HTML5 fallback images are being loaded by the browser, even though HTML5 video is supported

Question

I have some HTML5 videos with animated GIFs as fallback. Sadly, the GIFs are being loaded even though HTML5 video is supported.

Without using javascript, is

Answer 1

I assume you want a fallback for IE8 and earlier. Your solution is valid HTML, but I haven't seen anyone else recommend it. Other people use

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as a fallback instead of . Or maybe conditional comments would work. You could use except it wouldn't work for IE8 and earlier.