Streaming video quality testing allows you to monitor how streaming video is transferred in the network. Data streaming can be made manually and with scripts. Nemo Outdoorsupports PVI and PEVQ-S streaming video quality testing. A video preview can be seen during the measurement in Nemo Outdoor. ♦Note that it is only possible to make single video quality measurements.
Before starting video streaming quality measurements, select the video quality algorithm used, PEVQ-S or PVI, from the Device Configuration – Voice/Video quality page.
In order to be able to make streaming video quality measurements using PEVQ-S, you will need to install WinPCAP v. 4.1.3 and Flash Player on the computer and to define PEVQ-S settings in the PEVQ-S dialog. WinPCAP and Flash Player are available in the Nemo product package and Nemo User Club or you can download them from the product websites.
In order to be able to make streaming video quality measurements using PVI, you will need to install VLC 2.0.6 or newer on the computer, and to define streaming video settings in the Streaming Properties dialog. VLC is available in the Nemo product package and Nemo User Club or you can download it from the product website.
PVI video quality parameters are not available with 64-bit operating systems. PVI streaming without video quality parameters is supported with both 32- and 64-bit operating systems.
Making streaming video quality measurements with PEVQ-S:
1. Check that WinPCAP v. 4.1.3 and Flash Player are installed on the computer.
2. Select the PEVQ-S option from the Device Configuration – Voice/video quality page.
3. Define the PEVQ-S settings in the PEVQ-S Properties dialog.
4. Start recording by clicking the Start Recording button . From the Measurement menu, select All Devices | Start/Stop Data Transfer to start the data transfer with all test devices or <device name> | Start/Stop Data Transfer to start the data transfer with just one device.
5. You can view, for example, from a line graph some streaming parameters. Open a line graph (Data | Line Graph | New). Press the Add New Layer button and select Video Quality MOS in the Y field and click OK. The graph will now display the selected parameter.
6. From the Measurement menu, select Start/Stop Data Transfer to end the data transfer or wait until the entire video clip has been streamed.
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