DOMException in google PageSpeed Insights

[sarammog]

Sorry, this is a follow on from a previous enquiry about DOMException in google PageSpeed Insights… I missed the notification of a reply and it’s now been closed.

PageSpeed Insights - DOMException: Failed to load because no supported source was found

Hi When I use a video as the background to a section. I create the video with no audio to make sure it autoplays okay but get a resulting error in PageSpeed Insights “DOMException: Failed to load because no supported source was found”. I’m led to believe it is to do with Insights expecting to find an audio component to the video. Is there a way to tell PageSpeed that there shouldn’t be audio? Not a big thing but I find losing those 4 points on my Best Practices score surprisingly annoying!

From my checks, i have ascertained:

• I deactivated all the plugins on the site and the browser error still exists.
• The error only exists on the page with has a video on it.
• It affects all my sites that have video backgrounds on them.
• I currently have two sections on the page, one which has the video for desktop breakpoints and a second which has no video for mobile breakpoints. The error is present on both mobile and desktop.
• When I remove the video from the page, the error goes.

Any ideas?

[charlie]

I was able to hide one of the errors and we’ll probably release a fix for that. However I think the other one is being handled by the WordPress video library and I’m not sure we’ll be able to get it removed. What I would also try is exporting your video file to a format other then mp4 that an older mobile browser could use. I think pagespeed insights uses an older mobile browser and that’s why this error happens at all. Have a great day.