Test- and measurement-systems-supplier Tektronix has developed a way to correct audio-to-video delays (also known as "lip-sync errors") in digital video.
The system, called the AVDC100, applies a digital "watermark" of the audio content to the video signal near the point of audio/video content creation. Then, as it analyzes the watermark in the distribution chain, it measures the audio/video delay error and automatically corrects it by adjusting the audio delay.
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