Audio-to-Video Delay—Watermarking Provides a Means of Automatic Correction

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Synchronization of audio and video has been a problem for many years. Separation of audio and video processing and inherent delays within the video path create an advance on the audio, which is unacceptable to the human brain. Techniques for correcting this have included insertion of a fixed delay in the audio path, often set to ensure that the audio is always late with respect to the video. An alternative is provision of automatic audio delay correction around individual video processing components such as video synchronizers. Sometimes the variable delay is added to a fixed delay to enable correction of multiple elements in a production path. This paper describes a means of using digital video watermarking to measure audio-to-video delay. A system is proposed that provides automatic correction from program source to final program output.
Publication Date: 2001-08-01
DOI: 10.5594/J17763
Link: https://doi.org/10.5594/J17763
Author(s): Tom Tucker

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Tom Tucker; Audio-to-Video Delay—Watermarking Provides a Means of Automatic Correction, SMPTE Journal ( Volume: 110, Issue: 8, August 2001); SMPTE, 2001. Available at https://doi.org/10.5594/J17763

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Tom Tucker; Audio-to-Video Delay—Watermarking Provides a Means of Automatic Correction, SMPTE Journal ( Volume: 110, Issue: 8, August 2001); SMPTE, 2001. Available at https://doi.org/10.5594/J17763

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Tom Tucker; Audio-to-Video Delay—Watermarking Provides a Means of Automatic Correction, SMPTE Journal ( Volume: 110, Issue: 8, August 2001); SMPTE, 2001. Available at https://doi.org/10.5594/J17763

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<span class="citation">Tom Tucker; <cite>Audio-to-Video Delay—Watermarking Provides a Means of Automatic Correction</cite>, SMPTE Journal ( Volume: 110, Issue: 8, August 2001); SMPTE, 2001. Available at <a href="https://doi.org/10.5594/J17763" target="_blank" rel="noopener">https://doi.org/10.5594/J17763</a></span>

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Tom Tucker; Audio-to-Video Delay—Watermarking Provides a Means of Automatic Correction, SMPTE Journal ( Volume: 110, Issue: 8, August 2001); SMPTE, 2001
doi: 10.5594/J17763
url: https://doi.org/10.5594/J17763

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<li>
Tom Tucker; <cite id="bib-10-5594-j17763">Audio-to-Video Delay—Watermarking Provides a Means of Automatic Correction</cite>, SMPTE Journal ( Volume: 110, Issue: 8, August 2001); SMPTE, 2001
<span class="doi">10.5594/J17763</span>
</li>