When it comes to video playback on Windows Phone, especially YouTube, things can get a little complicated. We won’t rehash the whole Google-Microsoft tiff over an official app again, but what we can share with you is some details about how Microsoft worked really hard on Windows Phone 8.1’s HTML5 video capability.

We recently spoke with a Microsoft Program Manager who worked on the IE 11 HTML5 audio/video features, including all the details of the modifications. They’re quite significant, and we’re confident that once you learn about them, you’ll be even more excited to pick up the 8.1 bits in the coming weeks.