[imgabe]

> Warning: the following video contains rapid strobing of light. I’ve written this out so people who are reading this with a screen reader know not to watch the video!

Uh...if you need a screen reader are the strobing lights really going to be a problem?

[fwipsy]

Some people have very blurry vision, so they might be using a screen reader but still watching videos. Some people might translate the page to another language, which wouldn't apply to the warning embedded in the video. Probably there are other edge cases.