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Nexidia, Wohler Partner on Closed Captioning Tool

The solution inserts, manages and oversees the quality control of closed captions and subtitles

Nexidia, a producer of audio and video search tools, and Wohler Technologies, a manufacturer of in-rack audio and video monitoring solutions for the professional audiovisual markets, have partnered on a solution that inserts, manages and oversees the quality control of closed captions and subtitles, all in the file domain.
The solution combines Nexidia’s “QC” tool for automated caption, video description and language verification with Wohler’s “RadiantGrid” advanced media transformation and automation platform. The system enables broadcasters to validate captions and automatically check quality after transcoding, within one workflow, faster than real time, the companies say.
“Our partnership with Nexidia means that for the first time broadcasters can extract or insert caption data and validate legal compliance rapidly and efficiently all in one file-based system instead of having to rely on separate workflows,” says Kirk Marple, Wohler’s chief software architect for RadiantGrid. Nexidia and RadiantGrid “together allow users to process massive amounts of caption and subtitle data automatically for all forms of file-based content, helping to ensure higher quality while avoiding fines,” he says.
The RadiantGrid solution extracts closed captioning from media sources and inserts the data back into the transcoded output file, Wohler says. The system handles the insertion of separate closed captioning or other aligned caption data files into the vertical ancillary data space or vertical blanking interval space, or produces new ancillary outgoing files such as SMPTE-TT or SAMI, the company says. Caption insertion and conversion can be done with or without transcoding of the video essence when using compatible video containers, according to the firm.
At that point, Nexidia QC advances the process by automatically verifying quality to ensure that the correct caption file appears against the correct media in the correct language, and that it is properly timed, all to ensure compliance. Nexidia QC can also repair misaligned caption files by comparing and adjusting the time codes of the words spoken in the audio track and the time codes in the caption file.
“Nexidia QC overcomes the challenge of ensuring content is being created, edited, and distributed in the right languages with the correct captions at the right times,” says Drew Lanham, senior vice president and general manager of Nexidia’s Media and Entertainment division. “Wohler’s automated captioning technology is a perfect complement to Nexidia QC because both automate manual processes, thus reducing operating expenses and avoiding errors that can lead to fines and viewer dissatisfaction,” he says.
For more information, click here on either Nexidia or Wohler Technologies.