I bumped into the following a11y error, when I am using <video>:
A11y: <video> elements must have a <track kind="captions">
But the video I have there doesn't have any audio. I am using that as a gif alternative, as it is much smaller in size. As the <track> is used for describing the audio, how should I handle this warning?
You can ignore the error. Make sure there's a description of the video for the visually impaired, however.
That's what the W3 does in one of its "passed" examples:
This video element, which has no audio, has a text transcript available on the same page. Thus, it passes rule Video Element Visual-Only Content Has Transcript.
<html lang="en"> <video controls> <source src="/test-assets/rabbit-video/silent.mp4" type="video/mp4"></source> <source src="/test-assets/rabbit-video/silent.webm" type="video/webm"></source> </video> <p>The above video shows a giant fat rabbit climbing out of a hole in the ground. He stretches, yawns, and then starts walking. Then he stops to scratch his bottom.</p> </html>