WRAL Searches Archives With Nexidia Dialogue Search Software

CBS affiliate WRAL is using Nexidia’s Dialogue Search software to locate and retrieve files stored on its centralized and recently digitized archive, which dates back to 1976 and holds more than 26,000 videotapes.

Nexidia’s Dialogue Search allows WRAL to search its entire Sony Optical Disc archive in seconds despite having little useful metadata to aid the search.

"We digitized our whole archive not only to ensure that those assets would be preserved, but also to complete our transition to an entirely tapeless workflow,” said Peter Sockett, director of engineering and operations at WRAL and its sister stations WRAZ and WILM. “The problem is, many of those assets lack sufficient metadata to enable an effective search, and without it, individual clips or even entire assets would be so hard to find that they might as well be lost forever. Nexidia Dialogue Search gives us back our archive. It's as simple as that. Now we'll actually be able to repurpose those assets easily."

The innovative software is currently in use at CNN, Crawford Media, The LDS Church, Cox Media, PBS, Turner Networks, and Our Daily Bread Ministries. Across those customers, Nexidia Dialogue Search has been integrated with the Avid Interplay Production, Vizrt VizOne, Dalet Galaxy, IPV Curator and CatDV media asset management (MAM) solutions.

Nexidia’s Dialogue Search enables content producers, owners, and consumers to type any combination of words or phrases, and in only seconds, find and preview any media clip where those words or phrases are spoken—independent of any captions, transcript, or metadata.

In combination with Dialogue Search’s built-in metadata filtering and search capabilities, users can further explore and refine the result set, diving deeper in to their media in order to find assets that would have otherwise gone undiscovered.

The software is used to scan all of the audio in a media library almost instantaneously—50x real time per CPU core—and creates an index of the elementary sounds of speech, called phonemes. This reliance on phonemes, not individual words, gives WRAL unprecedented accuracy in its search results. It works across a wide variety of speakers with varied accents, and the probabilistic nature of the search algorithm means results can be found even in the presence of background noise.

Once found, results can be quickly previewed in a media player without having to scroll through numerous clips just to find a specific sound bite. Each time coded result displays a confidence score, enabling users to focus only on the closest matches, or to broaden their review to include subtle variations on the search term.

Sony Professional Services introduced WRAL to Nexidia through an alliance between Nexidia and Sony. WRAL will be using Dialogue Search in conjunction with its Sony Optical Disc Archive installation. 

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