Difficulty playing videos from WKWebView

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Created Sep ’21

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I am running into a weird bug where videos embedded in WKWebViews do not appear. I get audio, but the screen goes black. A few notes:

This happens on iOS 15 and the 15.1 beta, but not iOS 14.8.
I have three WKWebViews in the view hierarchy. If I reduce the number of WebViews to one, I do not encounter this issue. When I encounter this issue with one WebView, playing the same video from another WebView will work.
It seems to happen more often when in dark mode than in light mode.

This might be an Apple bug, but I have not been successful in building a standalone app that can reproduce this.I know this isn’t a lot to go on, but if anyone has pointers or can suggest something to try I would appreciate it.

Thanks.

John

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Answer 1

diffent OP

Oct ’21

strange, we are having the opposite problem, videos not playing in wkwebview on ios14.8 but working properly in ios15

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Answer 2

johnbrayton OP

Oct ’21

I tracked my issue down to CSS opacity values that were below 1.0 (but much higher than 0.0. I reported this as FB9652283. It sounds like the issue you are encountering is different, though.

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