What does this mean?

All pre-recorded audio and video should provide appropriate captions. This allows people who are deaf or hard of hearing to use the media.

Captions should provide the part of the content available via the audio track. Captions not only include dialogue, but identify who is speaking and include non-speech information conveyed through sound, including meaningful sound effects.

See Understanding WCAG Success Criterion 1.2.2.

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How close this website is to fixing this issue.

HTML Found on page Issues
<video id="video-embed-1334" controls loop controlslist="nodownload">...</video> 1
1 distinct issue was found in the sample of 125 web pages.
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