Hi Mike,
Yes, HTML5 is supported by WebView control, but some features are not included, such as AppCache, IndexedDB, programmatic access to the Clipboard, or geolocation.
For your question, the app throw a video.error.code 3, I think it is kinda of HTML5 error code, the description you could ref to
http://dev.w3.org/html5/spec-author-view/video.html#error-codes. I'm not quite sure if this is the issue with decoding stuff, if you could share me a sample that can reproduce your
issue for testing which would be nice.
You could also run the HTML page in your IE10 browser(document mode) to see if it works well.
--James
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Thanks
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