Qligent A/V Sync Detection Software to Make North American Debut at the 2018 NAB Show


A/V sync detection—part of the Qligent™ Vision cloud-based monitoring solution—flags lip sync errors down to a millisecond of accuracy throughout the distribution chain

Last Updated: March 5, 2018 9:33 am GMT
(Melbourne, Florida--March 5, 2018) With the repeated media processing that’s increasingly common in today’s multi-platform distribution, it’s easy for a program’s video and audio to get out of sync. Until recently, it hasn’t been easy to determine exactly where lip sync errors occurred and for how long—let alone identifying synchronization hiccups down to one millisecond.

At the 2018 NAB Show, taking place from April 9-12 at the Las Vegas Convention Center, Qligent will introduce A/V Sync Detection—a software solution designed to detect and flag A/V Sync (or lip sync) problems—to the North American broadcast market. As a leader in cloud-based, enterprise-level content monitoring and analysis, Qligent first unveiled A/V Sync Detection at IBC in September, where broadcasters and OTT service providers took notice of its low-latency, software-defined approach to addressing lip sync problems.

A/V Sync Detection—which Qligent will demo at booth N5914— is a standard feature within Match, a software module responsible for monitoring and detecting a wide range of programmatic errors out to the last mile of the multiplatform distribution domain. A/V Sync and Match are part of the Qligent™ Vision cloud-based monitoring solution, a broad toolset for monitoring and analyzing signal quality in today’s complex broadcast distribution environment.

“Armed with this frame-accurate analysis, broadcasters can determine the root cause of the problem and take steps to correct it,” said Ted Korte, Qligent’s COO, “Without it, broadcasters would be hard pressed to know where programmatic and lip sync errors are occurring in any and all downstream channels that carry their branded content to viewers.”

More importantly, Korte added, “A/V Sync Detection can flag variations in video and audio synchronization down to one millisecond of accuracy. This level of accuracy is especially critical for Web and OTT streaming where latency delays can easily occur along the stream path.”

Supported by Vision’s platform-wide trend analysis and cross-correlation engine, A/V Sync Detection remotely compares the audio and video of downstream media to its original “known good reference,” captured prior to distribution. To determine latency audio and video whether they are in sync, Vision field probes gather key data at various points along the distribution path. This can be deployed to include content origination, satellite up/downlinks, cable head-ends, IPTV, OTT and online streaming - all the way through to the last-mile delivery point.

“Any media processing step that’s done at any stage of content distribution—such as encoding, multiplexing, splicing, insertion or transcoding—can knock a program’s video and audio out of sync,” Korte said. “It’s especially challenging today because many third-party networks can carry and deliver a program to viewers, and no one entity controls the end-to-end chain anymore.”

When a problem is detected, A/V Sync Detection automatically notifies systems administrators and on-duty operators by sending texts, alarms, emails and more. It allows customization of alarm settings, and maintains a historical record with trends analysis over time.

By adding A/V Sync Detection to the Vision platform, Korte added, “We’re empowering broadcasters by giving them the means of determining where the A/V sync fell apart, even if it occurred on a third-party distribution platform, so they can alert the responsible parties and restore an optimal quality of experience (QoE) for their viewers.”

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About Qligent
Qligent architects complete monitoring, visualization and delivery analytics solutions for broadcasters, content distributors, ad agencies, regulators and network operators. Based in Melbourne, Florida, Qligent’s software-defined approach provides an open, vendor-agnostic platform to monitor performance, integrity and compliance of multiple signals, streams and systems across enterprises of any size. Its solutions provide the same consistent quality of content and service across multiple delivery platforms simultaneously.


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