![]() ![]() Media providers also need some mechanism to assess the user's perceived playback quality to alter the quality of content transmitted using adaptive streaming. Will the playback be smooth and power efficient? Can the display render HDR and wide color gamut content? The Media Capabilities specification defines an API to expose that information, with a view to replacing the more basic and vague isTypeSupported() and canPlayType() functions defined in HTML. need to know whether the user's device can decode a particular codec at a given resolution, bitrate and framerate. To improve the user experience and take advantage of advanced device capabilities when they are available, media providers e.g. Mobile devices have widely heterogeneous decoding (and encoding) capabilities. ![]() The Canvas 2D Context API enables modifying images, which in turn opens up the possibility of video editing, thus bringing multimedia manipulation capabilities to the Web platform. Direct manipulation of streams from camera and microphones is possible through the Media Capture and Streams API. While the new HTML5 tags allow to play multimedia content, the HTML Media Capture defines a markup-based mechanism to access captured multimedia content using attached camera and microphones, a very common feature on mobile devices. The playback content can be streamed, augmented and completed via Media Source Extensions that lets developers buffer and generate media content in JavaScript, thus allowing Web application developers to create libraries that can handle adaptive streaming formats and protocols.įor the distribution of media whose content needs specific protection from copy, Encrypted Media Extensions (EME) enables Web applications to render encrypted media streams based on Content Decryption Modules (CDM). ![]() They make multimedia content first-class citizens of the Web, the same way images have been for the past 20 years. Respectively, these tags allow embedding video and audio content, and make it possible for Web developers to interact much more freely with that content than they would through plug-ins. HTML5 adds two tags that dramatically improve the integration of multimedia content on the Web: the and tags. ![]()
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