The HTML5 space saw some interesting activity this week, with major players such as Nokia (News – Alert), Microsoft and Google dominating the headlines. Here’s a look at some of the top stories.

Kicking this off, digital media company Interlude introduced its Treehouse Authoring Suite, a self-service HTML5 app that lets users seamlessly design and publish their own interactive videos online for free. Features of the app include an intuitive interface, industry-standard tools and common workflows that make it both easy to use and highly flexible.

Next, Nokia is said to be expanding the Nokia Music store to both iOS and Android (News – Alert) by way of an HTML5 app. Of course, the app is already available natively for Windows Phone (News – Alert), but with its small market share, this is obviously quite restrictive for the service. With HTML5, however, Nokia can make itself available to the majority of mobile users with minimal cost and development time.

Microsoft (News – Alert), meanwhile, made HTML5 news by doing an impressively good job with the Xbox One’s Web browser. It appears the Xbox One’s version of Internet Explorer has a lot in common with its desktop brethren as it offers full support for HTML5 and CSS3, as well as features like inPrivate, tabbed browsing, cookie blocking and even Do Not Track functionality. The result is a browser that should provide desktop-like functionality as well as access to a variety of HTML5 apps.

On the flipside, Microsoft has started to hamper Internet Explorer for Windows 7 in an effort to force people into upgrading to Windows 8.1. The primary casualty has been HTML5 support by way of missing HTML5 Encrypted Media Extensions. This effectively cuts off IE11’s ability to play video and music with DRM enforced. Other missing elements include HTML5’s Media Source (News – Alert) Extensions and the UI Responsiveness tool.

Finally, Google has begun migrating YouTube to HTML5, dropping Flash and Silverlight streaming. Of course, the company has embraced its own VP9 compression standard to facilitate this rather than the more widely accepted HEVC encoding technology, but either way it’s a big step forward for HTML5.

That’s all for this week, but there’s plenty more HTML5 news to be found back on the HTML5 Report’s front page.