with statistics available for up to 10 previous streams. To view
statistics on another stream, use the up or down arrow keys.
Terminate mode
In the terminate mode, you can emulate a set-top-box and request broadcast programs.
To run IP video tests in Terminate mode
1 Verify that the network connection is established.
2 From the IP Video menu, select Stream 1 Results (or your desired stream number).
3 Select Start Stream to request the program material.
This initiates the IGMP signaling protocol sequence. The state of the IGMP messaging is
shown on the screen. Typically, the status will change from Idle to Media Wait to Stream
Up.
4 To view additional results, do one of the following:
– Press the right arrow.
–Press the Cancel key, and then select either Stream Results (to view results per stream) or
Video Results (to view total video results).
5 To save a test report, press the utility (i) key and then select Save Report, and then specify
the report settings such as report name, report format, technician ID, location, and other
settings as needed.
6 To clear (or reset) the results, use the * key.
This will either Clear Stream if you are on a Stream Results menu or Clear Stats if you are on
the Total Video Results menu.
See “Video results” on page 132 to learn what your results mean.
Monitor mode
In the monitor mode, up to 3 simultaneous streams can be analyzed at one time, with statistics
available for up to 10 previous streams.
NOTE:
The data connection must be established for video streams to be visible to the SmartClassTriple
Play Services and the video statistics screens to show activity.
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