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Tektronix tool analyses streaming video over IP

Posted: 03 Feb 2006     Print Version  Bookmark and Share

Keywords:Spectra2|VQM  video quality measurement  video over IP  QoS  quality-of-service 

Tektronix Inc. has announced the availability of the Spectra2|VQM (video quality measurement) monitoring solution for the diagnosis and analysis of streaming video transmitted over IP. This product aims to help users identify the causes of poor digital image quality, such as packet loss, delay or data corruption in the IP transport network. According to the company, the Spectra2|VQM is the first portable monitoring solution with support for multiple-level quality-of-service (QoS) scores and video industry standard, non-proprietary forward error correction (FEC) analysis that carriers and cable networks can use in the emerging video over IP opportunity.

The Spectra2|VQM is a Windows-based software package that is part of Tektronix's Internet Protocol diagnostics (IPD) product portfolio. The IPD portfolio provides network equipment manufacturers and service providers test and measurement tools for the analysis and QoS measurement of media over IP and protocols in the core of converged multi-service networks.

The product monitors video streams transported over RTP and MPEG2-TS (transport stream) protocols. It supports measurement of multiple concurrent standard-definition video streams and HD video streams. Users can generate real-time video streaming quality metrics such as presence, accuracy and mean opinion scores (MOS) that can be used to diagnose a range of video-related problems at the IP, transport and content levels. The availability of MOS QoS measurements based on transport and actual uncompressed video content allows users to correlate QoS at both the transport and content levels, Tektronix explained.

Richard Kenedi, senior director of Tektronix's diagnostics, communications business, said that with the Spectra2|VQM, network operators can verify that subscribers are receiving what they request, when they requested it and at acceptable quality, by continuously monitoring video transport and content on user-selectable channels.

"Equipment manufacturers and service providers want to ensure the highest quality digital video transmission for their customers," Kenedi said. "They know that the provider who most consistently meets customer quality standards will inevitably win the most loyal customers in the market for IPTV content. Spectra2|VQM has all the advantages of Spectra2, including ease of use as well as Tektronix' expertise in the IP testing space."

Spectra2|VQM supports both CoP-R3 and RFC 2733, the two main non-proprietary, video industry FEC analysis standards. It is capable of analysing FEC algorithms, a technique for improving the reliability of packet transmission over networks which do not provide guaranteed packet delivery. The company explained that this technique allows the user to view the effectiveness of the correction mechanism. The software can detect codec over-compression and incorrectly configured FEC for fine-tuning bandwidth versus quality. Users can detect perceived video image quality in real time or historically for individual video streams so that they can develop systems and services that match the visual quality that viewers have come to expect from traditional TV broadcasts.




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